1/4 x 4 Mushroom Spike Zinc Plated (100)

1-14 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (10)

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

1 1/8-12 Nylon Insert Locknut Zinc Plated

9/16-18 x 5 Grade 5 Hex Cap Screw Plain Domestic USA (100) Stubby Drill Bits - Fractional 1/4 x 4 Mushroom Spike9 16 18 x 5 Grade 5 Hex Cap Screw Plain Domestic USA (100). 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 of 120,000