When activated with a screw

1/4-28 x 3 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50)

3/8-16 x 2 3/4 Grade 5 Hex Cap Screw Plain Domestic USA (400)

3/4-16 x 1 3/4 Socket Cap Screw Alloy

7/8-9 x 5 Grade 8 Hex Cap Screw Plain Domestic USA (15)

3/4-16 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (5) 3/4-10 Grade 5 Hex Cap Screws Zinc Plated When activated with a screw3 4 16 x 1 1 2 Grade 5 Hex Cap Screw Zinc Plated 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