Machine screw thread

1/2-20 x 1 3/4 Grade 8 Hex Cap Screw Plain Domestic USA (50)

9/16-18 x 4 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (100)

1 3/8-6 x 10 Socket Cap Screw Alloy

3/4-16 x 3 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25) 1-14 Grade 5 Hex Cap Screws Zinc Plated Machine screw thread3 4 16 x 3 Grade 8 Hex Cap Screw Yellow Zinc Plated 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