High precison Metric M20 fasterners threaded inserts

Advantages •Wear resistance •Corrosion resistance •Heat resistance •Material saving •Can be customized if necessary 1). it could enhance the connection strength and abrasion resistant, especially in AL, MG, Cast Iron and other low strength materials. 1).improve thread's stress state and to be spring connection, remove the errors of pitch and thread angle, protect the thread avoiding to be broken, and extend working time. 3). prevents the thread rusting, trip with perfect corrosion, high heat and abrasion resistant in many kinds of environments,repair the internal thread.