DIN 8140 + Stainless Steel / SS + Threaded Insert / Wire Thread Insert / Helical Insert / Helicoil
Thread repair inserts conforming to
German Industrial Standard DIN 8140,
designed to reinforce threads in soft
substrates (aluminum/magnesium alloys,
plastics) with permanent vibration-
resistant and anti-loosening solutions.

|
Parameter |
Specification |
Test Standard |
|
Material |
Stainless Steel 316L (A4) / 304 (A2) |
ISO 3506 |
|
Tensile Strength |
≥700 MPa (316L) |
DIN 50125 |
|
Salt Spray Resistance |
≥1,500 hours (neutral) |
ISO 9227 |
|
Operating Temp. |
-200℃ ~ +750℃ (316L vacuum annealed) |
DIN EN 10204 |
|
Installation Torque |
1.3 × standard torque (M6 substrate) |
DIN 8140:2017 |
|
Locking Type |
Diamond Knurl or Pre-applied Threadlocker |
§3.2 DIN 8140 |

Key Applications:
|
Industry |
Typical Components |
Function |
|
Rail Transportation |
Train bogey bolt holes |
Prevents fatigue stripping in aluminum threads |
|
Aircraft Engines |
Magnesium alloy housing mounts |
Reinforces threads against thermal creep |
|
Medical Devices |
CT scanner titanium frame mounts |
Biocompatibility + non-magnetic interference |