5/16-24 x 3 1/2 Hex Head Cap Screws, Steel Grade 5, Plain Finish (Quantity: 50 pcs) - Fine Thread UNF, Partially Threaded, Length: 3 1/2 Inch, Thread Size: 5/16 Inch

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 its 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)