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 resistance performance of screw connection, and avoid thread damage. _x000D__x000D__x000D_Features: _x000D_Steel thread inserts used in low strength materials such as aluminum, magnesium, can avoid thread damage and get a good connection performance, to enhance connection strength and improve connection condition._x000D__x000D_Used for parts that requires frequent removing, it can greatly improve service life and wear-resistance of screw thread. _x000D_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. _x000D_It can prevent screw from getting loose,especially used for products requiring high coefficient of insurance. _x000D_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. _x000D__x000D_Specification: _x000D_Material: Stainless steel 304 _x000D_Size (inner diameter*installed pitch*installed length) & Quantity(Optional): _x000D_M4*0.7*1 D, 100pcs;_x000D__x000D_M4*0.7*1.5 D, 100pcs;_x000D__x000D_M4*0.7*2 D, 100pcs;_x000D__x000D_M4*0.7*2.5 D, 100pcs; _x000D__x000D_M4*0.7*3 D, 100pcs; _x000D_Weight: 14g~40g / 0.5oz~1.4oz (approx.) _x000D__x000D__x000D_Package list: _x000D_1 set * Threaded Inserts _x000D__x000D__x000D_Note: Installed length= #D means # x diameter, for example, M4*0.7*1 D has installed length = 1D = 1 x 4 = 4mm.