|0.4375 (7/16)||N/A||14||Plain Finish||0.0480|
Heavy Hex Nylon Insert Lock Nuts — otherwise known as NU Series Nylon Insert Nuts, Heavy Nylok™ Nuts, Heavy Stop Nuts, Plastic Insert Heavy Lock Nuts, Non-Metallic Insert Heavy Nuts, or Polyamide Insert Heavy Lock Nuts — are a part Earnest Machine’s line of NU Nylon Insert Lock Nuts.
Heavy Hex Nylon Insert Lock Nuts have a greater width across the flat compared to Nylon Hex Lock Nuts. Their extra width provides a dispersed clamping load — protecting the clamping material. The nuts are designed with a nylon ring to flow into the threads creating a locking action around the thread. They’re perfect for high-vibration applications. Earnest offers the nuts in 18/8 Stainless Steel and Carbon Steel (Grade A or 2).