5/8-11 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (65)

3 ga) for #14

1-8 x 4 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (10)

1/4-28 x 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (3300)

1/4-28 x 3 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (550) 1/2 Hex Lag Screws Zinc Plated 5/8-11 x 6 Grade 81 4 28 x 3 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (550) . 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