I'm looking for the specs on the countersunk ISCG bolts that hold the backplate to the ISCG tabs. I need to order some bolts but I don't have ones in front of me to compare to. I'm looking for the longer ones, not the shorter ones.
Length shouldn't make a difference just make sure you get them long enough. I've used all different lengths based on how many spacers are needed for e13 guide and what not. I would get whatever length will let you thread it into the ISCG mount on the frame and have a mm or 2 sticking out the other side. That way you know they grabbed enough threads since it went all the way through the iscg mount.