200pcs Metric Thread Repair Insert Assortment Set ThreadInserts M3-M12 Thread Insert Fasteners Hardware Screw Repair Tool Features: _x000D_ _x000D_ - This new type of helicoil thread repair kit is made of high quality stainless steel which is equipped with higher hardness than normal screws and they are solid and durable enough to provide repeated use and frequent disassembly _x000D_ _x000D_ - This kind of helicoil thread kit can make the load on the thread more uniform as it has a certain and strong elasticity. It can eliminate the screw and screw hole deviation between partition and tooth type, and it can also absorb vibration, thereby increasing the screw thread connection strength and fatigue resistance, so that it can greatly improve the service life of the thread _x000D_ _x000D_ - This thread repair set thread is a new type of fastening technology that can effectively improve the connection condition and greatly increase the reliability of the screw connection. And the locking type wire screw sleeve can lock the screw into the threaded hole, so that the screw is not loose when exposed to vibration, which is better than the normal locking _x000D_ _x000D_ -This helicoil thread insert has many applications in daily life. The thread inserts can be used to repair an insulated threaded hole, and it is mainly used in various low strength materials, which is helpful to improve the wear resistance of bolt connections and prevent damage to the thread. Especially for aircraft and others that require a high insurance coefficient _x000D_ _x000D_ Helicoil wire thread repair inserts can strengthen the connection strength and improve the connection condition, thus avoiding wire slip and false teeth, achieving excellent connection performance _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Specification: _x000D_ _x000D_ Material: stainless steel _x000D_ _x000D_ Quantity: 200 pieces _x000D_ _x000D_ Size: M2, M4, M5, M6, M8, M10, M12 _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Package includes: _x000D_ _x000D_ Size: (inner diameter x thread pitch x length), 2D = 2 x inner diameter _x000D_ _x000D_ 50 pieces M3x0.5x2D _x000D_ _x000D_ 40 pieces M4x0.7x2D _x000D_ _x000D_ 30 pieces M5x0.8x2D _x000D_ _x000D_ 30 pieces M6x1.0x2D _x000D_ _x000D_ 20 pieces M8x1.25x2D _x000D_ _x000D_ 20 pieces M10x1.5x2D _x000D_ _x000D_ 10 pieces M12x1.75x2D _x000D_