5/8"-11 x 5-1/2" Zinc Grade 5 Hex Cap Screws (20 pcs.)

Diameter: 5/8"
Length: 5-1/2"
Material: Steel
Finish: Zinc
Head Style: Hex (15/16" Wrench)
Thread Size: 11 (Coarse)
Thread Length: 1-1/2"
Hardness: Grade 5
Type: Cap Screw

Box of 20.

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