Replacement screw for the Holosun 509t and similar optic
This screw replaces the crossbolt which clamps the optic to the optic plate/mount.
Hex drive
Black oxide is steel alloy
Stainless is 18-8
Disclaimer: These have domed heads compared to OEM. It does not affect function but will fit into the recess with a different appearance than OEM screws.
No blue loctite is shipped pre-installed on these. This is to allow the user to apply a drop of blue loctite and torque to proper specs. Dried loctite affects torque values.