Grade 5 Hex Cap Screws

Grade 5 hex cap screws are the everyday workhorse for automotive, machinery and equipment assembly, where a plain Grade 2 bolt is not strong enough. Each screw is made to SAE J429 Grade 5 from medium carbon steel that is quenched and tempered for added strength and toughness. You can identify Grade 5 by the 3 radial lines on the hex head. Browse coarse (UNC) and fine (UNF) threads in full and partial thread lengths, with plain, zinc, yellow zinc and cadmium yellow finishes. Not sure whether you need Grade 5 or Grade 8? Read our Grade 5 vs Grade 8 comparison. To get the right tool, check the wrench and socket size chart. For tightening guidance, see the Grade 5 torque chart or the full bolt torque chart. Shop by finish: zinc, plain, yellow zinc or cadmium yellow, or browse all hex cap screws.