3/8"-16 x 3/4" Polished 18-8 Stainless Steel Coarse Thread Hex Cap Screws

Diameter: 3/8"
Length: 3/4"
Material: Stainless Steel
Finish: Polished
Head Style: Hex (9/16" Wrench)
Thread Size: 16 (Coarse)
Thread Length: Full
Hardness: 18-8
Type: Cap Screw

Box of 8.

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