Internet Horology Club 185
Screws, sizing defining and sourcing

This topic can be found at:
https://ihc185.infopop.cc/eve/forums/a/tpc/f/3426047761/m/9503961277

May 18, 2012, 19:09
Tony Roulston
Screws, sizing defining and sourcing
Hello, I have a broken screw that needs replacing.

My question relates to how I might describe the screw as there seems to be as many different sizes as there are watches in production.

The screw in question is the ratchet wheel screw. 4.84mm across the head, which is flat and 0.31mm thick. The threaded shaft is 0.82mm and is about 2mm long.

I have added picture of the movement and ratchet wheel. I guess what I really need is a box of assorted screws to have on hand.

Otherwise where might I find such items?

Regards, Tony

Missing ratchet screw.

May 18, 2012, 23:46
Melvin Siedman
Hi I have a stash of crown wheel screws like the pictures attached. There are 144 LEFT HAND ASSORTED SCREWS. (NOT counted)
For sale at $25 shipped anywhere in the USA.
3 pictures


May 18, 2012, 23:46
Melvin Siedman
Picture #2


May 18, 2012, 23:47
Melvin Siedman
Picture #3


May 26, 2012, 06:15
Tony Roulston
Hi Melvin, email sent. I think I misspelled you name, sorry.

Tony