Use to fasten duct work to steel framing, electrical accessories to steel framing, overhead steel doors, hinges, and latches Provides secure metal to metal fastening without the need to pre-drill and reduces cam-outs for high performance drive surfaces and recess Precise point designed to drill, tap, and fasten all in one motion Zinc plated finish protects the job's appearance High performance drive surfaces reduce cam-outs to penetrate surface the first time for easy installation Self-tapping screw No pre-drilling needed