Diameter: 7/8"
Length: 1-1/2"
Material: Steel
Finish: Zinc
Head Style: Hex (1-5/16" Wrench)
Thread Size: 9 (Coarse)
Thread Length: 1-1/2"
Hardness: Grade 2 / A307
Type: Cap Screw

Box of 5.

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