5/16"-24 x 1-1/4" Zinc Grade 8 Hex Cap Screws (20 pcs.)

Diameter: 5/16"
Length: 1-1/4"
Material: Steel
Finish: Yellow Zinc
Head Style: Hex (1/2" Wrench)
Thread Size: 24 (Fine)
Thread Length: 1-1/4"
Hardness: Grade 8
Type: Cap Screw

Box of 20.

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