5/8-11 x 12 A307 Grade A Carriage Bolt Zinc Plated

1 1/8-7 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (12)

7/16-14 x 2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

7/16-20 x 5 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (150)

7/16-20 x 3 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (25)

1/2-20 x 2 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (225) 1/2 Hex Lag Screws Zinc Plated 5/8-11 x 12 A307 Grade1 2 20 x 2 1 4 Grade 5 Hex Cap Screw Plain Domestic USA (225). 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