1-1/8" x 5-1/2" Zinc Grade 5 Hex Cap Screws CSHS5-816 (2 pcs.)

Diameter: 1-1/8"
Length: 5-1/2"
Material: Steel
Finish: Zinc
Head Style: Hex (1-11/16" Wrench)
Thread Size: 7 (Coarse)
Thread Length: 2-1/2"
Hardness: Grade 5
Type: Cap Screw

Box of 2.

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