This nice quality unplated No. 6-48 fillister head screw is made for mounting a rib, or rear sight. Overall length is 0.305"
This is a popular gunsmithing screw thread size, often used on modern telescope mounts, T/C rifle ribs. We offer gunsmith quality carbon steel plug taps, bottom taps, tap drills, and clearance drills, for easy installation of this screw, at low cost.