5/16"-18 x 1" Zinc Plated Grade 8 Steel Coarse Thread Hex Cap Screws HCS8-093

Diameter: 5/16"
Length: 1"
Material: Steel
Finish: Yellow Zinc
Head Style: Hex (1/2" Wrench)
Thread Size: 18 (Coarse)
Thread Length: 1"
Hardness: Grade 8
Type: Cap Screw
A hex cap screw has a hexagonal head, designed to be driven by a wrench.