Grade 8 Hex Cap Screws are manufactured from medium carbon alloy steel

3/4-16 x 6 Grade 5 Hex Cap Screw Zinc Plated

7/8-9 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated

7/8-14 x 3 1/2 Grade 5 Hex Cap Screw Zinc Plated

Diameters over 1 1/2 inches meet or exceed ASTM A354 Grade BD

7/8-9 x 7 Grade 5 Hex Cap Screw Zinc Plated 1-14 Grade 5 Hex Cap Screws Zinc Plated Grade 8 Hex Cap Screws7 8 9 x 7 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