M4 Black Steel Thumbscrews
These black, stainless steel thumb screws are used to attach the small leather band tabs to frames. With a thread size of M4 (4mm), these compact screws make changing and attaching bands easy and quick.
With a thread length of 8mm long, these thumbscrews are suitable for frames with internally threaded holes with a scale thickness of up to 1/4″ (6.35mm).
This is for a pair of black thumbscrews.