A307 Grade A Carriage Bolts are manufactured from low carbon steel to meet or exceed ASTM A307 Grade A

1-14 x 2 1/2 Grade 5 Hex Cap Screw Zinc Plated

Zinc plated material meets or exceeds ASTM F1941

1-8 x 5 Grade 5 Hex Cap Screw Zinc Plated

3/4-16 x 5 Grade 5 Hex Cap Screw Zinc Plated

3/4-10 x 9 Grade 5 Hex Cap Screw Zinc Plated 1-14 Grade 5 Hex Cap Screws Zinc Plated A307 Grade A Carriage Bolts3 4 10 x 9 Grade 5 Hex Cap Screw Zinc Plated . Grade 5 Hex Cap Screws are manufactured from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Zinc plated material meets or exceeds ASTM F1941. 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