5/16-18 x 3 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (450)

7/16-14 x 4 Grade 5 Hex Cap Screw Plain Domestic USA (25)

1/2-20 x 1 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

1/4-20 x 3 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

1-8 x 4 1/2 Socket Cap Screw Alloy

7/8-9 x 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (15) Reduced Shank Drill Bits - 3/8 Shank 5/16-18 x 3 1/2 Grade7 8 9 x 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (15) . 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