These are a set of four 6-32, T15, black oxide screws cut to length for mounting the Holosun 509T plate to the V9 slide. These are custom made screws specific to our optic plate and do not have exposed cut metal on the bottom.
We suggest degreasing these thoroughly (along with the threads in the slide) and using blue Loctite for the left/ejector side screws, and red Loctite for the right/extractor side screws. Be careful to make sure no Loctite makes its way into the extractor channel, or anywhere else in the gun.
IMPORTANT: short screw is installed on the right/extractor side, and the long screw is installed on the left/ejector side of the slide.
THESE ARE FOR SECURING THE PLATE TO THE SLIDE.
Recommended torque specs for this specific screw is 22 in lb, but we've been able to secure them all the way up to ~45 in lb. Use caution and verify that your screw driver's head is fully seated before torquing.