TOP-LOCK® washers’ advantages ◆Prevent bolt loosening caused by vibrations ,avoid some related problems caused by fasteners loose. ◆Do not need special installation tool, easy to install and disassemble . ◆Locking function is not affected by lubricating oil. ◆Temperature variation will not make fasteners loose . ◆Excellent durability. ◆Reusable without loss of performance . ◆Can use high/low load locking fixed components ◆Without Cr6 with surface treatment, there would be no hydrogen embrittlement dangerous situation. ◆Two big helical surface relative agglutination in pairs, the purpose is easy to install the locking system.