5/16 USS Flat Washer Med Carbon Through Hardened Plain Domestic USA - Carton (3500) 1 1/8-7 A325 Type 1 Heavy Hex Bolts Plain Domestic USA pre-assembled in a bulk keg

5 16 USS Flat Washer Med Carbon Through Hardened Plain Domestic USA Carton (3500) 1 1 8 7 A325 Type 1 Heavy Hex Bolts Plain Domestic USA pre assembled in a bulk keg pre assembled in a bulk keg of 190 pieces for convenient use Over sized thread diameter tightly fills the existing spike holes for better holding strength and a watertight fit #3 square drive virtually eliminates cam out during hard to reach installations Durable UV resistant white and brown head paint matches most gutter systems Thick galvanized base coating guaranteed not to rust or react with aluminum Free driver bit included American made Their plain finish and wide USS pattern are engineered to distribute pressure evenly these washers offer superior durability and prevent bolt and nut embedment into softer materials