2 3/4-4 A563 Grade A Heavy Hex Nut Plain

7 for torsional strength and drill speed

1/2-13 x 2 1/4 Hex Sleeve Anchor Zinc Plated (50)

5/16-18 x 6 Grade 5 Hex Cap Screw Plain Domestic USA (50)

1/4-20 x 7 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (10) 1/2-13 A325 Type 1 Heavy Hex Bolts Plain 2 3/4-4 A563 Grade A1 4 20 x 7 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