Helicoil is a new internal thread of fastener. It is made of high strength, precision, corrosion resistant and diamond wire. The CL-coil looks like spring, when it is assembled in matrix thread, its internal surface to be the standard thread. If CL-coil is assembled with Screw, it could enhance the connection strength and abrasion resistant, especially in AL, MG, Cast Iron and other low strength materials.

     CL-hecoil also could 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.

     CL-helicoil prevents the thread rusting, trip with perfect corrosion, high heat and abrasion resistant in many kinds of environments. CL-coil also could repair the internal thread.

     CL-hecoil Precision Type: 6H, 5H, and 4H.