The Alum. Nylon LockNut is a hardware fastener used in compatible RC vehicles and hobby assemblies. It combines an aluminum body with a nylon insert that grips the threads of a mating bolt or screw to resist loosening under vibration and torque. The aluminum construction offers lightweight strength, while the nylon insert helps maintain a secure connection during repeated use. The Alum. Nylon LockNut is precision made to fit standard threaded shafts for reliable fastening in critical areas.