Heyco® Nylon Locknuts
Heyco Logo

Heyco® Nylon Locknuts (NPT, PG, and Metric Threads)


  • NPT Thread–Straight NPS Threads for use with NPT Threaded Fittings
  • PG Thread
  • Metric Thread
  • Material Nylon 6/6
  • Flammability Rating 94V-2 Standard–Consult Heyco for VO material
  • Temperature Range -22°F (-30°C) to 221°F (105°C)
  • Standard colors black or gray.

Don't see what you're looking for?

We offer custom colors and sizes, just reach out and we’ll help you get what you need.

Contact Us