5/8-11 x 4 Hex Cap Screw SS 18-8 (A2)

5/8-11 x 2 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (25)

7/8-9 x 3 Hex Cap Screw SS 316 (A4)

7/8-9 x 5 Flat Socket Cap Screw Alloy

1/4-28 x 5 Grade 5 Hex Cap Screw Plain Domestic USA (400)

9/16-18 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) 5/8-11 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA 5/8-11 x 4 Hex Cap9 16 18 x 1 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) . Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum