Nylon lock nuts, also known as nylon insert lock nuts or Nyloc nuts, are a type of prevailing torque nut designed to provide secure and reliable fastening in various applications. These nuts are known for their unique internal nylon insert, which creates resistance against loosening due to vibrations, temperature changes, and other external factors.
Nylon lock nuts are a subtype of prevailing torque nuts, which means they are engineered to maintain a consistent level of friction between the nut and the bolt threads. The distinctive feature of nylon lock nuts is the nylon insert (also called a nylon ring or collar) placed inside the nut. This insert forms a tight grip on the threads of the bolt when the nut is tightened, providing resistance to self-loosening.
Key Characteristics and Advantages
Nylon lock nuts offer several key characteristics and advantages that make them valuable in a wide range of applications:
- Vibration Resistance: The nylon insert inside the nut creates friction against the bolt threads, which helps prevent the nut from coming loose due to vibrations and shocks. This makes nylon lock nuts ideal for applications where machinery, vehicles, or equipment experience continuous movement or external forces.
- Temperature Stability: Nylon lock nuts maintain their locking capability over a broad temperature range. The nylon insert retains its properties in both high and low-temperature environments, ensuring consistent performance.
- Reusable: While nylon lock nuts provide excellent locking capabilities, they can be removed and reused multiple times without significantly compromising their effectiveness. This reusability is advantageous in applications requiring maintenance or component replacements.
- Versatility: Nylon lock nuts are compatible with various bolt types and materials, allowing them to be used in diverse applications across industries.
Common Applications of Nylon Lock Nuts
Nylon lock nuts are employed in a wide range of applications across various industries. Some common applications include:
- Automotive: Nylon lock nuts are used extensively in the automotive industry for securing critical components such as wheel assemblies, suspension systems, and engine parts. Their vibration resistance ensures that fasteners remain secure, even under challenging road conditions.
- Machinery and Manufacturing: In manufacturing and machinery, nylon lock nuts are used to secure moving parts and components. Their ability to withstand vibrations makes them suitable for heavy-duty machinery.
- Construction: Nylon lock nuts are utilized in construction applications for anchoring structural components and securing critical connections that must withstand wind, seismic activity, and other forces.
- Aerospace and Aviation: In the aerospace and aviation sectors, nylon lock nuts are used in various critical applications to ensure the integrity of aircraft components, including engines, landing gear, and avionics.
- Marine: Nylon lock nuts are ideal for marine applications due to their resistance to corrosion and vibrations. They are used to secure components on boats, ships, and offshore structures.
Bolts Used with Nylon Lock Nuts
Nylon lock nuts are compatible with a wide range of bolts, screws, and threaded fasteners. The choice of bolt depends on the specific application and its requirements. Common types of bolts used with nylon lock nuts include:
- Hex Head Cap Screws: Hexagonal head bolts, also known as hex bolts or hex cap screws, are a common choice for use with nylon lock nuts. They provide a strong and reliable connection and are widely used in construction, machinery, and structural applications. An important note: the nut should be a comparable strength to the bolt. Example: Grade 5 nylon lock nut with a Grade 5 cap screw.
- Stud Bolts: In applications where flange connections are prevalent, stud bolts and nylon lock nuts are used together to create a reliable and leak-proof joint. This combination is commonly employed in the oil and gas industry for connecting pipelines and flanges.
Please find specifications below: