4-24 x 1/2 Phillips Oval Self Tapping Screw Type AB Fully Threaded Black Oxide MS1188 This 1/4-20 x 5/16 Phillips

This 1/4-20 x 5/16 Phillips flat undercut machine screw is fully threaded and made of zinc

while the black oxide finish provides corrosion resistance

The cadmium and wax coating provides excellent corrosion resistance and lubrication

The nut has a serrated flange that bites into the metal sheet

The six-lobe drive provides superior bit engagement and reduces cam-out

4-24 x 1/2 Phillips Oval Self Tapping Screw Type AB Fully Threaded Black Oxide MS1188 This 1/4-20 x 5/16 PhillipsThese 4 24 x 1 2 Phillips Oval Self Tapping Screw Type AB Fully Threaded Black Oxide screws are designed for use in a variety of applications. They are made of steel and have a black oxide finish for corrosion resistance. The screws have a Phillips drive and an oval head. They are self tapping, which means they can create their own threads in the material they are being driven into. These screws are fully threaded, which means they have threads along