8-16X1 1/2 Phil Pan Thread Rolling Screws 48-2 Full Thread 18-8 SS Passivated Black Oxide Wax (Pack Qty 2,000) BC-0824LPP188B

Trilobular thread rolling screw. As each lobe of the screw moves through the pilot hole in the nut material, it forms and work-hardens the nut thread metal, producing an uninterrupted grain flow For drilled, punched or corred holes in all ductile metals and punch extruded metals. Eliminates chips, requires low drive torque and provides excellent resistance to vibrational loosening