3/8"-24 x 5/8" Black Oxide Steel Fine Thread Socket Set Screws

Diameter: 3/8"
Length: 5/8"
Material: Steel
Finish: Black Oxide
Driver Type: Hex
Thread Size: 24 (Fine)
Type: Socket Set Screw

Box of 10.

A socket set screw is the most common set screw, which is tightened or loosened with a hex key.