5/16-18 x 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (1950)

9/16-18 x 2 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (25)

Sulfur: Maximum 0

1-14 x 7 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (40)

1/4-28 x 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) 1 1/2-12 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA 5/16-18 x 1/2 Grade 51 4 28 x 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) . 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