10x1-1/2 tap-n-seal. Metal-to-wood screws for fastening light gauge metal or fiberglass to wood. Bonded neoprene washer under hex head. All screws are a No. 10.Auxiliary retails reflect per each retail. Thread Diameter: #10, Length: 1 - 1/2", Head Type: Hex Head with Sealing Washer, Pkg Qty: 100, Package Type: Box No. 560909: Thread Diameter: #10, Length: 2", Head Type: Hex Head with Sealing Washer, Pkg Qty: 75, Package Type: Box No. 560910: Thread Diameter: #10, Length: 2 - 1/2", Head Type: Hex Head with Sealing Washer, Pkg Qty: 75, Package Type: Box No. 560911: Thread Diameter: #10, Length: 3", Head Type: Hex Head with Sealing Washer, Pkg Qty: 50, Package Type: Box