Heyco® Nylon Locknuts – NPT Thread
Secure, Corrosion-Resistant Fastening for Electrical and Industrial Applications
Heyco® Nylon Locknuts provide a lightweight, corrosion-resistant solution for securing NPT-threaded fittings in electrical enclosures, industrial equipment, and cable management assemblies. Manufactured from durable Nylon 6/6, these locknuts are designed to retain compatible threaded fittings in panel-mounted installations without requiring metal fastening hardware.
Available in multiple sizes and standard black or gray finishes, Heyco Nylon Locknuts offer a practical fastening solution for applications involving cordgrips, cable glands, and other threaded electrical fittings.

Discover the Features + Benefits |Heyco® Nylon Locknuts
Key Features
Benefits
Applications + Industries
Key Features
- Durable Nylon 6/6 Construction: Manufactured from Nylon 6/6 for a lightweight, durable fastening solution with resistance to rust and corrosion.
- NPT Fitting Compatibility: Designed with straight NPS internal threads for use with compatible MPT-threaded fittings, supporting secure panel-mounted installations.
- Corrosion-Resistant Material: Nonmetallic construction eliminates rust associated with steel hardware, making these locknuts useful where corrosion resistance is an important design consideration.
Benefits
- Secure Threaded Fittings: Provides mechanical retention for compatible threaded fittings installed through enclosure walls and mounting panels.
- Simplify Installation: The threaded design allow locksnuts to be installed using conventional assembly methods without specialized fastening systems.
- Improve Corrosion Resistance: Nylon construction helps eliminate rust-related concerns associated with conventional steel locknuts.
Applications + Industries
Heyco Nylon Locknuts are suitable for a variety of applications involving panel-mounted threaded fittings, including:
- Electronic enclosures
- Industrial control panels
- Cable gland installations
- Telecommunications equipment
More Heyco Solutions
Heyco® Snap-In Smooth Bore Bushings
- Large radius exit hole
- Absorb vibration, and cushion and insulate wires
- Used to protect through-holes. Eliminate sharp edges so wires are protected
Heyco® Shorty Bushings
- For use in panels .062″ (1,6 mm) and thinner
- Lower overall height protrudes less through thin mounting panels
- Locking fingers hold securely after only fingertip pressure snap-in installation
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