Integrated Anti-Loosening & Anti-Settlement Nut
The Integrated Anti-Loosening & Anti-Settlement Nut addresses two failure modes that quietly destroy bolt preload. The first is settlement: when the bearing pressure under a nut is high, soft materials — aluminum, plastics and some composites — deform and the joint loses clamp load. The second is loosening from vibration.
An oversized bearing flange handles the first problem. Spreading the same force across a larger area reduces unit pressure, so the substrate is far less likely to embed. The joint keeps its preload, and the parts underneath stay dimensionally intact.
The anti-loosening thread or indentation structure handles the second. It generates a persistent lateral locking force that resists rotation even under severe vibration, so preload does not decay over time. The integrated assembly structure delivers this without extra washers or secondary locking components, and the result is a noticeably safer, longer-lived connection.
Extensively used in rail transit bogies, large-scale photovoltaic mounting systems and heavy-duty commercial vehicle chassis, these nuts suit connections involving aluminum alloys and plastics as well as high-vibration scenarios such as bridge construction and heavy structures.
They are the right choice wherever a joint must hold its preload for years despite vibration and material creep.
