Nuts are manufactured to meet a proof load of 90

Diameters over 2 1/2 inches have a meet a minimum of 140

5/8-18 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (600)

1/2 x 5 Titen HD Concrete Anchor Mech Galvanized (20)

3/8-24 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

9/16-18 x 3 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (25) 9/16-18 Hex Cap Screws 18-8 Stainless Steel Nuts are manufactured to meet9 16 18 x 3 1 2 Grade 8 Hex Cap Screw Plain Domestic USA (25). 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 diameters 1 4