Mechanical Properties:

5/16-18 x 7/8 Grade 8 Hex Cap Screw Plain Domestic USA (1500)

Medium degree of corrosion resistance

powder-coated finish – painted heads blend with decking material

3/8-24 x 1 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (800)

9/16-12 x 3 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (125) 5/16-18 Grade 5 Hex Cap Screws Plain - Domestic USA Mechanical Properties:9 16 12 x 3 1 2 Grade 5 Hex Cap Screw Plain Domestic USA (125). 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