English: Descriptions: Metal screw sleeve is a new type of fastening technology that can effectively improve the connection condition and greatly increase the reliability of screw connection, widely used in machined fasteners of aircraft, automobiles. Features: Used in various low-strength materials, which can improve the wear resistance of bolt connections and prevent thread damage. Due to a certain elasticity, it can make the load on the thread more uniform, eliminate the gap between the screw and the screw hole between the pitch and tooth type, and can absorb vibration, thereby increasing the strength of the screw thread connection and fatigue resistance. The locking-type metal screw sleeve can lock the screw in the threaded hole, so that the screw will not loosen when subjected to shock vibration, which is better than the ordinary locking device. The hardness of the metal screw is higher than that of the screw, so it has little wear relative to the screw and can be used repeatedly. Strengthen the connection strength and improve the connection condition, avoid wire slippage, bad tooth phenomenon, and achieve excellent connection performance. Used for frequent disassembly, it can greatly improve the service life of the thread. Anti-loosening. Especially for airplanes and other products that require high insurance coefficients. Easy to maintain. The damaged screw holes should be placed in the metal screw sleeve, which can be reused to avoid the possibility of damaging the part. Specifications: Material: 304 Stainless Steel Quantity: 100 Weight: 62g Size: M6 x 1.0 x 1.5 D (inner diameter x thread pitch x length), 1.5D = 1.5 x inner diameter Package included: 100 x Metal Screw Sleeve