Buy Nylon Lock Nut (Metric) (6505623AA)

The Nylon Lock Nut (Metric) (6505623AA) is a specialized fastening component widely used in

automotive and mechanical assemblies to ensurehsecure, vibration-resistant connections. Commonly

referred to as a “nyloc nut,” this type of fastener incorporates a nylon insert that prevents loosening under

dynamic conditions, making it ideal hfor vehicles and equipment exposed to constant movement and stress.

The key feature of this nut is its integrated nylon collar, positioned at the top of the threaded interior. Whe

the nut is tightened onto a bolt or stud, the threads press into the nylon insert, creating friction that resists

rotation. This “prevailing torque” mechanism ensures the nut remains securely in place even under vibration, shock, or repeated motion.

Manufactured typically from high-strength steel with a zinc-plated finish, the 6505623AA metric nylon lock

nut offers both durability and corrosion resistance. The zinc coating protects against rust and environmental wear, while the steel body provides the strength required for demanding automotive applications. (Kooyman)

Metric nylon lock nuts are designed to conform to international

Metric nylon lock nuts are designed to conform to international standards such as DIN 982 or DIN 985,

ensuring compatibility with standard metric bolts. They are available in various sizes (e.g., M6, M8, M10,

M12), allowing them to be used across a wide range of assemblies. The 6505623AA part number typically

corresponds to a specific OEM application, ensuring proper fitment in designated vehicle systems.

components, and other critical areas where loosening could lead to safety issues. Their ability to maintain

clamping force over time makes them more reliable than standard hex nuts in high-vibration environments.

One important consideration is temperature. Nylon inserts generally perform effectively within moderat temperature ranges, but excessive heat can degrade the nylon and reduce its locking capability. For this reason, they are not always suitable for extreme heat zones such as exhaust systems.

Overall, the Nylon Lock Nut (Metric) (6505623AA) is a simple yet highly effective fastening solution. Its

combination of mechanical strength, corrosion resistance, and vibration-locking capability makes it an

essential component for maintaining safety, reliability, and long-term performance in automotive and industrial applications.