9/16-12 x 1 1/2 Hex Head Cap Screws, Steel Grade 5, Zinc Plating (Quantity: 275 pcs) - Coarse Thread UNC, Fully Threaded, Length: 1 1/2 Inch, Thread Size: 9/16 Inch

When selecting a nut to be used for a graded hex cap screw, keep in mind that the nut should have the same grade as the bolt/screw. For instance, a Grade 5 Hex Cap Screw should only utilize a Grade 5 hex nut

• Hex Cap Screws (also called hex head cap screws, hex bolt, or hex head bolt) Manufactured to ASME B18.2.1 and SAE J429 specifications
• Features a thick, hexagonal head with chamfered threads
• Washer face under the head to provide ample bearing surface when tightened with a wrench
• Made from medium carbon steel. You will notice that it’s hexagon head surface is smooth with no markings
• Tensile Strength: 120,000 psi 1/4 thru 1 inch diams, all lengths) - 105,000 psi. (1-1/8 thru 1.5 inch diams, all lengths)