1/4"-28 x 7/16" Black Oxide Steel Fine Thread Socket Set Screws (20 pcs.)

Diameter: 1/4"
Length: 7/16"
Material: Steel
Finish: Black Oxide
Driver Type: Hex
Thread Size: 28 (Fine)
Type: Socket Set Screw

Box of 20.

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