Hex head cap screw made with high head to 1933 SAE standards so it is appropriate for antique and vintage automobiles produced before 1940.
Material: 4140 Steel, heat treat grade 8
Finish: Natural
Thread: 5/16-18
Thread length: 5/8
Length under head: 3/4
Hex: 1/2
Head height: 1/4
OAL: 1.00
