Originally Posted by
Elwin
Resurrecting this thread because I'm at a loss for what I'm trying to do.
Impact Machine used M4 screws for the EPS Carry dots they installed for me. I measure the length as 9.4mm - no problem, I can file a 10mm length. My problem is the head diameter - I'm unable to find a Torx M4 screw with a head diameter of 6mm to 6.5mm (Holosun factory is ~6mm and the Impact screws are ~6.4mm). The closest McMaster-Carr I'm finding has an 8.4mm head. They're also zinc-plated, and while that's not a deal breaker I'd certainly prefer black oxide.
Is that a small enough difference to not matter because at worst it will just stand a bit proud while still working, or do I need something else? First time dot owner and I'm way out of depth with the screw part of it.