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Purchase Anchors Hammer Drills The term hammer drill refers to a drill that has a movement that goes up and down in a chuck and has a rotation motion- the bit turns in the chuck. There are many manufacturers of hammer drills. There are two basic types of hammer drills. One type is the hammer drill that has a standard Jacobs style chuck i.e. a chuck where the chuck key is used to tighten the chuck against the bit. The second type is the keyless chuck that does not require a chuck …

Purchase Anchors Rule: Concrete fasteners should not be set closer than 10-anchor diameters from each other. Explanation:  Mechanical type concrete anchors exert outward pressure against the wall of the hole in concrete. This pressure goes out and up the length of the anchor forming what is commonly called a cone of concrete, as it is cone-shaped in appearance. Since anchors derive their holding values from the base material, this cone-shaped area is a picture of the holding …

Purchase Anchors How Concrete Anchors Work Concrete fasteners are referred to as expansion type concrete fasteners. They derive their holding values from friction. The friction is obtained by the outward pressure created by expanding the anchor against the walls of the hole that is drilled in the base material. All expansion anchors work on this principle. The only one that does not is the concrete screw. The concrete screw or Tapcon® actually taps or cuts threads into the base materia …

Purchase Anchors Fastening to concrete, brick or block is different than fastening to wood or sheet metal. Screws are used when fastening to wood or holding two pieces of metal together. Nut and bolt can also be used for these purposes. Concrete, brick or block are basically solid material that is very hard because only one surface is available- it is not 3-dimensional for fastener used. Fastening to concrete, brick or block must be done to the surface and the holding values are wholly …

Purchase Anchors Below is a table of the generic terms for each mechanical concrete fastener and the corresponding brand names (organized by the manufacturer selling fasteners in the United States).         Product Concrete Fasteners, Inc. Hilti Simpson Powers Red Head Wedge Anchor Wedge Anchor Kwik Bolt Wedge-All Power-Stud …