
Settlement is the reason the elastic family exists. Under sustained pressure, a soft clamped part creeps and preload falls. A nut with an elastic element can follow that movement and keep the joint tight, which is more effective on plastic, aluminium or wood than simply increasing torque.
Material: Spring Steel 65Mn. It is tightened with a torque wrench.
Prevailing torque falls with each reuse, so replace nuts on safety-critical joints.
| Material | Spring Steel 65Mn |
|---|---|
| Surface Treatment | Black oxide / Zinc-plated |
| Standard | ISO 2320, GB/T 3098.2 (nut properties) |
| Installation | torque wrench |
| Typical substrate | automotive, construction, curtain wall |
| Key inspections | prevailing torque, crimp dimensions, hardness |
Threads are gauged 6H and the crimp measured with a dedicated plug gauge.Alternative materials and finishes can be quoted side by side during sampling, so cost and corrosion resistance can be traded off explicitly.