5/8-18 x 8 Socket Cap Screw Alloy

1 1/8-12 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (36)

5 x 90 Hex Cap Screw 8

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3/4-16 x 3 1/2 Gr

5/16-18 x 3 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50) 5/8-11 Grade 8 Hex Cap Screws Plain - Domestic USA 5/8-18 x 8 Socket Cap5 16 18 x 3 3 4 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