Wire thread insert
Inch Metric Screw-Lock wire threaded inserts
Free Running wire thread insert and ScrewLock wire thread insert
AVIC-Flight thread inserts are available in two versions: free running and SCREWLOCK: Both variations distinguish themselves due to an optimal design. As with a screw the threaded inserts are simply screwed in by means of a fitting mandrel. The fitting time is reduced by up to 40% due to the fact that the program of utilisable tools has been so radically extended compared to previous methods of operations.
FR-Free Running wire thread insert
The thread insert with its precision-formed rhomboidal profile is coil for coil free running. The result is a true-to-gauge internal thread, double sided utilisable.The dimensional accuracy of the ISO thread conforms to DIN 6H, and 5H for special requirements. The AVIC-Flight free running is coloured green for better identification in its fitted condition and the colour does not come off.
Every original AVIC-Flight free running thread insert is unmistakably identified by means of a diamond shaped quality embossing at the end of the final coil.
SL-ScrewLock wire thread insert
AVIC-Flight SCREWLOCK offers the same thread technological advantages as free running. In addition,a screw gripping section is worked in, which serves as a screw-gripping device.The gripping of the screw is achieved by means of one or several polygons formed coils, which grip the threads of the installed screw. In this way an elastically resilient friction lock is created.
The locking moment achieved in this way is comparable with the specifications in DIN 267 Part 15, ISO 2320 or can be individually adapted to problem solutions.
The red coloured AVIC-Flight SCREWLOCK thread insert, also stamped with the diamond formed embossing, should only be utilised with higher grade screws (starting from 8.8). High grade alloyed screws should be lubricated according to the recommendations of the manufacturer. The same torque should be applied as for the AVIC-Flight free running
Wire Thread Insert Parameters
Product name |
Screw-lock wire thread insert |
Material |
SUS304/SUS316/SUS321/InX750/Brass/Customized |
Surface color |
None / Eco-friendly plating |
Surface coating |
Silver/tin/cadmium/zinc/other |
Thread type |
Metric,Inc UNC, UNF |
Metric Size |
M1.4*0.3P～M85*6.0P |
Inch UNC Size |
1-64~11/2“-6 |
Inch UNF Size |
4-48~11/2“-12 |
Production standard |
MS21209/DIN8140/N926/ITN32760/MO-44421 |
Wire thread insert Common specifications parameter list
Diameter |
Pitch |
d |
(Dz) |
Bit diameter |
|
(d) |
(P) |
(do) |
|||
Metric | |||||
M1.6 |
0.35 |
1d/1.5/2d/2.5d/3d |
2.08-2.18 |
1.7 |
|
M2 |
0.4 |
1d/1.5/2d/2.5d/3d |
2.60～2.80 |
2.1 |
|
M2.5 |
0.45 |
1d/1.5/2d/2.5d/3d |
3.30～3.50 |
2.6 |
|
M3 |
0.5 |
1d/1.5/2d/2.5d/3d |
3.80～4.00 |
3.2 |
|
M4 |
0.7 |
1d/1.5/2d/2.5d/3d |
5.05～5.25 |
4.2 |
|
M5 |
0.8 |
1d/1.5/2d/2.5d/3d |
6.35～6.60 |
5.2 |
|
M6 |
1 |
1d/1.5/2d/2.5d/3d |
7.60～7.85 |
6.3 |
|
M7 |
1 |
1d/1.5/2d/2.5d/3d |
8.65～8.90 |
7.3 |
|
M8 |
1.25 |
1d/1.5/2d/2.5d/3d |
9.85～10.10 |
8.4 |
|
M10 |
1.25 |
1d/1.5/2d/2.5d/3d |
12.10～12.50 |
10.4 |
|
M11 |
1.5 |
1d/1.5/2d/2.5d/3d |
13.10～13.50 |
11.5 |
|
M12 |
1.75 |
1d/1.5/2d/2.5d/3d |
14.40～14.80 |
12.5 |
|
Inch | |||||
2-56 (0.086) |
0.435 |
1d/1.5d/2d/2.5d |
2.7～2.9 |
2.4 |
|
4-40 (0.112) |
0.635 |
1d/1.5d/2d/2.5d |
3.6～4.0 |
3.1 |
|
5-40 (0.125) |
0.635 |
1d/1.5d/2d/2.5d |
4.0～4.4 |
3.4 |
|
6-32 (0.138) |
0.794 |
1d/1.5d/2d/2.5d |
4.5～4.9 |
3.8 |
|
8-32 (0.164) |
0.794 |
1d/1.5d/2d/2.5d |
5.2～5.6 |
4.4 |
|
10-24 (0.190) |
1.058 |
1d/1.5d/2d/2.5d |
6.2～6.6 |
5.2 |
|
12-24 (0.216) |
1.058 |
1d/1.5d/2d/2.5d |
6.8～7.2 |
5.8 |
|
1/4"-20 |
1.27 |
1d/1.5d/2d/2.5d |
8.0～8.4 |
6.7 |
|
5/16"-18 |
1.411 |
1d/1.5d/2d/2.5d |
9.7～10.2 |
8.4 |
|
3/8"-16 |
1.588 |
1d/1.5d/2d/2.5d |
11.5～12.0 |
10 |
|
The Advantages of Screw-lock wire thread insert
Screw-lock wire thread insert can firmly lock the screw (bolt) in the threaded hole, even in the case of vibration and impact, it can effectively prevent the screw from loosening. This locking performance is more superior than other commonly used locking devices (such as locking potential rings, spring washers, etc.), and the Screw-lock wire thread insert can be repeatedly disassembled and used, and has high reusability.
In addition, the use of Screw-lock wire thread insert can also simplify the process to solve the problem of precision threading and assembly. Its lightweight structure, no displacement degree, perpendicularity and other position deviation between internal and external threads, help to improve the accuracy of the screw hole position. At the same time, it can also convert the thickness and fine teeth in the original design specifications, without changing any other structure.
During the installation process, the diameter of the Screw-lock wire thread insert is reduced by the torque of the special wrench, so that it can be successfully loaded into the screw hole that has been tapped. After the installation is completed, the steel wire thread insert will produce a role similar to the expansion of the spring, and it will be firmly fixed in the threaded hole, and will not be brought out with the screw.
In general, the Screw-lock wire thread insert has a wide range of applications in machinery, automotive, aerospace and other fields by virtue of its superior locking performance, repeatability, process simplification and other characteristics.