Free-Running inserts

Insert Thread also can improve threads stress state and to be spring connection, remove the errors of pitch and thread angle, pretectthe thread avoiding to be broken, and extend working time.
It prevents the thread rusting, stucking, trip with perfect corrosion, high heat and abrasion resistant in many kinds environments, it also can repair the interal thread
Our precision type: 6H, 5H, 4H
Free-Running inserts