9/16-18 x 4 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (100)

3/8-16 x 2 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (400)

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

1/4-20 x 3 Grade 5 Hex Cap Screw Plain Domestic USA (750)

1-8 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (10) 1/2 Hex Lag Screws 18-8 Stainless Steel 9/16-18 x 4 1/2 Grade1 8 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (10) . 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