5/16-18 x 1 Zinc Plated Grade 5 Steel Coarse Thread Hex Washer Head Serrated Flange Bolts
Diameter: 5/16Length: 1Material: SteelFinish: ZincHead Style: Hex Washer (1/2 Wrench)Thread Size: 18 (Coarse)Thread Length: FullHardness: Grade 5Style: SerratedType: Flange BoltBox of 8.A flange bolt has a wide flange beneath the hex head of the bolt. Applied with a wrench.