5/16″-18 X 6″ Zinc Plated Grade 2 / A307 Steel Coarse Thread Hex Bolts HBHS-209

Diameter: 5/16″Length: 6″Material: SteelFinish: ZincHead Style: Hex (1/2″ Wrench)Thread Size: 18 (Coarse)Thread Length: 7/8″Hardness: Grade 2 / A307Type: Cap ScrewA hex cap screw has a hexagonal head, designed to be driven by a wrench.