It adopts the most suitable steel for domestically produced taps, and is carefully ground after many times of is other vacuum heat treatment. The technology used is suitable for processing most alloys and steels. It is used for hand use, drilling machines, lathes, white moving tapping machines, etc. Extend the service life: Because the wire thread insert is made of stainless steel, it has high hardness, which increases the life of the softer base thread by tens to hundreds of times; increases its strength and avoids the occurrence of tripping and random buckling. Increase connection strength: It can be used for soft low-strength alloy materials such as aluminum and magnesium, wood, plastic, rubber and other easily deformable low-strength materials to avoid slippage and wrong teeth. Improve connection conditions: increase the load-bearing capacity and fatigue strength of threaded connections: the use of wire threaded sleeves can eliminate the pitch and tooth profile deviation between the screw and the screw hole, so that the load is evenly distributed, thereby improving the load-bearing capacity and fatigue resistance of the threaded connection strength. It can be used for the connection and fastening of hard, brittle and fragile materials such as ceramics, bakelite, and glass. Effectively prevent fragmentation.