HeadLOK® offers higher design shear than 3/8" lag screws and no pre-drilling is needed

#3 square drive

7/8-9 x 2 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (15)

" locking the anchor on the wall

3/8-24 x 2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (600)

5/16-18 x 1 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (100) 3/4-16 Grade 8 Hex Cap Screws Plain - Domestic USA HeadLOK® offers higher design shear5 16 18 x 1 1 2 Grade 5 Hex Cap Screw Plain 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 of