5-40 x 1/4 Coarse Thread Flat Socket Cap Screw Plain NSTH and the drive type is

and the drive type is hex

while the shoulder prevents the fastener from being over-tightened

and a 6-lobe drive

It is fully threaded and has a type 23 thread

The thread rolling process ensures a strong and precise thread engagement

5-40 x 1/4 Coarse Thread Flat Socket Cap Screw Plain NSTH and the drive type is5 40 x 1 4 Coarse Thread Flat Socket Cap Screw Plain is a type of screw with a flat head and a socket drive. It is made of steel and has a coarse thread. The screw is 1 4 inch in diameter and 5 40 inch in length. It is used to fasten two pieces of metal together. The flat head allows the screw to be countersunk into the surface of the metal, and the socket drive allows the screw to be tightened with a socket wrench.