5/16-18 x 2 3/4 Grade 8 Hex Cap Screw Plain Domestic USA (550)

Typical hardness on diameters of 1/4 to 1 inch is HRC 25-34

3/16 x 1 3/4 Phillips Flat Hi-Low Thread Concrete Screws Blue Ceramic Coated

3/16 x 2 Powers Round Toggle Bolt Zinc Plated (50)

7/16-14 x 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (400) F436 Flat Washers Hot Dipped Galvanized 5/16-18 x 2 3/4 Grade7 16 14 x 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (400) . 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