Specification Brand : Fafeicy BulletPoint1 : Steel threaded inserts are used in low strength materials such as aluminum and to avoid thread damage, achieve good connection performance, improve connection strength, and improve connection conditions. BulletPoint2 : It can prevent screw from getting loose,especially used for products requiring high coefficient of insurance. BulletPoint3 : Used for parts that requires frequent removing, it can greatly improve service life and wear-resistance of screw thread. BulletPoint4 : Because of a certain elasticity, thread insert can even the load distribution on each thread, eliminate pitch and tooth deviation between screw and screw hole, and absorb vibration, thus increasing the screw thread connection strength and fatigue resista BulletPoint5 : Easy to maintenance, install a thread insert into a damage screw hole, then the screw hole can be used as normal, in order to avoid workpiece loss. ExternallyAssignedProductIdentifier1 : 0000640422064 ExternallyAssignedProductIdentifier2 : 000640422064 ItemName : 100pcs M4 Stainless Steel SS304 Coiled Wire Helical Screw Thread Inserts for Low Strength Materials (M4*0.7 * 2.5D) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 6 centimeters ItemPackageDimensions_Width : 5 centimeters ItemTypeKeyword : threading-inserts Manufacturer : Fafeicy ModelName : Fafeicysq2o7zrnah-04 ModelNumber : Fafeicysq2o7zrnah-04 NumberOfItems : 1 PartNumber : Fafeicysq2o7zrnah-04 ProductDescription : Specification: Steel thread inserts can effectively improve screw connection, greatly improving the reliability. Used in all kinds of low strength materials, thread inserts can largely improve the wear performance of screw connection, and avoid thread damage. Features: Steel thread inserts used in low strength materials such as aluminum, , can avoid thread damage and get a good connection performance, to enhance connection strength and improve connection condition. Used for parts that requires frequent removing, it can greatly improve service life and wear-resistance of screw thread. Because of a certain elasticity, thread insert can even the load distribution on each thread, eliminate pitch and tooth deviation between screw and screw hole, and absorb vibration, thus increasing the screw thread connection strength and fatigue resistance. It can prevent screw from getting loose,especially used for products requiring high coefficient of insurance. Easy to maintenance, install a thread insert into a damage screw hole, then the screw hole can be used as normal, in order to avoid workpiece loss. Specification: Material: Stainless steel 304 Size (inner diameter*installed pitch*installed length) & Quantity(Optional): M4*0.7*1 D, 100pcs; M4*0.7*1.5 D, 100pcs; M4*0.7*2 D, 100pcs; M4*0.7*2.5 D, 100pcs; M4*0.7*3 D, 100pcs; Weight: 14g~40g / 0.5oz~1.4oz (approx.) Package list: 1 set * Threaded Inserts Note: Installed length= #D means # x diameter, for example, M4*0.7*1 D has installed length = 1D = 1 x 4 = 4mm.