Wedge Anchor

1) Wedge anchor2) Surface treatment for carbon steel including white zinc plated, yellow zinc plated, H. D. G3) Material including carbon steel, stainless steel, brass4) Small box packing5) Dia. Available from M3 to M20, length from 30 to 200mm. Introuduce: Wedge anchors, also known as expansion bolts and expansion anchors, secure themselves using a mechanical wedging effect at the end of the fastener. There are three basic styles of wedge anchors: Fully threaded, partial threaded and the full-bodied wedge anchor. As shown in the figure, tightening the bolt results in a wedge being driven up against a sleeve. This jams the end of the bolt, and provides the strength. Many different manufacturers provide a variation on this theme, usually depending on the condition of the concrete, and the type of load. If a mechanical anchor fails, it is usually in the form of pulling out a wedge of concrete, and for this reason, proper design looks at the depth of embedment and ensures that the bolts are not spaced too closely.