5/8-11 x 2 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (125)

5/16-18 x 1 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (1100)

1/2-13 x 9 Grade 5 Hex Cap Screw Zinc Plated

1/2-13 x 3 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (175)

Low profile head diameter is twice the rivet body diameter

1/2-13 x 6 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) 1-8 Grade 5 Hex Cap Screws Zinc Plated - Domestic USA 5/8-11 x 2 1/2 Grade1 2 13 x 6 1 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) . Grade 8 Hex Cap Screws are manufactured in the USA 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