This Thompson Center manufactured brass forend cap screw with a flat head measures between .725" and .775" in length and is for the later Hawken muzzle loading rifle. This screw is in very good condition with light slot wear and a moderate tarnish. (file photo)
Note: Thompson Center Hawken muzzle loading rifles with the following serial numbers have been observed with this part:
Percussion: 374282
Flintlock: 63277