Horiznext 1/2"x 7" inch Stainless Steel Standard Strong Wedge Anchor, Fasteners for Concrete (4 pcs)

* Made of stainless steel that resists pressure. Hole Diameter/Bit Diameter: The anchor requires a 1/2" 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. Minimum Embedment?The minimum anchor embedment into the concrete is 2-1/4". Therefore, the anchor must be installed so that a minimum of 2-1/4". 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 4-1/4". This will ensure that the minimum embedment of 2-1/4" will be met. Fixture Hole Diameter: The 1/2" diameter anchor requires the hole in the fixture to be 5/8". Torque Value: between 50 - 60 ft./lbs. Spacing between Anchors: a minimum distance of 5" Edge Distance?2-1/2" * Designed for use in Concrete only, and should never be used in block or brick base material. * Used in wall, door, concrete, masonry cement, fence, industrial, house and garden etc. Material: stainless steel Package Included:4 pcs.