Écrou de blocage à languette

Lock nuts are specialized fasteners designed to prevent loosening caused by vibration, torque, or thermal expansion. They are widely used in automotive, construction, machinery, railways, and aerospace applications where safety and reliability are critical.

There are many types of lock nuts, including écrous de blocage à insert en nylon (Nyloc nuts), metal prevailing torque nuts, serrated flange lock nuts, et all-metal lock nuts. The locking function is achieved either through a nylon insert, which grips the bolt threads, or by deforming the metal threads to increase friction.

Lock nuts can be used alone or combined with washers for added security. Materials include carbon steel, stainless steel, and brass, with finishes such as zinc plating, galvanizing, or black oxide to improve corrosion resistance.

They are suitable for both static and dynamic loads and can be reused under certain conditions, although replacement is recommended for critical applications. From small M3 lock nuts for electronics to heavy-duty M36 lock nuts for structural steel, they come in various sizes and thread standards.

Lock Nuts – Reliable Anti-Loosening Solutions for Industrial Applications

Our lock nuts are engineered to prevent loosening even under extreme vibration and dynamic loads. Nylon insert lock nuts use a polymer collar to grip bolt threads, ideal for light to medium loads. All-metal lock nuts rely on deformed threads to create constant friction, perfect for high-temperature environments.

We also offer serrated flange lock nuts, which combine a wide bearing surface with serrations to bite into the mating material, reducing the need for washers. All lock nuts are manufactured to meet ISO, DIN, and ANSI standards, ensuring consistent quality and fit.

Available in carbon steel, stainless steel, and brass, with protective coatings for corrosion resistance, our lock nuts are used in automotive assemblies, heavy machinery, and structural applications worldwide.