5/8-11 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (25)

3/16 x 4 Mushroom Spike Zinc Plated (100)

7/16 Heavy Duty Drill Bit - Stubby Length

3/8-16 x 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100)

1/2-13 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50) Finished Hex Nuts 18-8 Stainless Steel 5/8-11 x 6 Grade 81 2 13 x 1 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