(8000) 10 x 3/4 Self Drilling TEK 3 Hex Washer Head Zinc Siding Screw #137720. STRONG-POINT® UNSLOTTED INDENTED HI-HEX WASHER HEAD W/REVERSE SERRATIONS, ZINC PLATED. This self-tapping screw is recommended for medium guage sheet metal. The item "(8000) 10 x 3/4 Self Drilling TEK 3 Hex Washer Head Zinc Siding Screw #137720" is in sale since Thursday, July 13, 2017. This item is in the category "Business & Industrial\Material Handling\Packaging & Shipping\Other Packaging & Shipping".The seller is "shinersusa" and is located in Grand Prairie, Texas. This item can be shipped to United States.