Grade A Heavy Hex Nuts are manufactured from low carbon steel

3/16 x 3 Powers Combo Mushroom Toggle Bolt Zinc Plated (50)

1/2-13 x 1 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (450)

5/16-24 x 1 1/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100)

1 1/4-7 x 1 Socket Set Screw Cup Point Alloy

5/16-18 x 3 3/4 Grade 5 Hex Cap Screw Plain Domestic USA (400) Nail-In Anchors Nylon Grade A Heavy Hex Nuts5 16 18 x 3 3 4 Grade 5 Hex Cap Screw Plain Domestic USA (400). 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