Eaton Crouse-Hinds 3-1/2" Rigid/IMC Thin Construction Locknut, Steel

Eaton Crouse-Hinds 3-1/2" Rigid/IMC Thin Construction Locknut, Steel

Professional-Grade Conduit Securing Solution for Large Diameter Applications

The Eaton Crouse-Hinds 3-1/2" Rigid/IMC Thin Construction Locknut is a professional-grade securing solution engineered for large diameter conduit installations. This zinc-plated steel locknut delivers reliable mechanical connection and grounding continuity for commercial and industrial electrical systems requiring 3-1/2" trade size conduit terminations.

Key Features & Benefits

Superior Construction & Durability

• Zinc-Plated Steel Construction - Provides exceptional corrosion resistance and long-term durability in demanding environments
• Thin Profile Design - Minimizes space requirements in crowded electrical enclosures while maintaining full securing strength
• Precision Threading - Ensures smooth installation and secure connection to conduit and enclosure threads
• Professional-Grade Materials - Engineered to withstand decades of service in commercial and industrial applications

Installation Efficiency

• Standard Wrench Flats - Compatible with standard electrical tools for quick, secure installation
• Smooth Threading Action - Reduces installation time and effort, even in tight spaces
• Consistent Torque Application - Allows for proper tightening without thread damage or over-compression

Code Compliance & Safety

• NEC/CEC Compliant Design - Meets electrical code requirements for conduit securing and grounding
• Reliable Grounding Continuity - Ensures proper electrical grounding path through the conduit system
• Ordinary Location Rated - Suitable for standard commercial and industrial electrical environments

Technical Specifications

This construction locknut accommodates 3-1/2" trade size rigid steel conduit and IMC (Intermediate Metal Conduit) with standard NPT threading. The zinc-plated steel construction provides superior corrosion resistance compared to uncoated alternatives. Compact dimensions of 4.05" length x 2.43" width x 1.33" height with lightweight 0.18 lb design minimize space requirements while maintaining full mechanical strength. The thin profile construction allows for use in applications where standard locknuts may not fit due to space constraints.

Installation Process

1. Verify conduit end is properly reamed and deburred to prevent thread damage
2. Thread conduit through enclosure knockout or hub opening to desired position
3. Slide locknut onto conduit threads from inside of enclosure
4. Hand-tighten locknut against enclosure wall to establish initial contact
5. Use appropriate wrench or locknut tool to tighten securely, ensuring proper grounding contact
6. Verify locknut is fully seated and conduit is properly secured without over-tightening

Applications

Perfect for:

• Large Motor Control Centers - Securing 3-1/2" conduit feeds to high-amperage motor starters and drives
• Industrial Switchgear - Main feeder conduit connections in manufacturing and processing facilities
• Commercial Distribution Panels - Large building electrical service entrances and main distribution systems
• Transformer Connections - Primary and secondary conduit terminations for pad-mount and indoor transformers
• Generator Transfer Systems - Emergency power system conduit connections requiring large conductor capacity
• Data Center Infrastructure - Power distribution conduit systems for server farms and telecommunications facilities
• Hospital Electrical Systems - Critical power distribution requiring reliable conduit securing in medical facilities
• Municipal Infrastructure - Water treatment plants, pumping stations, and public facility electrical systems

Construction Locknut System Benefits

Construction locknuts provide superior securing strength compared to standard locknuts, making them ideal for large diameter conduit installations where mechanical stress and vibration are concerns. The thin profile design allows for use in space-constrained applications while maintaining full securing capability. Unlike plastic or composite alternatives, steel construction ensures reliable grounding continuity and long-term durability in demanding electrical environments.

Why Choose Zinc-Plated Steel Construction?

Eaton Crouse-Hinds zinc-plated steel locknuts offer the perfect balance of strength, corrosion resistance, and cost-effectiveness for professional electrical installations. The zinc plating provides superior corrosion protection compared to uncoated steel, while maintaining the mechanical strength advantages over aluminum alternatives. This construction ensures decades of reliable service in commercial and industrial environments, making it the preferred choice of electrical contractors for critical infrastructure applications.