Hillman 10 x 1-1/2 In. Green Painted Head Self Piercing Sheeter Screw a reliable and versatile fastening solution i for attaching metal, wood, fiberglass, and plastic materials. These sheet metal screws, also known as tapping screws, feature sharp threads that effectively draw materials together, providing a secure and lasting hold. Fully threaded with a sharp point, they ensure easy piercing and strong grip for various applications, making them an essential choice for your fastening needs. Model Number: