no pre-drilling is required - the anchor is inserted through the fixture and screwed in with an ordinary Phillips screwdriver

9/16-12 x 6 1/2 Socket Cap Screw Alloy

27/32 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank)

9/16-18 x 2 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (200)

engineered washer and LOK-Nut

1/2-20 x 7/8 Grade 5 Hex Cap Screw Plain Domestic USA (50) 5/8-18 Grade 8 Hex Cap Screws Plain - Domestic USA no pre-drilling is required -1 2 20 x 7 8 Grade 5 Hex Cap Screw Plain Domestic USA (50). 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