Nylon Insert Nuts

Nylon insert nuts, often called nylon nuts, are specialized vibration-resistant fasteners. Their design incorporates a hexagonal body with a non-metallic nylon ring at the top. The standout feature of nylon insert lock nuts is the nylon insert prevents loosening, combined with reusability and excellent vibration resistance. Manufactured to ISO 10511 standards, the embedded ring is made from high-strength nylon 66, chosen for its elasticity and wear resistance. When the bolt is threaded in, the nylon ring deforms against the threads, creating a consistent elastic locking force that effectively prevents loosening due to vibration. This locking performance can be maintained over multiple disassembly cycles without damaging the threads, making nylon insert lock nuts a smart choice for high-vibration environments.

Nylon insert nuts are widely used in automotive components, electronic devices, motors and electrical equipment, construction machinery, agricultural machinery, and railway applications. In vehicles, they secure interior trim and suspension components, where their anti-loosening capability ensures driving safety. For electronics like printers and copiers, they prevent fasteners from loosening under operational vibration. In motors and electrical equipment, they are used on end caps and fan mounts to ensure stable operation. Within construction and agricultural machinery, they withstand intense vibrations. In railway and transit applications, they meet stringent safety standards for critical components. Nylon insert lock nuts are a reliable, cost-effective solution for dynamic environments.

The nut body is made from carbon steel 1018A or stainless steel 304. Carbon steel is heat-treated to grade 8 and finished with zinc plating (ASTM B633) or color zinc, providing 72-hour salt spray resistance. Stainless steel offers corrosion resistance for damp environments. The nylon insert is made from RoHS-compliant nylon 66, with a temperature range of -40°C to 120°C and excellent aging resistance. All nylon insert lock nuts are ISO 9001 certified and undergo locking performance testing to ensure tightening torque meets ISO 10511 standards. We offer customization for different nylon materials (e.g., high-temperature variants), special threads, increased thickness, and unique surface treatments. Packaged in moisture-proof individual packs of 200–500 pieces with performance inspection reports, they are easy to select and use for your vibration-prone assemblies.