Hex Bolts Grade 5 Zinc Plated 3/8 -24 x 5 1/2 (Quantity: 50 pcs) Partially Threaded UNF Thread (Thread 3/8 ) x (Length: 5 1/2 )

Grade 5 Steel with a Zinc Finish and manufactured to ASME B18.2.1 Zinc-plated steel screws to resist corrosion in wet environments Meets ASME B18.2.1 and SAE J429 specifications These are PARTIALLY Threaded Bolts with a minium of 1 inches of thread Head Height: 15/64 in. / Width Across the Flats: 9/16 in.