Product Description Hillman The Fastener Center Slotted Hex Washer Head Zinc Sheet Metal Screw 100 PC Hex slotted washer head sheet metal screw. Zinc plated. Packed 100-pieces per package. From the Manufacturer These sheet metal screws, or tapping screws, are highly versatile and are used to attached metal, wood, fiberglass, and plastic. The sharp threads draw material together and ensure a secure hold. Sheet metal screws are fully threaded with a sharp point.