Chosen Solution
I’ve got a couple of stripped screws on my Apple Watch (original series) that I am trying to replace. The iFixit website sells a set of these screws (IF308-017-1) but they are out of stock and have been for at least a month. If I could get the description of each screw I could purchase each individual screw that I need. Example screw description = M1x2 mm.
The iFixit screw set was assembled by someone taking the time to strip down a watch for its parts. Sadly, the demand for the screws for this series of watches is just not there. The best you can do is locate a junker to do the same stripping it down to get the needed screws to fix yours. I don’t know of anyone still fixing this series, so getting a listing of the screws sizes even from Apple is not likely to happen and most are custom screws not something you can locate from other sources.