10X1/2 Round Head Type U Drive Screw Zinc (Pack Qty 8,000) BC-1008U

For making permanent fastenings in metals and plastics, when forced into the work under pressure Steel: AISI 1016 - 1024 or equivalent steel: Drive screws shall produce mating threads without shearing of threads or fracture of the screw when driven into properly sized holes in test plates having a Rockwell hardness of B70 to B85 18-8 Stainless Steel: Not recommended for use in materials of a hardness greater than Rockwell B 65You may also like 10-32X3/8 Unslotted Ind Hex Washer Thread Cutting Screw Type 1 Full Thread Zinc Green (Pack Qty 8,000) BC-11061WG.