AMECA
Z.A. - BP 21 - 73410 ALBENS - France
Tél. + 33 (0)4.79.54.13.47
Fax: +33 (0)4.79.54.11.29
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Universal solutions in mechanical fastening
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Self-locking "AMECOIL" thread inserts
Products > Thread inserts
Self-locking “AMECOIL” thread inserts.
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Amecoil locking thread inserts |
This self-locking series corresponds in all points to the conventional series, the screw threads being locked by polygonal deformation of one or more turns of the thread.
This deformation results in a powerful locking on the sides of the screw thread and counteracts the unscrewing effects of dynamic stresses, vibrations and thermal loads. The locking torques obtained are comparable with the values indicated in standard ISO 2320.
The stainless steel self-locking thread insert is recognised by its red colour. |
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Drilling
From +0.1 to +1 mm of the nominal diameter of the screw.
Chamfer ≤ at the diameter
of the tap.
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Tapping
Performed using the AMECOIL tap.
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Installation
Using tools
of the conventional series…
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… or those of the SR series, for even quicker installatio.
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Breaking
of the drive
stud
With the AMECOIL impact breaker or automatically.
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Thread insert
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LOCKING TORQUE |
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Dimensions |
Max 1st
tightening |
Min 1st
loosening |
Min 5th
loosening |
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M3 |
0,43 |
0,12 |
0,08 |
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M4 |
0,90 |
0,18 |
0,12 |
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M5 |
1,60 |
0,29 |
0,20 |
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M6 |
3,00 |
0,45 |
0,30 |
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M8 |
6,00 |
0,85 |
0,60 |
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M10 |
10,5 |
1,50 |
1,00 |
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M12 |
15,8 |
2,30 |
1,60 |
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M14 |
24,0 |
3,30 |
2,30 |
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M16 |
32,0 |
4,50 |
3,00 |
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M20 |
54,0 |
7,50 |
5,30 |
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M24 |
80,0 |
11,5 |
8,00 |
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Values in Nm quoted from ISO 2320 (class 8 screws) |
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GENERAL CHARACTERISTICS |
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Material |
Maximum
operating
temperature |
Surface coating
options |
Applications |
Standard material
Stainless steel 18.8
AISI 304 (1.4301)
AISI 302 (1.4310) |
425°C (peak)
315°C (continuous) |
- Dry lubrication
- Cadmium plating
- Silver plating
- Zinc plating
- Tinning |
All normal applications in all materials |
Special stainless steels:
AISI 304L, 316, 316L, 316Ti, 321 |
Up to 400°C
continuously |
Special applications
Resistance to acids, corrosion, high temperatures – non-magnetic |
Phosphorous
bronze |
300°C (peak)
250°C (continuous) |
Cadmium plating |
Copper parts.
High resistance to some electrolytic couples. |
Inconel x 750
Nc 15 Fe Nba |
750°C (peak) |
Silver plating |
Thermal power plants
Aerospace
Aeronautics
Turbochargers |
Nimonic 90
Nc 20 C. 18Ti |
538°C (continuous) |
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