1/2 x 4 Mushroom Spike Zinc Plated (25)

1-14 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

5/16-18 x 4 1/2 Hex Tap Bolt Silicon Bronze

3/4-16 x 4 Socket Cap Screw Alloy

1-8 x 2 3/4 Hex Cap Screw SS 316 (A4)

7/16-14 x 5 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (150) 7/8-14 Socket Set Screws Cup Point Alloy 1/2 x 4 Mushroom Spike7 16 14 x 5 Grade 5 Hex Cap Screw Zinc Plated 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