Omega Seamaster Cosmic, calendar plate bolts.

[swiss2k]

Hello everybody! 

I have recently started working on this Omega Seamaster Cosmic (with day and date). And it is giving me nightmares...  

The problem is with the calendar plate. Initially when I got the watch, one of the screw that holds the plate was missing, and the other one was not a proper one. After some investigation I found in a manual that the right screws are p/n: Omega 3441.  

 But! They do not fit. The screw head is, as I think and see it, larger than the channel it supposed to go in. Or maybe, there is something is the channel itself?

The screws were ordered from CousinsUK, and I think those were advertised as the original ones.  

So, I can’t figure out, are the screws too short or their heads too wide, or do I just need other screws? Please kindly advise!  

Thank you! 

[Kalanag]

Here a pic for comparison:

The size of the screw head looks right! Are the threads in the plate o.k.? There might be a reason why one screw was missing and one was wrong…
 

Edited September 27, 2022 by Kalanag

[swiss2k]

Thank you for the reply @Kalanag. 

The threads look good under the microscope. Also tried screwing one screw without the plate, and it fits perfectly. 

[Kalanag]

Based on this pdf you have the wrong screw (too short)!

It should be No. 2050!

Omega 752

Edited September 27, 2022 by Kalanag

[swiss2k]

@KalanagYou sir, are a lifesaver! Now I can sleep! Thank you!

But honestly, where ever I looked they would suggest the 3441 screws. For example one the pic I have attached, there they show the dial side with those screws.

 

Well anyway, I will order the 2050 screws. And thank you for the PDF also! 

 

[swiss2k]

I figured I would share my results after fully assembling the watch. Once again @Kalanagthank you for the help! 

Edited October 14, 2022 by swiss2k

[Kalanag]

Well done!