Applications: the anchor is made of carbon steel and is galvanised. This anchor is designed for use in concrete, block and brick. Environment: the anchor is used in a dry environment. Head design: the anchor is a hex head and is designed to allow the head to sit on the surface of the element. Hole diameter/bit diameter. The anchor requires a 3/8 inch hole in the base material to be drilled (concrete, block, and brick). The hole should be drilled with carbide tipped bit that meets ANSI standards and used in a hammer drill. The diameter of the anchor is 3/8 inches. Anchor length: the length of the anchor 4 inches, minimum embedment. The minimum anchor embedding in the concrete is 1-1/4 inches. Therefore, the anchor must be installed so that a minimum of 1-1/4 inch of the dowel is embedded in the concrete. Maximum fixing thickness: the maximum thickness of the attachment part or the maximum thickness of the material is attached for an anchor, is 2-3/4 inches. This ensures that the minimum embedding of 1-1/4 inches are met. Fixture hole diameter of the hole in the device or material must be larger than the designated diameter of the dowel. The 3/8 inch diameter anchor requires the hole in the attachment to be 1/2 inch. the distance between the anchors, each anchor must be spaced at a minimum distance of 3-3/4 inches from each other when measured from centre to centre. Edge spacing. It is very important not to install the anchor closer than 1-7/8 inches from an unsupported edge of the concrete.