5/16-24 x 5 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (50)

5/16-18 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (100)

3/8-24 x 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100)

61/64 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank)

9/16-12 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (75) 5/8-18 Grade 5 Hex Cap Screws Plain - Domestic USA 5/16-24 x 5 1/2 Grade9 16 12 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (75) . Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum of