Tensile strength on diameters 1/4 to 2 1/2 inches is a minimum of 150

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

All material is manufactured with rolled threads

3/4-10 x 12 A307 Grade A Carriage Bolt Zinc Plated

7/8-9 x 6 Grade 5 Hex Cap Screw Zinc Plated

1-8 x 9 Grade 8 Hex Cap Screw Yellow Zinc Plated 1-14 Grade 8 Hex Cap Screws Yellow Zinc Plated Tensile strength on diameters 1/41 8 x 9 Grade 8 Hex Cap Screw Yellow Zinc Plated . Grade 8 Hex Cap Screws are manufactured from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on diameters 1 4 to 2 1 2 inches is HRC