These nylon insert lock nuts are carbon steel with zinc plating. The built-in blue nylon ring creates friction with the thread after installation, effectively preventing the nut from loosening caused by vibration and impact. They are reusable for a limited number of times and easy to install without extra lock washers. Suitable for automotive, trailer, mechanical equipment and chassis fastening applications.
- Carbon steel body with zinc plated anti-rust finish
- Built-in blue nylon ring for self-locking friction
- Anti-vibration and anti-loosening performance
- No additional locking washer required
- Suitable for auto, trailer, machinery and chassis assembly
- Multiple metric sizes in stock, custom service supported
Contact us for size chart and bulk quotation.
FAQ
Q: What is zinc plated nylon insert self-locking nut for anti-vibration assembly used for? A: This nylon insert lock nut is a self-locking fastener. The nylon ring grips the bolt thread to stop the nut from backing off when subjected to vibration, commonly used on vehicles and machines.
Q: Can nylon lock nuts be reused many times? A: Not recommended for repeated heavy use. The nylon ring will lose friction after multiple installations, which reduces locking performance.
Q: Are these lock nuts high temperature resistant? A: The nylon insert has a temperature limit. Do not use them in continuous high-temperature working environments.
Q: What sizes do you supply? A: We have a full range of metric sizes from M3 to M24. Tell us your thread requirement.
Q: Can you make other surface finishes? A: Yes, black oxide, color zinc plating and stainless steel versions are available on request for bulk orders.







