The Hillman Stainless Steel Oval-head Phillips Sheet Metal Screw, or tapping screw, is highly versatile and is used to attach metal, wood, fiberglass and plastic. Great for general repair around the house, the sharp threads on this oval head screw draw material together and ensure a secure hold. A pre-drilled hole is required for installation of these oval head stainless steel screws. These sheet metal screws will get the job done! #12 screw size; measure 1 in. L Sheet metal screws are a part of the Hillman Deep Drawer program Pre-drilled hole is required for these oval head stainless steel screws Design makes it easy for them to tap into and tighten against whatever they are being installed into Stainless steel finish makes oval head screw perfect for exterior and most marine applications Sharp threads ensure a secure hold Designed for joining metal objects, and attaching metal to wood, fiberglass and plastic