1/4-20 x 1 3/4 Grade 8 Hex Cap Screw Plain Domestic USA (1400)

5/16-18 x 3 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (500)

1 3/8-6 x 10 Socket Cap Screw Alloy

3/8-16 x 4 Grade 8 Hex Cap Screw Plain Domestic USA (250)

1/4-28 x 1 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (1600)

3/8-16 x 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) 18" Aircraft Bits - Fractional 1/4-20 x 1 3/4 Grade3 8 16 x 3 4 Grade 5 Hex Cap Screw Zinc Plated 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