Bolt and nut with Spring and Balls is a kind of product which company combines numerous product feature of anti-theft nut in existence, through continuous improvement , search and developes new-style anti-theft nut. This product has received national utility model patent, the patent number is ZL200720090142.7, the main specifications are QLCN3-16, QLCN3-18, QLCN-20, QLCN3-22, QLCN3-24. The product can wide applicate to anti-theft fasteners or components in the field facilities such as electric power system, correspondence system and highway. It is a good anti-theft function, convenient installation and low cost anti-theft nut, and the nut also can be made according the demands of customer.

     The structure and function:

     1. Unique shape. The appearance of the whole product is circular, no point of being forced, thus to avoid being damaged.

     2. The anti-theft structure is all surrounded embedded type. The anti-theft principles design of this product is reasonable and scientific, work on the main body directly, and combines with bolts tightly. So, the nut can’t be directly damaged by the force, then effectively achieves the anti-theft function.
     3. External ring. The product is added a ring on the outside of the noumenon, after the installation is completed, the outer ring can free rotation on the outside of the noumenon. When it is forced, the outer ring can effectively resolve the external force damage on the noumenon,and play a "protective wall" role to the noumenon.

     4. No environmental pollution. The product does not exist derivatives after the installation , it is benefit to protect the construction environment.

     Technical requirements:

     1. The noumenon of this product is national standard nuts, and the material is common carbon steel, whose number is Q235A, mechanical performance can up to grade 4.8.

     2. The surface has been processed by multi-alloy infiltration techniques, and it’s antirot function is better than other treatment technique. The time of anti-theft can up to 25-30 years.

     3. Being installed conveniently and strong commonality.

The Special Tools, every 400 pieces bolt and nut for one tool