Engineered from AISI 1016 steel, these screws possess a robust surface hardness with a minimum Rockwell Hardness of C45, ensuring durability during installation. Each screw features a Phillips pan head that accepts both Phillips and slotted drives, providing versatility in securing various materials. Designed for efficiency, they can tap their own mating internal thread when driven into preformed holes in metallic substrates, while eliminating the need for predrilled holes in wood. With full threading and a zinc plating that meets ASTM Specification F1941, these screws offer reliable performance in a variety of applications, making them a sound choice for your hardware needs. Packed in boxes of 100, they conform to the ASME B18.6.3 dimensions for consistent quality.