These percentages exist in 303

9/16-18 x 1 Socket Set Screw Cup Point Alloy

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3/4 L9 SAE Tension Flatwasher Yellow Zinc Plated Domestic USA (40)

3/8-16 x 3 Hex Sleeve-All™ 304 SS (50)

9/16-18 x 6 Grade 5 Hex Cap Screw Plain Domestic USA (25) 3/8-16 Grade 8 Hex Cap Screws Plain - Domestic USA These percentages exist in 3039 16 18 x 6 Grade 5 Hex Cap Screw Plain 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 of 120,000