Leaderboard

Yes definitely, otherwise you will not have the correct end shake, and the jewel will not retain the oil in the centre. There is a concave and convex side, the pivot rests against the concave side. Magnification will help you determine which side is which. Once you get used to it, it is very easy to see, the reflection of the light in the jewel is different for each side.

Hello All; I received an Omega 18SPB gold-plated pocket watch, allegedly a non-runner. It was a heirloom item and had to be passed on to the younger generation. Luckily it wasn't a total "non-runner"; after a full wound it ran for 7 hrs. The small seconds-hand was missing and there were visible signs of dirt inside the case & movement. According to bidfun-db ( http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2ustu&1095006620), it is a "Gents Omega Hunter", from the 1924 era and the 18SPB movement has 15-jewels, a bi-metallic screw balance with a Breguet hairspring. Here are some pictures of the watch in the condition I received it; Front cover and dial; Notice the dirt on dial and on the inside of the bottom edge glass ... Rear covers and movement; The 18SPB movement seems pretty straight forwards and judging the case marks / movement-screws-heads; not very often "messed" with. The case numbers did match-up and the gold-plating wear on the case & the chain seem to match up as well. Also the tapered chain seems the original & authentic one; a great bonus ! Before removing the winding stem, remove the residual power in the main-spring; in this case there wasn't any residual power left (?). To pull the winding stem, the set lever screw has to be undone by 1-1/2 to 2 turns; After removing the winding stem, there are two case-screws which have to be taken out. It's a "front loader", the movement is placed inside the casing through the front. Flipped the case over and carefully remove the glass & bezel ...... both the glass and bezel are of very thin material ...... Carefully remove the movement. There is a thin ring around the movement, between the bottom of the movement and the watch case; not shown in the picture. The hands are a straight pull up. The dial is attached to the movement by three (3x) dial-screws, each with a roughly 120 degrees spacing in between; Stripping the keyless works, minute and hour wheel revealed some excessive lubrication; Note; the winding pinion didn't come out at this stage. Pulled the canon-pinion but left both keyless-springs (left and right) in place. Keep an close eye on the minute pinion, which protrude above the main-plate !! Flipped the movement over and removed the balance. Thereafter removed the pallet-bridge, the pallet and the wheel bridge. Note that the crown wheel screw is left-handed, but hasn't got the triple markings some left-hand screws have; Removed ratchet wheel and the crown wheel, also note there is an additional washer underneath the crown wheel; Removed the wheel train, barrel-bridge, spring-barrel, winding pinion and the set lever screw. All items collected in a tray; Opened up the main-spring barrel; Took the old spring out and I have to say that the old spring wasn't eager to get its freedom back ! Before I started on the watch, I asked under the "Watch repairs Help & Advice" the forum for some help. A very educative discussion followed; Luckily I received some excellent help from JohnR725 and StuartBaker104. Both noticed that a wrong main-spring was fitted. The spring fitted had a "normal-bridle", whereas the barrel needed a "DBH" special bridle. This meant that the old spring was not a good reference for a new spring With the help of both forum members above, and the "Spring calculator" on David Boettchers website; http://www.vintagewatchstraps.com/mainsprings.php, we were able to guesstimate which spring was needed. The internal barrel diameter was 14.4mm. Feeding this number in the "Reverse engineering calculator" yielded the follow answer: Spring thickness = 0.177, length = 450, turns = 6.4, area = 55%. From measuring the barrel, the maximum allowable height of the spring was 1.9mm. Scrolling through CousinsUK list for 1.9mm high DBH springs, the closed match was spring GR5617DBH which dimensions were 1.9x0.18x440x14.5 (Height x thickness x length x washer ID). That was the spring which was ordered, pictured below; Even though the spring fitted from the washer inside the barrel, I couldn't engage the hook, so the spring had to be unwound. Note the difference in the amount of "un-cloiling" between the old tired spring and the eager spring. No wonder there was no residual power in the old spring left after 7 hrs running ! Fitted the new spring and it was a perfect fit While this all with the spring was going on, StuartBaker104 made me aware of an eBay auction for a lot of small fusee seconds-hands. The auction ended late in the evening and I throw in a bid, never thought to win it. Lo and behold, I did win !! Whether they fitted had to be seen, but judging the sellers pictures, they had to be close. Thanks again for the tip Stuart ! While the hands were on their way, I thoroughly cleaned and de-magnatized the movement parts. To be continued in part II since I nearly lost all my work above; about 2 hrs of work !! This program doesn't allow intermediate saving, which isn't so good ! @Mark: can that be changed ?

I cleaned this watch today 12/18/2017. Elgin 0 size 7 jewel manufactured in 1904, run quantity 2000. What fabulous craftsmen we had before us, truly amazing. Had to solder hunting case front lid back on at the hinge. Remove metal spring for the lid prior to laser soldering. Watch was in good condition and case is absolutely beautiful. Overhaul, new white alloy mainspring, hunting case glass crystal, solder front lid back to case and new bow installed and properly tightened to take out the flop Check out the 7 jewel on the timegrapher.

Came across this screw thread chart, I couldn't find a link to it doing a forum search and thought it may be of some use when dealing with unknown threads- it lists quite a few different watch threads you just need to pick through the list to find them. It also lists a lot of what I would call oddball threads, the type that you might come across once every 10 yrs. http://pages.cs.wisc.edu/~bolo/workshop/thread.html

Friends and family have taken an interest in some of the watches I've serviced and since they've only known Quartz pieces I thought I'd fix something up for them for the holidays. So I purchased a couple of Seiko divers a few weeks back off of eBay with the intent of getting them back into spec. One came from the Philippines and the other India and both were in a bad way based on the sellers' images. The first (from the Philippines) turned out to be a pretty good deal as it the entire movement and case was salvageable. It was nothing special to look at the start, that's for sure, but it will spiff up pretty nice in the end. Unfortunately, the picture here (in the condition it arrived) hides the fact that one of the dial feet has gone missing. The correct solution to this problem is to solder the foot back in place but me being a fool with a soldering iron I opted for a strong two part epoxy instead. The dial may or may not be original but it's in fair shape and needs only to have the luminous paint removed and reapplied (I've not done this before so we'll see how it goes). The hands will be polished and replated as they are a real mess. The movement is in excellent shape and has sprung back to life with a proper cleaning. The only part of that endeavor which was out of the norm was the removal of "dial glue" from the movement with a bit of acetone. I'm currently just awaiting the replacement bezel insert and a new 2.25mm watch crystal to finish this up. Unfortunately the watch from India- well that was a whole 'other story! It was clear right off the bat that there was an issue with the dial as it sits crooked in the case. I thought this was the result of another missing dial foot but it was much worse than that- both feet are missing although it may not have mattered because the wrong movement was in the case as well. The diver should have a 7002 (17 Jewel Automatic with Date) movement but instead has a 7019 (21 Jewel, Automatic, Day-Date) fitted. Close examination revealed a bit of (ahem) over-oiling? Just when you think you've seen the worst case of excess lubrication in a watch movement a new case comes along. I'm still only about halfway through this repair so I'll follow-up with some images as they come. With the dial feet lost and the dial bathed in thick oil, I considered it a lost cause and proceeded unafraid with a cleansing using isopropyl alcohol- it actually cleaned up fairly nice but will need quite a bit of work to be considered "good enough" for daily use. Some foolish person apparently tried to remove the lime using car keys or some such tool and scratched the dial terribly. (sigh) I've since finished servicing the 7019 movement although the mainspring had failed and I'm not certainly I'll bother with a replacement as the movement will probably just be flipped to offset the cost of the proper 7002 movement. More to come soon...

Hi Colditz Welcome to the forum. To be honest I'd personally hold back from having a crack at this one as an first go at watch repair. Plenty of cheaper stuff available to practice on first. Your background on working on small will probably help you greatly so don't be put off, just maybe build up to it. As far as parts, there's a list of suppliers on this site that Marc kindly put together. Must have web site's which should help you in deciding which to use. Good luck and keep us updated with your progress. NAD Sent from my Moto G (4) using Tapatalk

Part II: Assembly and the end result. After cleaning all the jewels, I wasn't able to undo the balance cap-stones. Lubrication was therefor difficult and not optimal. Before placing the barrel bridge, next to the spring barrel, remember to lubricate & place the winding-pinion and the set lever screw; Assembling is the reverse of disassembling; Barrel-bridge, click and crown-wheel lubricated & installed ; The wheel train; Train bridge, pallet fork & bridge Keyless works and winding stem; Installed the balance wheel and ........... a healthy "tick" !! Did some initial checks on the time-grapher and all looked good enough to go ahead and to install the dial and hands. The tubing of the one of the eBay small seconds hand had to be squeezed / pinched with a pin-vice. Luckily I managed to get a nice fit and the hand doesn't look "off" Cleaned the case. It was decided to leave the gold-plating wear of the case and chain as is; the watch was allowed to show its age & previous usage in all its glory To conclude; here are some of the time-graphs. I later adjusted the daily-rate a bit. As for the Beat Error; I decided to leave it as is, too little and not worth the risk. Besides, the watch won't be worn daily, but more to be worn on special occasions. The bench-test showed that the watch ran indeed as accurate as the graphs suggest ....... Dial Down; Dial Up; For some unknown reasons the CU & CD parameters weren't copied to the USB stick, but the amplitude & BE were about the same as dial up & dial down; around 300+ degrees and 2m/s. Crown Up; Crown Down; to me; not too scabby for a nearly 100 years old movement ! I hope the next owner will enjoy & proudly wear this nice watch. For sure, it was for me a privilege to work on it. Thank you Solveig for giving me this opportunity ! Hope that you will enjoy this walk through and that it is of some use to somebody, someday; Roland.

A Compilation of Thread Size Information Key Abbreviation Thread Name ADM Admiralty. ASME ASME Thread. BA British Association Brass Brass thread. BSF British Standard Fine. BSP British Standard Pipe Thread. BUTTON Watch button threads CEI Cycle Engineers Institute. COND Steel conduit thread (DIN 40430) CROWN Watch crown threads. Elgin Elgin watch screw threads GAS Gas (Brass Pipe) Thread HOLTZ Holtzapfels Threads. LOEW Loewenhertz Threads. L Left hand thread M ISO Metric. PEND Watch Pendant Thread. PROG Progress Thread. SPARK Spark Plug Threads. THURY Swiss Screw Thread. UNF/UNC Unified national Fine/Coarse. WALTH Waltham Thread Whit Whitworth. W.INS Whitworth Instrument. W.Pipe Whitworth Pipe Thread Thread Size Table Size Thread Dia/ Dia/ Pitch/ Pitch/ Core Core Depth/ Depth/ Designation Name Inch mm TPI mm Dia/" Dia/mm Inch mm 10 W.INS 0.01 0.254 400 0.064 0.0068 0.173 0.0016 0.041 25 THURY 0.01 0.254 353.8 0.072 11 W.INS 0.011 0.279 400 0.064 0.0078 0.198 0.0016 0.041 24 THURY 0.0114 0.289 318.3 0.080 12 W.INS 0.012 0.305 350 0.073 0.0083 0.212 0.0018 0.046 23 THURY 0.0129 0.328 286.7 0.089 23 BA 0.013 0.33 282.2 0.090 0.0087 0.22 0.0022 0.055 13 W.INS 0.013 0.33 350 0.073 0.0093 0.237 0.0018 0.046 Elgin 0.0132 0.33 360 0.071 0.0112 0.28 23 WALTH 0.0138 0.35 254 0.100 0.0107 0.27 0.0016 0.04 14 W.INS 0.014 0.356 300 0.085 0.0097 0.247 0.0021 0.054 22 BA 0.0146 0.37 259.2 0.098 0.0098 0.25 0.0024 0.06 22 THURY 0.0146 0.372 257.9 0.099 Elgin 0.0148 0.37 320 0.079 0.012 0.28 0.0014 0.03556 15 WINS 0.015 0.381 300 0.085 0.0107 0.273 0.0021 0.054 4 PROG 0.0157 0.4 254 0.100 0.0094 0.24 0.0031 0.08 16 W.INS 0.016 0.406 300 0.085 0.0117 0.298 0.0021 0.054 21 BA 0.0165 0.42 230.9 0.110 0.0114 0.29 0.0026 0.065 21 THURY 0.0168 0.426 233 0.109 Elgin 0.0168 0.42 260 0.098 0.0132 0.33 0.0018 0.04572 17 W.INS 0.017 0.432 250 0.102 0.0119 0.302 0.0026 0.065 21 WALTH 0.0177 0.45 240 0.106 0.0134 0.34 0.0022 0.055 4 1/2 PROG 0.0177 0.45 254 0.100 0.0114 0.29 0.0031 0.08 18 W.INS 0.018 0.457 250 0.102 0.0129 0.327 0.0026 0.065 20 THURY 0.0189 0.479 208.2 0.122 20 BA 0.0189 0.48 211.7 0.120 0.0134 0.34 0.0028 0.07 19 W.INS 0.019 0.483 250 0.102 0.0139 0.353 0.0026 0.065 5 PROG 0.0197 0.5 203.2 0.125 0.0118 0.3 0.0039 0.1 20 W.INS 0.02 0.508 210 0.121 0.0139 0.353 0.003 0.077 Elgin 0.0208 0.52 220 0.115 0.0168 0.42 0.0020 0.0508 19 BA 0.0213 0.54 181.4 0.140 0.0146 0.37 0.0033 0.085 19 THURY 0.0214 0.543 188.1 0.135 19 WALTH 0.0217 0.55 220 0.115 0.0177 0.45 0.002 0.05 5 1/2 PROG 0.0217 0.55 203.2 0.125 0.0138 0.35 0.0039 0.1 22 W.INS 0.022 0.559 210 0.121 0.0159 0.404 0.003 0.077 Elgin 0.0228 0.57 260 0.098 0.0188 0.47 0.0020 0.0508 6 PROG 0.0236 0.6 169.3 0.150 0.0142 0.36 0.0047 0.12 24 W.INS 0.024 0.61 210 0.121 0.0179 0.455 0.003 0.077 18 THURY 0.0243 0.616 169.3 0.150 18 BA 0.0244 0.62 169.3 0.150 0.0173 0.44 0.0035 0.09 Elgin 0.0248 0.62 220 0.115 0.02 0.5 0.0024 0.06096 17 WALTH 0.0256 0.65 200 0.127 0.0213 0.54 0.0022 0.055 6 1/2 PROG 0.0256 0.65 169.3 0.150 0.0161 0.41 0.0047 0.12 26 W.INS 0.026 0.66 180 0.141 0.0189 0.48 0.0036 0.09 Elgin 0.0268 0.67 180 0.141 0.022 0.55 0.0024 0.06096 17 THURY 0.0275 0.699 152.1 0.167 17 BA 0.0276 0.7 149.4 0.170 0.0197 0.5 0.0039 0.1 7 PROG 0.0276 0.7 145.1 0.175 0.0165 0.42 0.0055 0.14 28 W.INS 0.028 0.711 180 0.141 0.0209 0.531 0.0036 0.09 Elgin 0.0288 0.72 220 0.115 0.0248 0.62 0.0020 0.0508 7 1/2 PROG 0.0295 0.75 145.1 0.175 0.0185 0.47 0.0055 0.14 30 W.INS 0.03 0.762 180 0.141 0.0229 0.581 0.0036 0.09 12 Swiss BUTTON 0.03 0.76 140 0.181 Elgin 0.0308 0.77 180 0.141 0.0248 0.62 0.0030 0.0762 Elgin 0.0308 0.77 220 0.115 0.0268 0.67 0.0020 0.0508 16 BA 0.0311 0.79 133.7 0.190 0.022 0.56 0.0045 0.115 16 THURY 0.0313 0.794 137.3 0.185 8 PROG 0.0315 0.8 127 0.200 0.0189 0.48 0.0063 0.16 32 W.INS 0.032 0.813 180 0.141 0.0249 0.632 0.0036 0.09 15 WALTH 0.0327 0.83 180 0.141 0.028 0.71 0.0024 0.06 11 Swiss BUTTON 0.033 0.84 140 0.181 8 1/2 PROG 0.0335 0.85 127 0.200 0.0209 0.53 0.0063 0.16 34 W.INS 0.034 0.864 150 0.169 0.0255 0.647 0.0043 0.108 10A Swiss BUTTON 0.034 0.86 110 0.231 10 Swiss BUTTON 0.035 0.89 110 0.231 15 BA 0.0354 0.9 121 0.210 0.0256 0.65 0.0049 0.125 9 PROG 0.0354 0.9 112.9 0.225 0.0213 0.54 0.0071 0.18 15 THURY 0.0355 0.901 123.3 0.206 10 US BUTTON 0.036 0.9 113 0.225 10B BUTTON 0.036 0.91 110 0.231 36 W.INS 0.036 0.914 150 0.169 0.0275 0.698 0.0043 0.108 9 WALTH 0.0366 0.93 160 0.159 0.028 0.71 0.0043 0.11 Elgin 0.0368 0.92 140 0.181 0.028 0.7 0.0044 0.11176 Elgin 0.0368 0.92 220 0.115 0.0268 0.67 0.0050 0.127 9 1/2 PROG 0.0374 0.95 112.9 0.225 0.0232 0.59 0.0071 0.18 38 W.INS 0.038 0.965 120 0.212 0.0273 0.694 0.0053 0.135 9 Swiss BUTTON 0.039 0.99 110 0.231 1 LOEW 0.0394 1 101.6 0.250 0.0246 0.625 0.0074 0.188 10 PROG 0.0394 1 101.6 0.250 0.0236 0.6 0.0079 0.2 13 WALTH 0.0394 1 180 0.141 0.0335 0.85 0.003 0.075 14 BA 0.0394 1 110.4 0.230 0.0283 0.72 0.0055 0.14 7 WALTH 0.0394 1 140 0.181 0.0335 0.85 0.003 0.075 M1 Coarse 0.0394 1 101.6 0.250 0.0295 0.75 0.0049 0.12538 40 W.INS 0.04 1.016 120 0.212 0.0293 0.745 0.0053 0.135 Elgin 0.0408 1.02 120L 0.212 0.03 0.75 0.0054 0.13716 Elgin 0.0408 1.02 200 0.127 0.0348 0.87 0.0030 0.0762 9 Elgin BUTTON 0.041 1.03 120 0.212 Elgin 0.0428 1.07 120 0.212 0.0328 0.82 0.0050 0.127 8 BUTTON 0.043 1.09 100 0.254 11 PROG 0.0433 1.1 92.4 0.275 0.026 0.66 0.0087 0.22 5 WALTH 0.0433 1.1 120 0.212 0.0374 0.95 0.003 0.075 M1.1 Coarse 0.0433 1.1 101.6 0.250 0.0335 0.85 0.0049 0.12491 14 THURY 0.0434 1.102 110.9 0.229 Elgin 0.0448 1.12 110 0.231 0.034 0.85 0.0054 0.13716 45 W.INS 0.045 1.143 120 0.212 0.0343 0.872 0.0053 0.135 13 THURY 0.0457 1.16 100 0.254 Elgin 0.0468 1.17 110 0.231 0.0348 0.87 0.0060 0.1524 3, 6, & 7 BUTTON 0.047 1.19 110 0.231 1.2 LOEW 0.0472 1.2 101.6 0.250 0.0325 0.825 0.0074 0.188 12 PROG 0.0472 1.2 84.7 0.300 0.0283 0.72 0.0094 0.24 13 BA 0.0472 1.2 101.6 0.250 0.0354 0.9 0.0059 0.15 3 WALTH 0.0472 1.2 110 0.231 0.0402 1.02 0.0035 0.09 5/0 - 10/0 CROWN 0.048 1.2 110 0.231 0.038 0.95 0.0050 0.127 M1.2 Coarse 0.048 1.2 101.6 0.250 0.0374 0.95 0.0053 0.1346 Elgin 0.0488 1.22 140 0.181 0.04 1 0.0044 0.11176 Elgin 0.0488 1.22 200 0.127 0.0436 1.09 0.0026 0.06604 50 W.INS 0.05 1.27 100 0.254 0.0372 0.945 0.0064 0.163 Elgin 0.0508 1.27 110L 0.231 0.0388 0.97 0.0060 0.1524 4 BUTTON 0.051 1.29 84 0.302 12 BA 0.051 1.3 90.9 0.282 0.0375 0.953 0.0066 0.168 13 PROG 0.0512 1.3 78.2 0.325 0.0307 0.78 0.0102 0.26 12 THURY 0.052 1.32 90.1 0.282 11 WALTH 0.0528 1.34 170 0.149 0.048 1.22 0.0024 0.06 5 BUTTON 0.054 1.36 84 0.302 Elgin 0.0548 1.37 180 0.141 0.0488 1.22 55 W.INS 0.055 1.397 100 0.254 0.0422 1.072 0.0064 0.163 1.4 LOEW 0.0551 1.4 84.7 0.300 0.0374 0.95 0.0089 0.225 14 PROG 0.0551 1.4 72.6 0.350 0.0331 0.84 0.011 0.28 M1.4 Coarse 0.0551 1.4 84.7 0.300 0.0433 1.1 0.0059 0.14977 2 (pin lever) BUTTON 0.058 1.47 84 0.302 11 THURY 0.0587 1.49 80.9 0.314 11BA 0.059 1.5 82 0.314 0.0445 1.13 0.0073 0.185 1 WALTH 0.0591 1.5 110 0.231 0.052 1.32 0.0035 0.09 15 PROG 0.0591 1.5 67.7 0.375 0.0354 0.9 0.0118 0.3 0-80 ASME 0.06 1.524 80 0.318 0.0438 1.113 0.0081 0.206 2 (pocket) BUTTON 0.06 1.55 80 0.318 60 W.INS 0.06 1.524 100 0.254 0.0472 1.199 0.0064 0.163 Elgin 0.0608 1.52 110 0.231 0.0488 1.22 0.0060 0.1524 Elgin 0.0608 1.52 110L 0.231 0.0488 1.22 0.0060 0.1524 12 - 6 - 0 CROWN 0.061 1.53 80 0.318 0.048 1.2 0.0065 0.1651 16 PROG 0.063 1.6 55.6 0.457 0.0342 0.869 0.0144 0.366 M1.6 Coarse 0.063 1.6 72.6 0.350 0.0492 1.25 0.0069 0.1751 10 THURY 0.0646 1.64 72.8 0.349 65 W.INS 0.065 1.651 80 0.318 0.049 1.245 0.008 0.203 1.7 LOEW 0.0669 1.7 72.6 0.350 0.0463 1.175 0.0103 0.263 17 PROG 0.0669 1.7 52.3 0.486 0.0363 0.922 0.0153 0.389 10 BA 0.067 1.7 72.5 0.349 0.0503 1.278 0.0083 0.211 70 W.INS 0.07 1.778 80 0.318 0.054 1.372 0.008 0.203 Elgin 0.0708 1.77 180L 0.141 0.0648 1.62 0.0030 0.0762 18 PROG 0.0709 1.8 49.4 0.514 0.0385 0.978 0.0162 0.411 M1.8 Coarse 0.0709 1.8 72.6 0.350 0.0571 1.45 0.0069 0.17543 1 - 56 ASME 0.073 1.854 56 0.454 0.0498 1.265 0.0116 0.295 1 - 64 ASME 0.073 1.854 64 0.397 0.0527 1.339 0.0102 0.258 1 - 72 ASME 0.073 1.854 72 0.353 0.055 1.397 0.009 0.229 1 BUTTON 0.074 1.88 72 0.353 19 PROG 0.0748 1.9 46.8 0.543 0.0406 1.031 0.0171 0.434 75 W.INS 0.075 1.905 80 0.318 0.059 1.499 0.008 0.203 9 BA 0.075 1.9 64.9 0.387 0.0564 1.433 0.0092 0.234 9 THURY 0.0756 1.92 65.6 0.387 Elgin 0.0768 1.92 110L 0.231 0.0708 1.77 0.0030 0.0762 16 CROWN 0.077 1.93 72 0.353 0.063 1.58 0.0070 0.1778 Elgin 0.0772 1.93 80L 0.318 0.0612 1.53 0.0080 0.2032 2 LOEW 0.0787 2 63.5 0.400 0.0551 1.4 0.0118 0.3 20 PROG 0.0787 2 44.5 0.571 0.0428 1.086 0.018 0.457 M2 Coarse 0.0787 2 63.5 0.400 0.0630 1.6 0.0079 0.19949 80 W.INS 0.08 2.032 60 0.423 0.0587 1.49 0.0107 0.271 85 W.INS 0.085 2.159 60 0.423 0.0637 1.617 0.0107 0.271 8 THURY 0.0858 2.18 59.1 0.430 2 - 56 ASME 0.086 2.184 56 0.454 0.0628 1.595 0.0116 0.295 2 - 64 ASME 0.086 2.184 64 0.397 0.0657 1.669 0.0101 0.258 8 BA 0.087 2.2 59.2 0.430 0.0664 1.687 0.01 0.257 M2.2 Coarse 0.087 2.2 56.4 0.450 0.0689 1.75 0.0091 0.2299 0 BUTTON 0.89 2.26 60 0.423 Elgin 0.0892 2.23 80L 0.318 0.0712 1.78 0.0090 0.2286 90 W.INS 0.09 2.286 60 0.423 0.0687 1.744 0.0107 0.271 95 W.INS 0.09 2.286 50 0.508 0.0644 1.636 0.0128 0.325 2.3 LOEW 0.0906 2.3 63.5 0.400 0.0669 1.7 0.0118 0.3 18.0 CROWN 0.091 2.28 60 0.423 0.071 1.78 0.0100 0.254 7 THURY 0.0976 2.48 53.1 0.478 7 BA 0.098 2.5 52.9 0.478 0.0758 1.925 0.011 0.287 M2.5 Coarse 0.098 2.5 56.4 0.450 0.0807 2.05 0.0086 0.2196 3 - 48 ASME 0.099 2.515 48 0.529 0.0719 1.827 0.0135 0.344 3 - 56 ASME 0.099 2.515 56 0.454 0.0758 1.925 0.0116 0.295 100 W.INS 0.1 2.54 50 0.508 0.0744 1.89 0.0128 0.325 U HOLTZ 0.1 2.54 55 0.462 10/0 PEND 0.1016 2.58 90 0.282 0.0846 2.15 0.0085 0.215 2.6 LOEW 0.1024 2.6 56.4 0.450 0.0758 1.925 0.0133 0.338 6 BA 0.11 2.8 47.9 0.531 0.085 2.164 0.013 0.318 6 THURY 0.1106 2.81 47.8 0.531 4 - 32 ASME 0.112 2.845 32 0.794 0.0714 1.814 0.0203 0.516 4 - 36 ASME 0.112 2.845 36 0.706 0.0759 1.928 0.018 0.458 4 - 40 ASME 0.112 2.845 40 0.635 0.0795 2.02 0.0162 0.412 4 - 40 UNC 0.112 2.845 40 0.635 0.081 2.065 0.015 0.39 4 - 48 ASME 0.112 2.845 48 0.529 0.0849 2.157 0.0135 0.344 M3 Coarse 0.118 3 50.8 0.500 0.094 2.387 0.012 0.307 3 LOEW 0.1181 3 50.8 0.500 0.0886 2.25 0.0148 0.375 T HOLTZ 0.12 3.048 55 0.462 1/8 BRASS 0.125 3.175 26 0.977 0.0758 1.925 0.0246 0.625 1/8 CEI 0.125 3.175 40 0.635 0.0984 2.499 0.0133 0.338 1/8 WHIT 0.125 3.175 40 0.635 0.093 2.362 0.016 0.406 5 - 36 ASME 0.125 3.175 36 0.706 0.0889 2.258 0.018 0.458 5 - 40 ASME 0.125 3.175 40 0.635 0.0925 2.35 0.0162 0.412 5 - 44 ASME 0.125 3.175 44 0.577 0.0955 2.425 0.0148 0.375 5 THURY 0.1256 3.19 43.1 0.590 5/0 PEND 0.126 3.2 80 0.318 0.1122 2.85 0.0069 0.175 5 BA 0.126 3.2 43.1 0.590 0.098 2.489 0.014 0.353 3.5 LOEW 0.1378 3.5 42.3 0.600 0.1024 2.6 0.0177 0.45 6 - 32 ASME 0.138 3.505 32 0.794 0.0974 2.474 0.0203 0.516 6 - 32 UNC 0.138 3.5 32 0.794 0.1 2.532 0.019 0.487 6 - 36 ASME 0.138 3.505 36 0.706 0.1019 2.589 0.018 0.458 6 - 40 ASME 0.138 3.505 40 0.635 0.1055 2.68 0.0162 0.412 M3.5 Coarse 0.138 3.5 42.3 0.600 0.109 2.764 0.014 0.368 4 BA 0.142 3.6 38.5 0.656 0.111 2.807 0.016 0.396 4 THURY 0.1425 3.62 38.7 0.656 0.148 GAS 0.148 3.759 32 0.794 R HOLTZ 0.15 3.81 55 0.462 7 - 30 ASME 0.151 3.835 30 0.847 0.1077 2.736 0.0217 0.55 7 - 32 ASME 0.151 3.835 32 0.794 0.1104 2.804 0.0203 0.516 7 - 36 ASME 0.151 3.835 36 0.706 0.1149 2.919 0.018 0.458 0 PEND 0.1535 3.9 66 0.385 0.1358 3.45 0.0089 0.225 5/32 CEI 0.1563 3.97 32 0.794 0.1231 3.127 0.0166 0.422 M4 Coarse 0.157 4 36.3 0.700 0.124 3.141 0.019 0.492 4 LOEW 0.1575 4 36.3 0.700 0.1161 2.95 0.0207 0.525 3 BA 0.161 4.1 34.8 0.729 0.127 3.226 0.017 0.437 3 THURY 0.1618 4.11 34.8 0.729 Q HOLTZ 0.162 4.115 39.9 0.637 8 - 30 ASME 0.164 4.166 30 0.847 0.1207 3.066 0.0217 0.55 8 - 32 ASME 0.164 4.166 32 0.794 0.1234 3.134 0.0203 0.516 8 - 32 UNC 0.164 4.166 32 0.794 0.126 3.2 0.019 0.487 8 - 36 ASME 0.164 4.166 36 0.706 0.1279 3.249 0.018 0.458 8 - 40 ASME 0.164 4.166 40 0.635 0.1315 3.341 0.0162 0.412 12 - 6 PEND 0.1732 4.4 66 0.385 0.1555 3.95 0.0089 0.225 9 - 24 ASME 0.177 4.496 24 1.058 0.1229 3.121 0.0271 0.687 9 - 30 ASME 0.177 4.496 30 0.847 0.1337 3.396 0.0217 0.55 9 - 32 ASME 0.177 4.496 32 0.794 0.1364 3.465 0.0203 0.516 M4.5 Coarse 0.177 4.5 33.9 0.750 0.141 3.58 0.018 0.46 4.5 LOEW 0.1772 4.5 33.9 0.750 0.1329 3.375 0.0221 0.563 0 HOLTZ 0.18 4.572 36.1 0.704 2 THURY 0.1835 4.66 31.4 0.810 2 BA 0.185 4.7 31.4 0.810 0.147 3.729 0.019 0.485 S HOLTZ 0.185 4.699 55 0.462 3/16 CEI 0.1875 4.763 32 0.794 0.1543 3.919 0.0166 0.422 3/16 BSF 0.188 4.763 32 0.794 0.148 3.747 0.02 0.508 3/16 WHIT 0.188 4.763 24 1.058 0.134 3.406 0.027 0.678 10 - 24 ASME 0.19 4.826 24 1.058 0.1359 3.451 0.0271 0.687 10 - 24 UNC 0.19 4.826 24 1.058 0.139 3.528 0.026 0.649 10 - 28 ASME 0.19 4.826 28 0.907 0.1436 3.648 0.0232 0.589 10 - 30 ASME 0.19 4.826 30 0.847 0.1467 3.726 0.0217 0.55 10 - 32 ASME 0.19 4.826 32 0.794 0.1494 3.795 0.0203 0.516 10 - 32 UNF 0.19 4.826 32 0.794 0.152 3.853 0.019 0.487 P HOLTZ 0.19 4.826 39.9 0.637 0.196 GAS 0.196 4.978 32 0.794 16 PEND 0.1969 5 60 0.423 0.1772 4.5 0.0098 0.25 5 LOEW 0.1969 5 31.8 0.800 0.1496 3.8 0.0236 0.6 M5 Coarse 0.197 5 31.8 0.800 0.158 4.018 0.019 0.491 N HOLTZ 0.2 5.08 36.1 0.704 1 THURY 0.2083 5.29 28.2 0.900 1 BA 0.209 5.3 28.3 0.900 0.166 4.224 0.021 0.538 L HOLTZ 0.21 5.334 28.9 0.879 12 - 24 ASME 0.216 5.486 24 1.058 0.1619 4.112 0.0271 0.687 12 - 28 ASME 0.216 5.486 28 0.907 0.1696 4.308 0.0232 0.589 12 - 32 ASME 0.216 5.486 32 0.794 0.1754 4.455 0.0203 0.516 5.5 LOEW 0.2165 5.5 28.2 0.900 0.1634 4.15 0.0266 0.675 7/32 CEI 0.2188 5.558 26 0.977 0.1778 4.516 0.0205 0.521 7/32 BSF 0.219 5.558 28 0.907 0.173 4.394 0.023 0.582 18 PEND 0.2323 5.9 50 0.508 0.2079 5.28 0.0122 0.31 0 BA 0.236 6 25.4 1.000 0.189 4.8 0.024 0.6 M6 Coarse 0.236 6 25.4 1.000 0.188 4.773 0.024 0.613 0 THURY 0.2362 6 25.4 1.000 6 LOEW 0.2362 6 25.4 1.000 0.1772 4.5 0.0295 0.75 M HOLTZ 0.24 6.096 36.1 0.704 14 - 20 ASME 0.242 6.147 20 1.270 0.177 4.497 0.0325 0.825 14 - 24 ASME 0.242 6.147 24 1.058 0.1879 4.772 0.0271 0.687 No.4 GAS 0.246 6.248 27 0.941 1/4 BRASS 0.25 6.35 26 0.977 0.2008 5.1 0.0246 0.625 1/4 BSF 0.25 6.35 26 0.977 0.201 5.1 0.025 0.625 1/4 CEI 0.25 6.35 26 0.977 0.209 5.309 0.0205 0.521 1/4 UNC 0.25 6.35 20 1.270 0.189 4.793 0.031 0.779 1/4 UNF 0.25 6.35 28 0.907 0.206 5.237 0.022 0.557 1/4 WHIT 0.25 6.35 20 1.270 0.186 4.724 0.032 0.813 1/4 SPARK 0.25 6.35 24 1.058 0.1959 4.975 0.0271 0.687 K HOLTZ 0.25 6.35 25.7 0.990 1/4 GAS 0.26 6.604 27 0.941 16-18 ASME 0.268 6.807 18 1.411 0.1958 4.974 0.0361 0.917 16-20 ASME 0.268 6.807 20 1.270 0.203 5.157 0.0325 0.825 16-22 ASME 0.268 6.807 22 1.155 0.209 5.307 0.0295 0.75 -1 THURY 0.2681 6.81 23.1 1.100 7 LOEW 0.2756 7 23.1 1.100 0.2106 5.35 0.0325 0.825 M7 Coarse 0.276 7 25.4 1.000 0.227 5.773 0.024 0.613 9/32 CEI 0.2813 7.145 26 0.977 0.2403 6.104 0.0205 0.521 J HOLTZ 0.29 7.366 25.7 0.990 18-18 ASME 0.294 7.468 18 1.411 0.2218 5.635 0.0361 0.917 18-20 ASME 0.294 7.468 20 1.270 0.229 5.818 0.0325 0.825 -2 THURY 0.3043 7.73 20.7 1.230 5/16 CEI 0.3125 7.938 26 0.977 0.2715 6.896 0.0205 0.521 5/16 BSF 0.313 7.938 22 1.155 0.254 6.459 0.029 0.739 5/16 UNC 0.313 7.938 18 1.411 0.244 6.205 0.034 0.866 5/16 UNF 0.313 7.938 24 1.058 0.261 6.64 0.026 0.649 5/16 WHIT 0.313 7.938 18 1.411 0.241 6.132 0.036 0.904 8 LOEW 0.315 8 21.2 1.200 0.2441 6.2 0.0354 0.9 M8 Coarse 0.315 8 20.3 1.250 0.255 6.466 0.03 0.767 M8 Fine 0.315 8 25.4 1.000 0.267 6.773 0.024 0.613 20-16 ASME 0.32 8.128 16 1.588 0.2388 6.066 0.0406 1.031 20-18 ASME 0.32 8.128 18 1.411 0.2478 6.295 0.0361 0.917 20-20 ASME 0.32 8.128 20 1.270 0.255 6.478 0.0325 0.825 I HOLTZ 0.33 8.382 25.7 0.990 5/16 GAS 0.342 8.687 27 0.941 -3 THURY 0.3453 8.77 18.5 1.370 22-16 ASME 0.346 8.788 16 1.588 0.2648 6.726 0.0406 1.031 22-18 ASME 0.346 8.788 18 1.411 0.2738 6.955 0.0361 0.917 9 LOEW 0.3543 9 19.5 1.300 0.2776 7.05 0.0384 0.975 H HOLTZ 0.36 9.144 19.9 1.277 24-16 ASME 0.372 9.449 16 1.588 0.2908 7.387 0.0406 1.031 24-18 ASME 0.372 9.449 18 1.411 0.2998 7.616 0.0361 0.917 3/8 ADM 0.375 9.525 24 1.058 0.3216 8.17 0.0267 0.678 3/8 BRASS 0.375 9.525 26 0.977 0.3258 8.275 0.0246 0.625 3/8 BSF 0.375 9.525 20 1.270 0.311 7.899 0.032 0.813 3/8 CEI 0.375 9.525 26 0.977 0.334 8.484 0.0205 0.521 3/8 UNC 0.375 9.525 16 1.588 0.298 7.577 0.038 0.974 3/8 UNF 0.375 9.525 24 1.058 0.324 8.227 0.026 0.649 3/8 WHIT 0.375 9.525 16 1.588 0.295 7.493 0.04 1.016 3/8 SPARK 0.375 9.525 24 1.058 0.3209 8.15 0.0271 0.687 3/8 BSP 0.383 9.728 28 0.907 0.337 8.56 0.023 0.582 3/8 GAS 0.39 9.906 27 0.941 -4 THURY 0.3917 9.95 16.7 1.520 10 LOEW 0.3937 10 18.1 1.400 0.311 7.9 0.0413 1.05 M10 Coarse 0.394 10 16.9 1.500 0.321 8.16 0.036 0.92 M10 Fine 0.394 10 20.3 1.250 0.333 8.467 0.03 0.767 26-14 ASME 0.398 10.109 14 1.814 0.3052 7.752 0.0464 1.178 26-16 ASME 0.398 10.109 16 1.588 0.3168 8.047 0.0406 1.031 1/8 WPIPE 0.4063 10.319 28 0.907 0.3603 9.15 0.023 0.584 G HOLTZ 0.41 10.414 19.9 1.277 28-14 ASME 0.424 10.77 14 1.814 0.3312 8.413 0.0464 1.178 28-16 ASME 0.424 10.77 16 1.588 0.3428 8.707 0.0406 1.031 7/16 ADM 0.4375 11.113 24 1.058 0.3841 9.757 0.0267 0.678 7/16 BSF 0.4375 11.113 18 1.411 0.3663 9.304 0.0356 0.904 7/16 CEI 0.4375 11.113 26 0.977 0.3965 10.071 0.0205 0.521 7/16 CEI20 0.4375 11.113 20 1.270 0.3843 9.761 0.0266 0.676 7/16 UNC 0.4375 11.113 14 1.814 0.3499 8.887 0.0438 1.113 7/16 UNF 0.4375 11.113 20 1.270 0.3762 9.555 0.3067 7.79 7/16 WHIT 0.4375 11.113 14 1.814 0.346 8.788 0.0457 1.161 -5 THURY 0.4449 11.3 15 1.690 30-14 ASME 0.45 11.43 14 1.814 0.3572 9.073 0.0464 1.178 30-16 ASME 0.45 11.43 16 1.588 0.3688 9.368 0.0406 1.031 F HOLTZ 0.45 11.43 16.5 1.539 7/16 GAS 0.459 11.659 27 0.941 M12 Coarse 0.4724 12 14.5 1.750 0.3879 9.853 0.0423 1.074 M12 Fine 0.4724 12 20.3 1.250 0.4121 10.467 0.0302 0.767 12 LOEW 0.4724 12 15.9 1.600 0.378 9.6 0.0472 1.2 12MM SPARK 0.4724 12 25.4 1.000 0.4252 10.8 0.0236 0.6 Pg7 COND 0.492 12.5 20 1.270 0.444 11.28 0.0240 0.61 1/2 ADM 0.5 12.7 20 1.270 0.436 11.074 0.032 0.813 1/2 BRASS 0.5 12.7 26 0.977 0.4508 11.45 0.0246 0.625 1/2 BSF 0.5 12.7 16 1.588 0.42 10.668 0.04 1.016 1/2 CEI 0.5 12.7 26 0.977 0.459 11.659 0.0205 0.521 1/2 CEI20 0.5 12.7 20 1.270 0.4468 11.349 0.0266 0.676 1/2 UNC 0.5 12.7 13 1.954 0.4056 10.302 0.0438 1.113 1/2 UNF 0.5 12.7 20 1.270 0.4387 11.143 0.05 1.27 1/2 WHIT 0.5 12.7 12 2.117 0.3933 9.99 0.0534 1.356 E HOLTZ 0.5 12.7 13.1 1.940 -6 THURY 0.5039 12.8 13.5 1.880 1/2 GAS 0.515 13.081 27 0.941 1/4 BSP 0.518 13.157 19 1.337 0.451 11.455 0.0335 0.851 1/4 WPIPE 0.5313 13.494 19 1.337 0.4643 11.792 0.0335 0.851 M15 Coarse 0.5512 14 12.7 2.000 0.4546 11.546 0.0483 1.227 14 LOEW 0.5512 14 14.1 1.800 0.4449 11.3 0.0531 1.35 14MM SPARK 0.5512 14 20.3 1.250 0.4908 12.466 0.0302 0.767 9/16 ADM 0.5556 14.111 20 1.270 0.4915 12.485 0.032 0.813 D HOLTZ 0.56 14.224 13.1 1.940 9/16 BSF 0.5625 14.288 16 1.588 0.4825 12.256 0.04 1.016 9/16 CEI 0.5625 14.288 26 0.977 0.5215 13.246 0.0205 0.521 9/16 CEI20 0.5625 14.288 20 1.270 0.5093 12.936 0.0266 0.676 9/16 UNC 0.5625 14.288 12 2.117 0.4603 11.692 0.0511 1.298 9/16 UNF 0.5625 14.288 18 1.411 0.4943 12.555 0.0341 0.866 9/16 WHIT 0.5625 14.288 12 2.117 0.4558 11.577 0.0534 1.356 -7 THURY 0.5709 14.5 12.2 2.090 9/16 GAS 0.578 14.681 27 0.941 Pg9 COND 0.598 15.2 18 1.411 0.546 13.86 0.0264 0.67 5/8 ADM 0.625 15.875 20 1.270 0.561 14.249 0.032 0.813 5/8 BRASS 0.625 15.875 26 0.977 0.5758 14.625 0.0246 0.625 5/8 BSF 0.625 15.875 14 1.814 0.5336 13.553 0.0457 1.161 5/8 CEI 0.625 15.875 26 0.977 0.584 14.834 0.0205 0.521 5/8 CEI20 0.625 15.875 20 1.270 0.5718 14.524 0.0266 0.676 5/8 UNC 0.625 15.875 11 2.309 0.5135 13.043 0.0558 1.417 5/8 UNF 0.625 15.875 18 1.411 0.5568 14.143 0.0341 0.866 5/8 WHIT 0.625 15.875 11 2.309 0.5086 12.918 0.0582 1.478 DD HOLTZ 0.625 15.875 13.1 1.940 M16 Coarse 0.6299 16 12.7 2.000 0.5333 13.546 0.0483 1.227 M16 Fine 0.6299 16 16.9 1.500 0.5575 14.16 0.0362 0.92 16 LOEW 0.6299 16 12.7 2.000 0.5118 13 0.0591 1.5 5/8 GAS 0.637 16.18 27 0.941 -8 THURY 0.6496 16.5 10.9 2.320 3/8 BSP 0.656 16.662 19 1.337 0.589 14.961 0.0335 0.851 11/16 ADM 0.6875 17.463 20 1.270 0.6235 15.836 0.032 0.813 11/16 CEI 0.6875 17.463 26 0.977 0.6465 16.421 0.0205 0.521 11/16 CEI20 0.6875 17.463 20 1.270 0.6343 16.111 0.0266 0.676 3/8 WPIPE 0.6875 17.463 19 1.337 0.6205 15.761 0.0335 0.851 M18 Coarse 0.7087 18 10.2 2.500 0.5879 14.933 0.0604 1.534 18 LOEW 0.7087 18 11.5 2.200 0.5787 14.7 0.065 1.65 18MM SPARK 0.7087 18 16.9 1.500 0.6362 16.16 0.0362 0.92 Pg11 COND 0.732 18.6 18 1.411 0.680 17.26 0.0264 0.67 -9 THURY 0.7362 18.7 9.8 2.580 3/4 ADM 0.75 19.05 14 1.814 0.6585 16.727 0.0457 1.162 3/4 BRASS 0.75 19.05 26 0.977 0.7008 17.8 0.0246 0.625 3/4 BSF 0.75 19.05 12 2.117 0.6432 16.337 0.0534 1.356 3/4 CEI 0.75 19.05 26 0.977 0.709 18.009 0.0205 0.521 3/4 CEI20 0.75 19.05 20 1.270 0.6968 17.699 0.0266 0.676 3/4 UNC 0.75 19.05 10 2.540 0.6273 15.933 0.0613 1.558 3/4 UNF 0.75 19.05 16 1.588 0.6733 17.102 0.0625 1.588 3/4 WHIT 0.75 19.05 10 2.540 0.6219 15.796 0.064 1.626 C HOLTZ 0.75 19.05 9.5 2.688 3/4 GAS 0.77 19.558 27 0.941 M20 Coarse 0.7874 20 10.2 2.500 0.6666 16.933 0.0604 1.534 M20 Fine 0.7874 20 16.9 1.500 0.715 18.16 0.0362 0.92 Pg13.5 COND 0.803 20.4 18 1.411 0.750 19.06 0.0264 0.67 13/16 ADM 0.8125 20.638 14 1.814 0.721 18.314 0.0457 1.162 1/2 BSP 0.825 20.955 14 1.814 0.734 18.644 0.0457 1.161 -10 THURY 0.8346 21.2 8.9 2.870 1/2 WPIPE 0.8438 21.431 14 1.814 0.7548 19.171 0.0445 1.13 M22 Coarse 0.8661 22 10.2 2.500 0.7454 18.933 0.0604 1.534 7/8 ADM 0.875 22.225 14 1.814 0.7835 19.902 0.0457 1.162 7/8 BRASS 0.875 22.225 26 0.977 0.8258 20.975 0.0246 0.625 7/8 BSF 0.875 22.225 11 2.309 0.7586 19.268 0.0582 1.478 7/8 UNC 0.875 22.225 9 2.822 0.7387 18.763 0.0682 1.731 7/8 UNF 0.875 22.225 14 1.814 0.7874 20 0.0438 1.113 7/8 WHIT 0.875 22.225 9 2.822 0.7327 18.611 0.0711 1.806 7/8 SPARK 0.875 22.225 18 1.411 0.8028 20.392 0.0361 0.917 B HOLTZ 0.875 22.225 8.3 3.079 7/8 GAS 0.885 22.479 27 0.941 Pg16 COND 0.886 22.5 18 1.411 0.833 21.16 0.0264 0.67 5/8 BSP 0.902 22.911 14 1.814 0.811 20.599 0.0457 1.161 15/16 ADM 0.9375 23.813 14 1.814 0.846 21.489 0.0457 1.162 5/8 WPIPE 0.9375 23.813 14 1.814 0.8485 21.552 0.0445 1.13 M24 Coarse 0.9449 24 8.5 3.000 0.8 20.319 0.0725 1.84 M24 Fine 0.9449 24 12.7 2.000 0.8483 21.546 0.0483 1.226 -11 THURY 0.9492 24.11 8 3.190 1 ADM 1 25.4 12 2.117 0.8933 22.689 0.0534 1.355 1 BRASS 1 25.4 26 0.977 0.9508 24.15 0.0246 0.625 1 BSF 1 25.4 10 2.540 0.872 22.149 0.064 1.626 1 UNC 1 25.4 8 3.175 0.8466 21.504 0.0767 1.948 1 UNF 1 25.4 12 2.117 0.8978 22.804 0.0511 1.298 1 WHIT 1 25.4 8 3.175 0.8399 21.333 0.08 2.032 A HOLTZ 1 25.4 6.6 3.860 1 GAS 1.006 25.552 27 0.941 1 1/8 BRASS 1.04 26.416 26 0.977 0.9908 25.166 0.0246 0.625 3/4 BSP 1.041 26.441 14 1.814 0.95 24.13 0.0457 1.161 1 1/16 ADM 1.0625 26.988 12 2.117 0.9558 24.277 0.0534 1.355 3/4 WPIPE 1.0625 26.988 14 1.814 0.9735 24.727 0.0445 1.13 M27 Coarse 1.063 27 8.5 3.000 0.9181 23.319 0.0725 1.84 -12 THURY 1.0787 27.4 7.2 3.540 Pg21 COND 1.114 28.3 16 1.588 1.054 26.78 0.0299 0.76 1 1/8 1.125 28.575 7 3.629 0.942 23.927 0.0915 2.324 1 1/8 ADM 1.125 28.575 12 2.117 1.0183 25.864 0.0534 1.355 1 1/8 BSF 1.125 28.575 9 2.822 0.9828 24.963 0.0711 1.806 1 1/8 UNC 1.125 28.575 7 3.629 0.9497 24.122 0.0876 2.226 1 1/8 UNF 1.125 28.575 12 2.117 1.0228 25.979 0.0511 1.298 M30 Coarse 1.1811 30 7.3 3.500 1.012 25.706 0.0845 2.147 M30 Fine 1.1811 30 12.7 2.000 1.0845 27.546 0.0483 1.226 1 3/16 ADM 1.1875 30.163 12 2.117 1.0808 27.452 0.0534 1.355 7/8 BSP 1.189 30.201 14 1.814 1.098 27.889 0.0457 1.161 -13 THURY 1.2048 31 6.5 3.930 7/8 WPIPE 1.2188 30.956 14 1.814 1.1298 28.696 0.0445 1.13 1 1/4 BRASS 1.25 31.75 26 0.977 1.2008 30.5 0.0246 0.625 1 1/4 BSF 1.25 31.75 9 2.822 1.1078 28.138 0.0711 1.806 1 1/4 UNC 1.25 31.75 7 3.629 1.0747 27.297 0.0876 2.226 1 1/4 UNF 1.25 31.75 12 2.117 1.1478 29.154 0.0511 1.298 1 1/4 WHIT 1.25 31.75 7 3.629 1.067 27.102 0.0915 2.324 1 1/4 ADM 1.25 31.75 12 2.117 1.1433 29.039 0.0534 1.355 M33 Coarse 1.2992 33 7.3 3.500 1.1302 28.706 0.0845 2.147 1 BSP 1.309 33.249 11 2.309 1.193 30.302 0.0582 1.478 1 5/16 ADM 1.3125 33.338 12 2.117 1.2058 30.627 0.0534 1.355 1 WPIPE 1.3438 34.131 11 2.309 1.2278 31.185 0.058 1.473 1 3/8 ADM 1.375 34.925 12 2.117 1.2683 32.214 0.0534 1.355 1 3/8 BSF 1.375 34.925 8 3.175 1.215 30.861 0.08 2.032 1 3/8 UNC 1.375 34.925 6 4.233 1.1705 29.731 0.1022 2.597 1 3/8 UNF 1.375 34.925 12 2.117 1.2728 32.329 0.0511 1.298 -14 THURY 1.3858 35.2 5.8 4.370 M36 Coarse 1.4173 36 6.4 4.000 1.2241 31.092 0.0966 2.454 M36 Fine 1.4173 36 8.5 3.000 1.2724 32.319 0.0725 1.841 1 7/16 ADM 1.4375 36.513 12 2.117 1.3308 33.802 0.0534 1.355 Pg29 COND 1.457 37 16 1.588 1.397 35.48 0.0299 0.76 1 1/2 ADM 1.5 38.1 12 2.117 1.3933 35.389 0.0534 1.355 1 1/2 BRASS 1.5 38.1 26 0.977 1.4508 36.85 0.0246 0.625 1 1/2 BSF 1.5 38.1 8 3.175 1.34 34.036 0.08 2.032 1 1/2 UNC 1.5 38.1 6 4.233 1.2955 32.906 0.1022 2.597 1 1/2 UNF 1.5 38.1 12 2.117 1.3978 35.504 0.0511 1.298 1 1/2 WHIT 1.5 38.1 6 4.233 1.2866 32.68 0.1067 2.71 M39 Coarse 1.5354 39 6.4 4.000 1.3422 34.092 0.0966 2.454 -15 THURY 1.5748 40 5.2 4.860 1 5/8 BSF 1.625 41.275 8 3.175 1.4649 37.208 0.08 2.032 M42 Coarse 1.6535 42 5.6 4.500 1.4362 36.479 0.1087 2.761 M42 Fine 1.6535 42 8.5 3.000 1.5065 38.265 0.0725 1.841 1 1/4 WPIPE 1.6875 42.863 11 2.309 1.5715 39.916 0.058 1.473 1 3/4 1.75 44.45 5 5.080 1.4939 37.945 0.1281 3.254 1 3/4 BSF 1.75 44.45 7 3.629 1.567 39.802 0.0915 2.324 1 3/4 UNC 1.75 44.45 5 5.080 1.5046 38.217 0.1227 3.116 M45 Coarse 1.7717 45 5.6 4.500 1.5543 39.479 0.1087 2.761 -16 THURY 1.7874 45.4 4.7 5.400 Pg36 COND 1.850 47 16 1.588 1.791 45.48 0.0299 0.76 M48 Coarse 1.8898 48 5.1 5.000 1.6482 41.865 0.1208 3.067 M48 Fine 1.8898 48 8.5 3.000 1.7433 44.28 0.0725 1.841 1 1/2 WPIPE 1.9063 48.419 11 2.309 1.7903 45.472 0.058 1.473 2 BSF 2 50.8 7 3.629 1.817 46.152 0.0915 2.324 2 UNC 2 50.8 4.5 5.644 1.7274 43.876 0.1363 3.463 2 WHIT 2 50.8 4.5 5.644 1.7154 43.571 0.1423 3.614 -17 THURY 2.0276 51.5 4.2 6.000 M52 Coarse 2.0472 52 5.1 5.000 1.8057 45.865 0.1208 3.067 Pg42 COND 2.126 54 16 1.588 2.066 52.48 0.0299 0.76 1 3/4 WPIPE 2.1563 54.769 11 2.309 2.0403 51.822 0.058 1.473 M56 Coarse 2.2047 56 4.6 5.500 1.9391 49.252 0.1328 3.374 M56 Fine 2.2047 56 6.4 4.000 2.0115 51.093 0.0967 2.455 2 1/4 BSF 2.25 57.15 6 4.233 2.0366 51.73 0.1067 2.71 -18 THURY 2.2992 58.4 3.8 6.660 Pg48 COND 2.335 59.3 16 1.588 2.275 57.78 0.0299 0.76 M60 Coarse 2.3622 60 4.6 5.500 2.0965 53.252 0.1328 3.374 2 WPIPE 2.375 60.325 11 2.309 2.259 57.379 0.058 1.473 2 1/2 BSF 2.5 63.5 6 4.233 2.2866 58.08 0.1067 2.71 M64 Coarse 2.5197 64 4.2 6.000 2.2299 56.639 0.1449 3.681 M64 Fine 2.5197 64 6.4 4.000 2.3254 59.065 0.0967 2.455 -19 THURY 2.6102 66.3 3.4 7.400 2 1/4 WPIPE 2.625 66.675 11 2.309 2.509 63.729 0.058 1.473 M68 Coarse 2.6772 68 4.2 6.000 2.3874 60.639 0.1449 3.681 2 3/4 BSF 2.75 69.85 6 4.233 2.5366 64.43 0.1067 2.71 -20 THURY 2.9606 75.2 3.1 8.230 2 1/2 WPIPE 3 76.2 11 2.309 2.884 73.254 0.058 1.473 3 BSF 3 76.2 5 5.080 2.7439 69.695 0.128 3.251 2 3/4 WPIPE 3.25 82.55 11 2.309 3.134 79.604 0.058 1.473 3 WPIPE 3.5 88.9 11 2.309 3.384 85.954 0.058 1.473 3 1/4 WPIPE 3.75 95.25 11 2.309 3.634 92.304 0.058 1.473 5 1/2 WPIPE 4 101.6 11 2.309 3.884 98.654 0.058 1.473 3 3/4 WPIPE 4.25 107.95 11 2.309 4.134 105.004 0.058 1.473 4 WPIPE 4.5 114.3 11 2.309 4.384 111.354 0.058 1.473 4 1/2 WPIPE 5 127 11 2.309 4.884 124.054 0.058 1.473 5 WPIPE 5.5 139.7 11 2.309 5.384 136.754 0.058 1.473 5 1/2 WPIPE 6 152.4 11 2.309 5.884 149.454 0.058 1.473 6 WPIPE 6.5 165.1 11 2.309 6.384 162.154 0.058 1.473 Credits This HTML version by Bolo -- Josef T. Burger The Original HTML version Original compilation by Andy Pugh of Bodgesoc Industries, Sheffield, UK Additions and layout by Ian W. Wright, Sheffield, UK Original Last Updated on 18/07/00 By Ian W. Wright Email: [email protected]

Hey Colditz, Thanks for the kind words mate It's comments like these that make the time and effort all worth while. I totally agree with sstakoff, you MUST use the proper movement holder when replacing the hands. Damaging a jewel is a lot of extra work and extra tools/skills to correct it. Better to play it safe and use the holder that supports those jewels. The 7750 is an excellent movement to work on. You're really taking the plunge into watch repair: this being your first movement, but take it slow and gentle, and follow the guide, and it's more than achievable with your background in microelectronics. If you don't have the tools shown, you WILL need to purchase them, this is not a movement were you can "make do" with what you have available. Also, if you do break a part, don't get upset, there are plenty of spares for the 7750 online, and everything is easy to replace ... it's all a learning process. Kindest Regards Lawson

screw issue...thank to all......job done!!!

well, it has took me some time but i have a functional watch again. I have polished the best i could, i am happy for my first watch repair.Don't know if i said that in another post, but this old watch belonged to my father so it has some sentimental value for me. Thanks guys for the hints.

I know it is a very common thought that Timex produced watches for a short duration of service. But after having handle thousands of them over some 8 years now, I an more apt to think they were more focused on cost savings. After all they designed their movements to be what would latter be called upwardly compatible in computer jargon. For example they take the #24 movement modify it some and now it is the #25 with date ring. take that same base 24 add a rotor and you have an automatic. Plus the metal used was a benefit of having manufactured for the US military. Light weight and durable plus an over sized balance staff that can stand up for who knows how long. And even though the watch cases were base metal they stood up for years even as an everyday working man's watch.

ETA 7750 Walkthrough Part 2 Assembly Now we come to assemble the movement. Here are the lubricants that will be used. Now nothing creates more discussion and controversy than which lubricants should be used on movements in various applications. This is how I approach it ... your choices may vary. The 7750 I am servicing here is a "Top Grade" ETA movement made for TAG, which would normally be cased with a display back. Because of this I will be using Molykote DX instead of Jismaa 125 or 9501 grease for areas that will be seen. As their lubricating qualities are very close, my choice of using Molykote DX is purely for ascetic reasons, as its less visible to the eye, then the bright colours of the 9501 and Jismaa 125. You will notice that Molykote DX is recommended in the 7750 PDF; yet on the SwissLab documentation it states to use Jismaa 125, so all these lubricates are recommended and safe to use. If this was a "Standard" or "Elabore" Grade movement with a full metal caseback, then I'd just go with the SwissLab recommendations, or 9501 for ease of servicing. With all that being said, here is the Lubrication Index for this walkthrough. Housekeeping Make sure your work area has been wiped down to remove any dust, and clear away any unneeded items from around your workspace. Inspect your Screwdrivers and Tweezers, and dress them up if needed. There is nothing worse than marring a screwhead, or have components ping from your tweezers because they need to be re-dressed. Put on some finger cots, or latex gloves. Personally, I use only one latex glove on my left hand, as any manipulation with my right hand will be done with my old trusty customized Dumont Brass #4 tweezers. NEVER touch cleaned parts with bare hands, this will leave prints and tarnish the finish over time. We begin with the parts fresh from cleaning. Try and arrange them in a logical order to start with, this will save you time fishing for parts later on. The 7750 has 7 types of screws, and you'll need 4 sizes of screwdrivers - 0.8, 1.2, 1.4, 1.5mm 1) Date Platform, Crown and Ratchet Wheel Screws 2) Setting Lever Spring Screws (Note the pointed ends) 3) Hammer and Cam Screws 4) Oscillating Weight Screw (Single Screw with the short thread) 5) Pallet Fork, Main Plate, Chronograph Plate, Automatic Work Plate Screws 6) Screws for the Jumper Maintaining Plates 7) Single longer screw for the Balance Cock I like to arrange all the screws in groups like this, that way they are quick to find, and mismatching screws can't happen. One more thing to note on this assembly walkthrough, is that I started by using the 7750 plastic movement holder. I quickly however changed to a Bergeon 4040 movement holder, and found this much better when it came time to fit the plates and align pivots to their jewels. I'd suggest you use the Bergeon 4040 holder right from the get go. Lets begin! Place the Barrel on the Main Plate Next is the Escape Wheel Followed by the Second Wheel, which has the long pivot for the sub-dial hand. The Third Wheel is next to be installed With the last wheel in the train being the Great Wheel. Place 2 small spots of D5 as shown, so the Stop Lever will have a smooth action. Install the Stop Lever. Now install the Barrel/Train Bridge. (1.4 Driver) Make sure all pivots are located correctly and the train is free spinning BEFORE tightening down. Once tightened down check end shake. Install the Crown Wheel Then the Crown Wheel Core and screw down (1.2 Driver). Install the Ratchet Wheel and screw down (1.2 Driver). Once this is done, using a 1.2 Driver, turn the screw on the Ratchet Wheel a 1/4 of a turn to add energy to the Mainspring, and check the free running of the train. Next is the keyless work. Lubricate the Winding and Sliding Pinion as shown below. Also add a spot of 9501 to the Main Plate where the Winding Pinion will come in contact. Be sure when installing he Sliding Pinion that it's seated properly on the Stop Lever Install the Sliding Pinion Install the Winding Pinion Lubricate and install the Stem. Next is the Driver Cannon Pinion. This is one area that needs a lot of lubrication, as it will bind and damage the movement if it becomes dry. To install the Driver Cannon Pinion I use a Horotec Hand Fitting Tool MSA 05.011 Once properly lubricated, install the Driver Cannon Pinion Before installing the Rocking Bar, lubricate the points on the spring. Install the Rocking Bar. Install the Setting Lever Install the Yoke. Place the Setting Wheel on it's post. Construct the Setting Lever Jumper with the Intermediate Wheel As noted above, the screws for the Setting Lever Jumper are the ones with the pointy threaded ends. Be sure to lubricate position points on the setting bar before you lever it into place. Install the Setting Lever Jumper / Intermediate Setting Wheel. The keyless work is now complete, check it is functioning correctly, then turn the movement over. Once the movement is turned over install the Pallet Fork. Then install the Pallet Bridge. Once the bridge is in place, give the mainspring a few winds and check the free movement of the Pallet BEFORE screwing it down (1.4 Driver) After tightening down check the end shake. Use 9415 on the Exit Pallet Stone to lubricate the escapement. Replacing the Balance and oiling the Incabloc Jewels is next. Place the Balance back onto the movement, checking that it's free running before tightening the screw (1.4 Driver). Once tightened check side shake and end shake is correct. Remove the Incabloc Jewel, and then remove the Balance. Note the longer screw that is used to secure the Balance Cock. Cleaning them carefully by soaking in a container with Lighter Fluid ... I use Zippo Fluid. Once clean, dry the Balance and Incabloc Jewel and place a drop of 9010 on the Jewel as shown below. Make sure it covers at least 1/3 to 1/2 of the jewel, without the oil touching the sides of the jewel. Give the movement several winds to add some power to the Mainspring. Replace the Balance back on the movement and refit the Incabloc Jewel. Check that the Balance is oscillating freely. Then repeat the process for the jewel only on the Main Plate. Next to be installed is the Hammer Cam Jumper. Here is my method for installation. Place the Hammer Cam Jumper into position, turning it clockwise to lock it into the slots. Then place the Chronograph Cam on it's post, so that it rests on top of the cam jumper ... as shown below. Then while holding the arm of the cam jumper back, seat the Chronograph Cam into position and affix the screw (1.4 Driver) Install the Switch Insert the Operating Lever Spring, 2 Functions. Make special note of the orientation of this spring, as it will fit in both directions; but only one way is correct. Without lubricating, install the Minute-counter Driving Wheel, 30min. Install the Lock, 2 Functions, and screw down (1.4 Driver) Before installing the next item, which is the Operating Lever, 2 Functions, be sure to lubricate the hinging point from underneath with D5. Then install the Operating Lever, 2 Functions. Be sure that the spring arm of the Lock is out from under the Operating Lever and screw down (1.4 Driver). Place D5 into the little slot opening in the top of the hinge point. Install the Chronograph Wheel Friction. Install the Ratchet Wheel Driving Wheel Before placing the Chronograph Bridge onto the movement, you need to oil the jewel circled in the image below with D5 After oiling that jewel install the Chronograph Bridge. Next, place the Reduction Wheel into the hole in the Chronograph Bridge. Note that there is no post to locate this wheel, as it's on Automatic Device Bridge which will be installed later. The next item is the Oscillating Pinion which seems to cause people a lot of frustration. Here's my method to install it. Firstly, be sure of the correct orientation, as shown below. Pull the Crown out to the third position to engage the Stop Lever and hack the movement. Keep the movement in this hacked position until the Automatic Device Bridge is installed. Then install the Oscillating Pinion and seat it into it's lower jewel. You'll know you've done this correctly when it sits up straight and centered in the slot ... as shown in the image below. By taking your time and getting it well seated you will have less trouble when installing the Clutch later on. However, before we install the Clutch and Automatic Device Bridge, there are a few wheels and a hammer that need to be installed. Install the Chronograph Wheel, 60s, 30min Install the Minute-counting Wheel, 30 min. Install the Clutch 60s, 2 Functions. The Clutch needs to slip underneath a small click spring for the Reversing Wheel, so be careful not to bend and damage this spring. Then gently lift the arm of the Clutch over the Oscillating Pinion. Yes, it's a delicate job, but with a steady hand, patience and well dressed tweezers, it's not too hard. Before we install the Reversing Wheel, we need to lubricate it. The product needed is Lubeta V105, which is an immersion, or dip, lubricant. Simply hold the Reversing Wheel with tweezers and dip it into the solution. Then allow it to dry, which takes about 10 minutes. This leaves behind a waxy type lubricant that has impregnated deep into the wheel. Once dry, install the Reversing Wheel Install the Hammer, 2 Functions. Make special note of the orientation of the cam to the hammer. You may need to rotate the cam into this position before you fit the hammer. Now it's time to install the Automatic Device Bridge. Make sure all wheel pivots are correctly located in their jewels before tightening down (1.4 Driver) Pay close attention that the Oscillating Pinion is still seated correctly in it's pivot hole on the Clutch. One other troublesome operation for people is installing the Clutch Spring. This is my method of installation. Slide the long arm of the spring into it's position until the shorter end is touching the automatic bridge. Then with your tweezers grab the point illustrated below and lift it over the locating screw. Once over the screw, push it forward and until the loop is seated on the locating screw. Lastly, install the Hammer Spring, 2 Functions. Now you can un-hack the movement by pushing the Crown into it's winding position. Check that the Oscillating Pinion is being driven by the movement. Check the Chronograph functions are engaging and dis-engaging correctly by operating the pushers. Once you are satisfied all is well, turn the movement over. Now we come to the calendar work. For this I place the movement back in the Horotec 7750 plastic holder (MSA 09.050-01) Install the Free Cannon Pinion Install the Minute Wheel. Install the Hour Wheel Install the Intermediate Calendar Driving Wheel Next the Day Star Driving Wheel It is most important that you line up the driving tooth of this wheel with the marker on the Main Plate. If the wheel appears to be half a tooth off proper alignment, bring the Crown out to the hand setting position and adjust so the tooth lines up perfectly. Failure to do this will result in improper synchronization of the day and date. Install the Date Indicator Driving Wheel. This time you line up the wheel's driving tooth with the post for the Intermediate Calendar Driving Wheel. Failure to do this will result in improper synchronization of the day and date. Install the Hour-counting Wheel Install the Hour Hammer Install the Hour Hammer Operating Lever Install the Hour Counter Lock Install the Hour Hammer Spring Place on the Date Platform, and secure down (1.2 Driver) Install the Double Corrector, making sure the spring is correctly positioned. Place on the Date Indicator. Install the Date Jumper. Be sure you have selected the correct jumper, as the Day and Date Jumper are not Identical. Install the Day Jumper Install the Jumper Spring. Place on the Date Indicator Maintaining Plate and screw down (0.8 Driver) Place on the Date Jumper Maintaining Plate and screw down (0.8 Driver) Fit the Day Indicator, and test the function and timing of the Day/Date Turn over the movement to fit the last item. The last item to fit is the Oscillating Weight. Gently place it on the movement, check it's meshed properly and then screw down (1.5 Driver) Service on the ETA 7750 is now complete, and adjusting the timing of the movement is the only operation left. I hope this has been of interest and helps those wishing to tackle this caliber. I'm sure, as I did, that you'll find it a fun and reward movement to service.