Diameter: 3/4"
Length: 6-1/2"
Material: Steel
Finish: Hot Dip Galvanized
Head Style: Hex (1-1/8" Wrench)
Thread Size: 10 (Coarse)
Thread Length: 4 to 6"
Type: Cap Screw

Box of 10.

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