#10-24 X 1/2" SEMS Machine Screws with External Tooth Lock Washer, Pan Head with 6Lobe Torx(r) Drive, Steel, Zinc Plated and Baked

Machine screws are designed for applications with a pre-tapped hole or mated to a threaded nut. SEMS screws come pre-assembled with permanently installed free-spinning lock washer. A 6-lobe recess is also known as a hexalobular internal drive...