3/8"-24 x 1" Chrome Plated Grade 5 Steel Fine Thread Hex Cap Screws

Diameter: 3/8"
Length: 1"
Material: Steel
Finish: Chrome
Head Style: Hex (9/16" Wrench)
Thread Size: 24 (Fine)
Thread Length: Full
Hardness: Grade 5
Type: Cap Screw

Box of 10.

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