tools
Aircraft Fasteners,screw thread insert ,Aircraft Tools standard helical insert
The details of sparking plug thread insert as follows:
1.Features of sparking plug thread insert
Wire thread insert, other names we called threaded bushing;screw Insert ,wire thread insert is a fastener element that is inserted into an object to add a threaded hole. It is made of high strength, precision, corrosion resistant and diamond wire.
2.Advantages for sparking plug thread insert
1. it could enhance the connection strength and abrasion resistant, especially in AL, MG, Cast Iron and other low strength materials.
2.improve thread's stress state and to be spring connection, remove the errors of pitch and thread angle, protect the thread avoiding to be broken, and extend working time.
3. prevents the thread rusting, trip with perfect corrosion, high heat and abrasion resistant in many kinds of environments,repair the internal thread.
3.Technical parameter of standard helical insert:
D
P
Dia.of bore
W(±0.25)
Length after installation
Max.
Min.
Drill
1D
1.25D
1.5D
2D
1D
1.25D
1.5D
2D
M2
0.4
2.18
2.09
2.1
2.9
4.9
6.9
1.7
2.7
3.7
M2.5
0.45
2.70
2.60
2.6
3.5
4.7
5.9
8.1
2.2
2.8
3.4
4.7
M3
0.5
3.22
3.108
3.2
3.9
4.9
6.3
8.7
2.63
3.38
4.13
5.63
M3.5
0.6
3.755
3.63
3.7
3.7
6.3
8.7
3.1
4.8
6.55
M4
0.7
4.292
4.152
4.2
3.7
4.9
6.1
8.4
3.48
4.48
5.48
7.48
M5
0.8
5.334
5.174
5.2
4.3
5.5
6.9
9.7
4.4
5.65
6.9
9.4
M6
1.0
6.407
6.217
6.3
4.2
5.4
6.9
9.6
5.25
6.75
8.25
11.25
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