A2 A4 Stainless Steel Expansion Sleeve Anchor

The expansion bolt is composed of countersunk bolt, expansion pipe, Flat Washer, Spring Washer and hexagon nut. The fixation principle of expansion screw: the fixation of expansion screw is to make use of the inclination to promote the expansion to produce friction and binding force, so as to achieve the fixation effect. One end of the screw is threaded and the other end is tapered. There are several incisions in the half of the cylinder, which are inserted into the holes made on the wall, and then the nut is locked. The nut pulls the screw outward to pull the taper into the cylinder. The cylinder is expanded and then firmly fixed on the wall. It is generally used for fastening the fence, awning, air conditioner, etc. on cement, brick and other materials. But its fixation is not very reliable, if the load has a large vibration, it may be loose, so it is not recommended for the installation of ceiling fans. The principle of expansion bolt is to drive the expansion bolt into the hole on the ground or wall, and then tighten the nut on the expansion bolt with a wrench. The bolt goes out, but the outer metal sleeve does not move. Therefore, the big end under the bolt expands the metal sleeve to make it full of the whole hole. At this time, the expansion bolt cannot be pulled out.

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