On diameters over 1 inch to 1 1/2 hardness will range from HRC 19-30

1-14 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated

000 psi and for diameters over 1 inch to 1 1/2

Hot-Dip Galvanized material will meet or exceed ASTM A153

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

1/2-13 x 12 Grade 5 Hex Cap Screw Zinc Plated 1-14 Grade 5 Hex Cap Screws Zinc Plated On diameters over 1 inch1 2 13 x 12 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