There are two series for Anti-theft & anti- loose Nuts Device with ATDN series and ATDS series. All of them adopt innersprings and steel balls with harden quench and stainless material. It can be used to fix directly on bolts of the tower, not required to lengthen and adjust the original design for bolts and nuts.

       The series products of Anti-theft & Anti-loose nuts devices use ingenious conception, and have simple structure, stable and reliable performance in anti-release as well. The products have been detected by the China Electric Power Research Institute, and obtain the conclusion that the torsion moment of the anti-loose has been over the design requirement (Enclose: test report from the test organization). For the series products of SFGX are the subsidiary equipments designed for the galvanized standard bolts of the iron tower, it is not required to change the original design of the fasteners, and could be installed and used immediately in the new transmission line and the operating line, once and for all in the end.