1/2"-20 x 3/8" Black Oxide Steel Fine Thread Socket Set Screws

Diameter: 1/2"
Length: 3/8"
Material: Steel
Finish: Black Oxide
Driver Type: Hex
Thread Size: 20 (Fine)
Type: Socket Set Screw

Box of 8.

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