Description: _x000D_ These 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_ These self tapping thread inserts can be installed directly and do not need you to tap a thread first._x000D_ _x000D_ They are 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_ 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_ Specifications: _x000D_ Material: Stainless steel SUS303 _x000D_ Inner Thread Size: M3(diameter) x 0.5(pitch) _x000D_ Length: 6mm _x000D_ Outer Thread Size: M5(diameter) x 0.5(pitch) _x000D_ Drilling Diameter: 4.5~4.6mm(plastic); 4.6~4.7mm(aluminum alloy); 4.7~4.8mm(cast iron) _x000D_ Min. Drilling Depth: 8mm_x000D_ _x000D_ Quantity: 20pcs _x000D_ Weight: 9g(approx.) _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 20 x Threaded Inserts