Back-out resistance: once driven home

1 1/2-12 x 12 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (3)

1-14 x 8 Grade 8 Hex Cap Screw Yellow Zinc Plated

27/64 Heavy Duty Jobber Drill Bit

5/8-11 x 1 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (300)

1-8 x 4 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (10) 18" Ship Augers Back-out resistance: once driven home1 8 x 4 1 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (10) . 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