Function: the helicoils can install on the screws, and won't move with the screw, with the help of wrench can put the stainless steel helicoil on the screw. Increase the bearing capacity of the threaded connection and fatigue strength. Durable, spiral surface hardness can reach HRC43 ~ 50, (precision can be up to 2 ~ 4 microns), can turn the screws on the result of the friction torque by 90%. Heat-resisting: steel wire at high temperature can stop a screw thread connection card dead or scratches. Corrosion resistance. Material saving. Can maximize more flexible design, broaden the scope of design model selection, simplify the structure of design and assembly. Widely used in aviation, spaceflight, locomotive, automobile, machinery, instrument, mold, construction, furniture, and other fields. The specific scope of application is as follows: Can be used for aluminum and magnesium, such as wood, plastic, rubber, and easy to deformation of low strength and soft materials, avoid slippery silk, silk, the phenomenon such as wrong tooth, increase the connection strength. Can be used to require a strong connection and cannot increase the screw hole diameter of thin body parts, increase the force area. FILTEC sheath installation tools. Can be used in ceramic, plastic, glass and other hard brittle fragile connection fastening, improve the connection conditions, effectively prevent fracture phenomenon. Often can be used to turn the screw hole, prevent thread wear and prolong its service life. Used for chemical machinery, ships, vehicles, mining machinery and other equipment, to prevent rust corrosion to occur in the bolts in the damp environment for a long time "phenomenon, disassembly is convenient for maintenance.Can be used in aviation, aerospace, military and other occasions with higher requirements for safety coefficient, prevent loose bolts. Can be used in precision instruments, meters and expensive equipment, prevent equipment damage caused by the loose bolts. Can be used for a screw hole damage and to make the overall scrap machinery, such as engine block, textile machinery, all kinds of aluminum parts, lathe knife, etc.