5/16-18 x 4 Grade 5 Hex Cap Screw Plain Domestic USA (400)

00 x 160 Flat Socket Cap Screw 12

3/4 x 24 Hex Lag Screw Hot Dipped Galvanized

1/2-13 x 2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

1/2-13 x 7 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (80) 1/2-13 Grade 5 Hex Cap Screws Zinc Plated - Domestic USA 5/16-18 x 4 Grade 51 2 13 x 7 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (80) . 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