As the anchor is driven into the hole

5/16-18 x 2 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (600)

1-8 x 18 Socket Cap Screw Alloy

5/16-18 x 3 Grade 8 Hex Cap Screw Plain Domestic USA (100)

5/16-24 x 5 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (250)

9/16-12 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) 1-14 Socket Set Screws Cup Point Alloy As the anchor is driven9 16 12 x 4 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) . 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