1-8 x 2 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (10)

3/8-24 x 1 1/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (900)

7/16-14 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (25)

3/8-16 x 1 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (675)

5/16-18 x 1 3/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (1250)

5/16-18 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50) Flat Washers 18-8 Stainless Steel 1-8 x 2 1/4 Grade5 16 18 x 4 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50) . 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