The Jazrider M4-LNF-R 4mm flanged lock nuts are a simple, durable option for routine RC maintenance. Their flanged face aids retention while the red finish speeds component checks.
The flange increases bearing area, reducing stress on mating surfaces and helping prevent gradual loosening during normal driving and moderate impact. These nuts are appropriate for common M4 threaded hubs, linkages, and small fittings.
Keep a set of M4-LNF-R nuts in your spares kit for quick replacements at the bench or track. Inspect the locking face when reusing and replace if wear reduces the locking action.