5/8-18 x 3 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100)

1/2 L9 SAE Tension Flatwasher Yellow Zinc Plated Domestic USA (50)

9/16-12 x 4 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25)

#40 Heavy Duty Jobber Drill Bit

5/8-11 x 7 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (25)

9/16-12 x 2 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (175) L9 USS Tension Flatwashers Yellow Zinc Plated - Domestic USA 5/8-18 x 3 1/2 Grade9 16 12 x 2 1 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (175) . 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