.Self-Drilling Screw, #14 x 1-1/4 in, Zinc Plated Steel Hex Head Hex Drive, 61 PK A self-drilling screw, or tek screw, is similar to a sheet metal screw, but it has a drill-shaped point to cut through the substrate to eliminate the need for drilling a pilot hole.
Sheet Metal Screw, #10 x 2-1/2 in, Painted 18-8 Stainless Steel Pan Head Phillips 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..
A socket cap screw is a type of cap screw with a hexagonal recessed drive..#10-24 Socket Head Cap Screw, Plain Steel, 1-1/4 in Length, 100 PK Socket screws are commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket.