1/4"-20 x 7/8" Black Chrome Plated Steel Coarse Thread Hex Cap Screws

Diameter: 1/4"
Length: 7/8"
Material: Steel
Finish: Black Chrome
Head Style: Hex (7/16" Wrench)
Thread Size: 20 (Coarse)
Thread Length: Full
Type: Cap Screw

Box of 8.

A hex cap screw has a hexagonal head, designed to be driven by a wrench.