Through the wall bolt >> The utility model belongs to the auxiliary parts of the construction industry. This scheme was specifically proposed to overcome the problems of the time-consuming and labor-intensive operation, waste of materials, and insufficient strength of the conventional integral-type wall bolts. The bolt is made into three sections, rolling threads are formed on the surface, coupled with a coupling nut, a waterproof plate is welded in the middle of the middle bolt, and a fastening nut, a backing plate and a waterproof conical plug are arranged on the bolts at both ends. When used, the connected wall bolts are embedded in the wall, and the bolts at both ends are detached after use to be reused. The product has the advantages of time and labor saving, good rigidity and strength, reliable use, and material saving, which can obviously reduce the cost. specialty. Article reproduced from;
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