1/4-20 x 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

Square drive prevents cam out and stripping

For diameters under 1 ½ inches

1/2-20 x 6 Hex Cap Screw SS 316 (A4)

7/16-14 x 5 Grade 5 Hex Cap Screw Plain Domestic USA (150) 6" Aircraft Bits - Wire Gauge 1/4-20 x 3 1/2 Grade7 16 14 x 5 Grade 5 Hex Cap Screw Plain Domestic USA (150). 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