The Drive® anchor is a one piece

1/2 x 3 1/2 Mushroom Spike Zinc Plated (50)

1 1/4-7 x 8 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (18)

7/16-20 x 3 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (25)

1/2-13 x 2 Grade 5 Hex Cap Screw Plain Domestic USA (250) 5/16-18 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA The Drive® anchor is a1 2 13 x 2 Grade 5 Hex Cap Screw Plain Domestic USA (250). 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 120,000