Diameter: 1"
Length: 12"
Material: Steel
Finish: Green Rinsed Zinc
Head Style: Hex (1-1/2" Wrench)
Thread Size: 8 (Coarse)
Thread Length: 2-1/2"
Hardness: Grade 5
Type: Cap Screw

Box of 4.

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