Applications the anchor is made from carbon steel, and is hot-dipped galvanized. This anchor is designed for use in concrete only, and should never be used in block or brick base material. Environment the anchor is designed for use in a damp environment. Hole diameter/bit diameter the anchor requires a 1/2in hole to be drilled in the base material concrete only. The hole should be drilled with carbide tipped bit that meets ansi standards and used in a hammer drill. Diameter of anchor the diameter of the anchor is 1/2in. Length anchor the length of the anchor is 5-1/2in thread length the length of the threads on the anchor is 4in in length. Minimum embedment the minimum anchor embedment into the concrete is 2-1/4in. Therefore, the anchor must be installed so that a minimum of 2-1/4in of the anchor is embedded into the concrete. Maximum fixture thickness the maximum fixture thickness or the maximum thickness of the material being fastened for a anchor is 2-3/4in. This will ensure that the minimum embedment of 2-1/4in will be met. Fixture hole diameter the hole in the fixture or material being fastened must be larger than the designated diameter of the anchor. The 1/2in diameter anchor requires the hole in the fixture to be 5/8in. Spacing between anchors each anchor must be spaced a minimum distance of 5in from each other when measured center to center. Edge distance it is very important not to install the anchor any closer than 2-1/2in from an unsupported edge of the concrete.