AS 1475 Accro alarm

[jerseyben]

Working on an Accro Alarm AS 1475.

I found the stem here:  https://www.watchmaterial.com/winding-stem-original-as-a-schild-1475-1930-alarm-part-7401/

I cannot locate a crown.  Any suggestions for part number or source, please?

[Knebo]

The diameter of the thread will determine the crowns that will fit the stem.

However, which crowns will fit the watch case (crown tube, if any) is a different question! You'd have to share more information/pictures and measurements for that.

Cheers

[RichardHarris123]

Cousins have a search, here are the parameters. 

[jerseyben]

Any way to discern the thread size from the link provided for the stem I will be ordering?

[RichardHarris123]

Measure the diameter of the stem. 

[tomh207]

6 minutes ago, RichardHarris123 said:

Measure the diameter of the stem. 

Threaded part only

Tom

[RichardHarris123]

10 minutes ago, tomh207 said:

Threaded part only

Tom

Good point. 

[mikepilk]

If you bought the alarm stem shown in the link, it's Tap 9 (0.9mm), as I just changed one on an AS 1931 which uses the same part. 

I imagine the case will have crown tubes which you will have to measure. On my watch, a Memostar, the tubes measure 2.5mm (external diameter).  So, for example, I needed a crown : Tap 9, waterproof, with 2.5mm stem tube.
Then select the desired crown diameter. I wanted 5.50mm so chose -

Do you have a pic of the case?

[AndyGSi]

If you've got the winding/setting crown then you'll need to measure this to get a match or replace this also.

I'd expect the stem to be 0.9mm but you could measure the winding/setting stem thread now.

[mikepilk]

4 minutes ago, AndyGSi said:

If you've got the winding/setting crown then you'll need to measure this to get a match or replace this also.

I'd expect the stem to be 0.9mm but you could measure the winding/setting stem thread now.

The alarm stem is tap 9, I guess the winding stem could be different ?

Edited January 13 by mikepilk

[jerseyben]

Incredible helpful replies.  Thank you!

[RichardHarris123]

Photos please. 

[AndyGSi]

34 minutes ago, mikepilk said:

The alarm stem is tap 9, I guess the winding stem could be different ?

I'd have expected them to be the same to match the crowns.

[mikepilk]

The winding and alarm stems (at least on Memostar AS 1931) are both 0.90mm, but as you show, different parts.

The 1475/1568 and 1930/31 are the same movements running at different rates. So I would expect the stems to be the same.

But Cousins also list another winding stem (401) for both 1475 and 1931 movements as Tap 12. Very strange.

Edited January 14 by mikepilk