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

000 psi is required

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

3/4-10 x 10 Grade 5 Hex Cap Screw Zinc Plated

7/8-9 x 2 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated 3/4-10 A307 Grade A Carriage Bolts Zinc Plated Diameters over 1 1/2 inches7 8 9 x 2 1 4 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