1/2"-13 x 2-1/2" Silicon Bronze Coarse Thread Hex Cap Screws

Diameter: 1/2"
Length: 2-1/2"
Material: Silicon Bronze
Head Style: Hex (3/4" Wrench)
Thread Size: 13 (Coarse)
Thread Length: 1" to 2"
Type: Cap Screw

Box of 2.

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