NU Nylon Insert Lock Nut

NU nylon insert lock nuts from Xiaoguo® manufacturers are fasteners with built-in nylon elements that create friction with the threads to prevent loosening.

NU nylon insert lock nuts feature a nylon ring on the top. When tightened, the nylon presses against the bolt threads, creating friction that prevents the nut from loosening. The hexagonal shape can be tightened with basic tools, and using materials such as galvanized steel prevents rust.

Product details and parameters

NU nylon insert lock nuts are self-locking fasteners with a nylon ring within the threads. When screwed onto the bolt, the nylon grips the threads and prevents the nut from loosening due to vibration or movement. Made from materials such as stainless steel or galvanized steel, nylon insert lock nuts are suitable for a variety of machinery, vehicles or equipment.Unlike regular nuts, the NU nylon insert lock nut locks on its own—no need for extra washers or glue. It’s easy to install, works with standard tools, and can be reused a few times before the nylon wears out.

The NU nylon insert lock nut is slightly taller than standard nuts to fit the insert but still compact enough for tight spaces.

Downsides:The nylon wears down after a few removals, and it’s not ideal for high-heat areas like exhaust systems.

Our market distribution

Key Selling Points

NU nylon insert lock nut stays put,no need to keep tightening them. The nylon bit inside grips the bolt like a built-in brake, even in shaky stuff like engines or conveyor belts. Cheaper than fancy locking setups, and doesn’t chew up bolt threads. Standard wrench fits just fine. Rust-proof materials mean they hold up outdoors or in damp spots. Use them for machinery, garage projects, anything that rattles.