The Ergom N 21/H BK is a professional-grade polyamide locknut engineered specifically for PG21 cable glands. This component is essential for securing cable entries in electrical enclosures, junction boxes, and control panels, ensuring that the gland remains firmly in place even under vibration or mechanical stress. Manufactured from high-quality, durable polyamide, this black locknut offers robust performance and long-term reliability in various industrial and commercial electrical installations.
Advantages
The primary benefit of this polyamide locknut is its exceptional resistance to mechanical impact and environmental degradation. Its lightweight yet sturdy construction ensures a tight fit, preventing the loosening of cable glands over time. The material properties provide excellent insulation and chemical resistance, making it suitable for demanding environments where durability is paramount. Its standardized PG21 thread design allows for seamless integration with compatible cable glands, facilitating quick and efficient installation processes.
Suitable for
- Securing cable glands in electrical junction boxes
- Industrial control panel wiring
- Commercial electrical installations
- Outdoor and indoor cable management systems
When it may not be suitable
This locknut is designed specifically for PG21 thread sizes and will not fit glands with different thread standards such as metric or NPT. It is intended for standard electrical applications and may not be suitable for environments involving extreme heat or highly corrosive chemical exposure where specialized metal or high-temperature materials are required.
Key specifications
- Thread size: PG21
- Material: Polyamide
- Color: Black
- Application: Cable gland fastening
- Resistance: Mechanical stress and environmental factors
How to use
To use the Ergom N 21/H BK, first insert the cable gland through the opening of the enclosure. Once the gland is positioned, thread the locknut onto the gland from the inside of the enclosure. Tighten the nut manually or with appropriate tools until it is firmly seated against the wall of the enclosure, ensuring the gland is locked securely in place. Do not overtighten to avoid damaging the plastic threads.
What to consider before purchase
- Verify that your cable gland is compatible with the PG21 thread standard
- Check the wall thickness of your enclosure to ensure sufficient thread length
- Confirm the environmental conditions of your installation site
Usage recommendations
For optimal performance, ensure the locknut is tightened evenly to maintain the integrity of the cable gland seal and prevent moisture or dust ingress into the electrical enclosure.
