1/4-28 x 5 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (400)

A new plating that is 7x more corrosion resistant than standard zinc plating

Zinc plated Socket Head Cap Screws from Brighton Best

9/16 x 12 High Speed Long Boy (1/2" Shank)

50 x 45 Socket Set Screw Cup Point DIN 916 Black Oxide Alloy

7/16-20 x 7/8 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (700) 9/16-18 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA 1/4-28 x 5 1/2 Grade7 16 20 x 7 8 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (700) . 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