5/16-24 x 1 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (1000)

They are widely used as plug gages

1/2 x 18 High Speed Long Boy

7/16-20 x 3 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (25)

7/8-14 x 2 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (60) Round Split Drive Anchors Zinc Plated 5/16-24 x 1 1/2 Grade7 8 14 x 2 3 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (60) . 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