Back Home / Fasteners / TEK SCREW HEX WASHER HD 5/16″ X 1″ TEK SCREW HEX WASHER HD 5/16″ X 1″ SKU: X56X1T Category: Fasteners A tapping screw with spaced threads and a drill point which drills its own hole May be used to attach plywood, soft woods or composition board to metal, or attach metal to metal All self-drilling screws offer economical benefits: reduces labor and tooling costs; reduces or eliminates drill bits and taps Hex washer head Steel zinc plated Rockwell hardness C52 minimum Case Quantity: 50 Log In For Pricing