5/16"-24 x 7/8" Black Oxide Steel Fine Thread Socket Set Screws (8 pcs.)

Diameter: 5/16"
Length: 7/8"
Material: Steel
Finish: Black Oxide
Driver Type: Hex
Thread Size: 24 (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.