3/8"-16 x 1-1/4" Silicon Bronze Coarse Thread Hex Cap Screws

Diameter: 3/8"
Length: 1-1/4"
Material: Silicon Bronze
Head Style: Hex (9/16" Wrench)
Thread Size: 16 (Coarse)
Thread Length: Full
Type: Cap Screw

Box of 5.

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