5/16-18 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

1/2-20 x 1 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (400)

1/2-13 x 6 Hex Cap Screw SS 316 (A4)

7/16 x 6 High Speed Aircraft Bit

1/2-13 x 1 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (375) Phillips Trim-Head Sharp Point Drywall Screws Black Phosphate 5/16-18 x 4 L9 Hex1 2 13 x 1 1 4 Grade 8 Hex Cap Screw Plain Domestic USA (375). 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