Nord-Lock

Nord-Lock lock nuts are widely recognized as highly effective mechanical locking solutions, and they are well suited for heavy-duty vehicle wheel fastenings, especially in situations where vibration or dynamic loads can cause fasteners to loosen.

Suitability for heavy-duty vehicle wheels
Applications
Trucks
Buses
Heavy equipment (e.g. excavators, forklifts, agricultural machinery)
Trailers
Military vehicles

Why is Nord-Lock a good choice?
Prevents bolts or nuts from loosening under vibration – unlike spring washers or thread-locking adhesives
Two-piece washer set that locks mechanically in place (wedge effect vs. thread friction)
Maintains preload even under dynamic loading
Reduces the risk of wheel detachment, which is a critical safety factor

Installation notes
Washers are always used in pairs (with the cam faces placed together)
Must not be used together with other locking systems (e.g. spring washers)
Tightened normally with a torque wrench, no special tools required