5/16-18 x 2 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (100)

1-8 x 4 1/2 Socket Cap Screw 18-8 (A2) Stainless Steel

5/8-11 x 3 1/4 Hex Cap Screw SS 316 (A4)

1 1/4-7 x 3 1/2 Socket Set Screw Cup Point Alloy

3/4-10 x 2 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (90) 1 1/2-6 Socket Set Screws Cup Point Alloy 5/16-18 x 2 1/4 Grade3 4 10 x 2 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (90) . 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