Type U Drive Screws also known as hammer drive screw are un-slotted round head self-tapping screws used for making permanent fastenings in metal and plastics, such as securing nameplates in castings. They require a pre-drilled hole and can be installed with a hammer.
Round Head Type "U" Drive Screw
18-8 Stainless Steel
Description
4 X 1/4 Round Head Type U Drive Screw 18-8 Stainless Steel ANSI/ASME