5/16-18 x 3 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (450)

3/8-16 x 1 Grade 8 Hex Cap Screw Plain Domestic USA (100)

1 1/4-7 x 5 Socket Cap Screw Alloy

1/2-13 x 4 Grade 8 Hex Cap Screw Plain Domestic USA (25)

3/8-16 x 1 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (900) Slotted Hex Nuts 5/16-18 x 3 1/4 Grade3 8 16 x 1 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (900) . 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