Help: Lost Screw for Omega Caliber 565 Part 1438

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Hello everyone,


I am currently servicing an Omega Caliber 565 movement and unfortunately lost the small screw that secures the following part:


  • Part name: Drive member for locking wheel bearing (Bearing for driving gear for ratchet wheel)
  • Part number: 1438

I would greatly appreciate if anyone could advise:


  1. What is the correct part number for the screw that holds this part?
  2. Does anyone know a source where I can order this screw, either original or a compatible replacement?

For reference, the screw is very small, likely around Ø0.8 mm diameter, and approximately 1.2–1.3 mm in length, but I would like to confirm the exact specifications.


Any guidance, advice, or links to suppliers would be extremely helpful. Thank you in advance for your help!

 
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I just wanted to share a quick update regarding the small screw for Omega Caliber 565, Part 1438 (Drive member for locking wheel bearing / Bearing for driving gear for ratchet wheel).


After some research, it seems that the correct screw is listed as:


  • Part number: 2138 / 72200002138
  • Description: Screw for bearing / supports the driving gear for ratchet wheel

So it looks like I’ve figured out which screw is needed to properly secure this part. Hopefully this information can help anyone else who might run into the same issue.
 
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Yes, 2138 is the correct screw.