Sheet Metal Screw, #10 x 1/2 in, 18-8 Stainless Steel Hex Head Slotted Drive, 100 PK A sheet metal screw has sharp threads that cut into a material such as sheet metal, plastic, wood, hard rubber, aluminum, and other comparable compositions..
Wedge Anchor, 1/2" Dia., 7" L, Steel Zinc Plated, 15 PK This jams the end of the bolt, and provides the strength. All mechanical bolts have a wedge arrangement at the end.