1/4-20 x 3 1/4 Hex Head Cap Screws, Steel Grade 5, Plain Finish (Quantity: 600 pcs) - Coarse Thread UNC, Partially Threaded, 3 1/4 inch, Thread 1/4 inch

Hex Cap Screws (also called hex head cap screws, hex bolt, or hex head bolt) Manufactured to ASME B 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: psi 1/4 thru 1 inch diams, all lengths) - psi. ( thru 1.5 inch diams, all lengths)