HEX SLF DRILR No3 #12 5.5 X 30 *FINE*Y/P

A self-drilling screw combines a drill bit-shaped tip with a threaded shank, allowing it to drill its own pilot hole and tap its own thread in one operation. This eliminates the need for pre-drilling and speeds up installation, especially in metal-to-metal and metal-to-timber fastening. Available in various head styles such as hex, pan, wafer, and countersunk.