7/8"-9 x 12" Zinc Grade 2 / A307 Hex Bolts HBHS-644 (5 pcs.)

Diameter: 7/8"
Length: 12"
Material: Steel
Finish: Zinc
Head Style: Hex (1-5/16" Wrench)
Thread Size: 9 (Coarse)
Thread Length: 2-1/4"
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.