Tailless threaded insert

The tailless threaded insert is also known as NO tail sleeve,and no tang bushing.The tailless threaded insert is the same as the ordinary wire threaded insert.It is a high-end threaded fastener.It is made of high-precision and corrosion-resistant stainless steel raw wire which is rolled into a diamond shape and then rolling.It is shaped like a spring and is installed in a specific threaded hole of the body.Its inner surface forms a standard thread.When it is matched with a screw(bolt),the threaded joint strength and wear resistance can be significantly improved.Especially in low-strength materials such as Aluminum,Magnesium,Castings,and Plastics.At the same time,the force of the thread is improved,the threaded connection is formed into an elastic connection,the pitch and the half-angle error between the inner and outer threads are eliminated,the load on the thread is evenly distributed,the base thread is protected from being damaged,and extended using time.The tailless threaded insert has excellent corrosion resistance,high temperature resistance and wear resistance,ensuring suitability in various environments,preventing thread rust,jamming,tripping.

Advantages of tailless insert

The tailless threaded insert contains all the advantages of the wire insert：

1.Enhance the bearing capacity and anti fatigue strength of the threaded connection, so that an elastic connection is formed between the screw and the bottom hole of the internal thread of the screw sleeve, thus effectively eliminating the thread pitch and tooth profile half angle errors between the internal and external threads, making the load on each turn of the thread evenly distributed in the specified length, thus improving the strength of the internal thread and reducing vibration, so as to improve the thread connection capacity and anti fatigue degree of the parts.

2.Abrasion resistance:The tailless insert is wound with hard cold rolled stainless steel wire. The hardness of the spinning surface can reach HRC43~50, and the mirror like surface (accuracy can reach 2~4 μ m) The friction and wear are reduced, and the torque generated by friction on the screw can be reduced by 90%, so that a larger tightening torque and screw tension can be obtained with a smaller tightening torque to prevent the screw from loosening, and the screws of various materials and grades are in the best use state.

3.Corrosion resistance：Corrosion resistance The excellent corrosion resistance of stainless steel insert ensures its applicability in most materials and under normal environmental conditions, so that the assembly using the insert will not be rusted or stuck.

4.Material saving:Compared with internal threads without inserts, under the same strength condition, after using inserts, in order to make the best use of yield limit, screws with smaller size and higher strength can be selected, so as to save materials, reduce weight and reduce volume.

5.It can maximize the design flexibility, broaden the scope of design and type selection, and simplify the design structure and assembly. For example, it can replace the bolt and nut connection mode to make it simpler.

Difference between tailless insert and steel wire insert

1.The tailless insert does not have a mounting handle, so there is no directional choice during installation, and it can be installed in both directions. The tailless insert can only be installed in one direction because it has a mounting handle. The installation efficiency of tailless insert is greatly improved by single installation.

2.The tailless insert has no mounting handle. After screwing the tailless insert into the threaded hole, the installation has been completed. After the wire thread insert is screwed into the threaded hole, the tail handle needs to be broken and cleaned out. Especially, it is very difficult to clean the installation handle, which takes time and effort. In addition, there are worries about cleaning. Choosing tailless insert can save cost and improve efficiency, which is your right choice.

Material and production standard of tailless insert

Material used for tailless insert：Stainless steel 304、Stainless steel 321、Special customized material X-750

The production standard adopts the size required by the production standard of steel wire insert.

Classification and customization of tailless inserts.

Tailless insert is divided into common type and locking type

Ordinary type：Common types

Locking type：The locking type thread has one or more turns of five side or six side coils, which can greatly improve the locking force and prevent vibration from falling off.

In order to distinguish between the above two types, some manufacturers use the common type (green) and the locking type (red) for differentiation.