EVERYTHING ABOUT LEAD SCREW THREAD TYPE

A socket cap screw, also known as a socket head capscrew, socket screw, or Allen bolt, is actually a type of cap screw using a cylindrical head and hexagonal drive gap. The term socket head capscrew usually refers to your type of threaded fastener whose head diameter is nominally 1.5 periods that with the screw shank (significant) diameter, by usin