Oyster bracelet screw specs

[kaseri]

I'm working on a little project and I don't want to remove & use the screws from the Oyster bracelet. I'd rater keep the original screws affixed to the OEM bracelet. That being said I am trying to cross reference/spec out the following Rolex part numbers-

32-20638
32-20687

I'm hoping someone can provide the following specs for the above listed Rolex part numbers so I can figure out which generics to buy.

1) Diameter
2) Length
3) Tap size

[rmfnla]

If by "generics" you mean aftermarket be aware that there is more to it than length, diameter, and tap size (of course! ).

Since there are no heads on these screws they index on the shoulder (where the threads end), so that area has to be correct as well for the screw to go in the correct amount...

[kaseri]

The aftermarket screws I am looking at are made for the Oyster bracelet but they come in various sizes. I am hoping someone has the specs for the screws I need so I can order the correct ones.