FLEXAquick® Metal Thread Strain Relief Fittings

FLEXAquick® metal thread strain relief fittings provide fast, secure, and tool-free conduit termination with integrated metal cord grip strain relief for demanding industrial applications. Designed for reliable mechanical retention and enhanced cable support, select variants also offer EMC bonding, EMC spring sleeve contact, and fire-rated E30 sealing performance where required.

These fittings integrate seamlessly with ROHRflex® flexible corrugated conduits for rapid installation, combining conductor protection with robust threaded connections suitable for vibration, impact, and mechanical stress environments.

FLEXAquick® quick-connect fittings and ROHRflex® flexible corrugated conduits are flagship product lines from IBIS Electro-Products Corp, specializing in high-performance electrical conduit systems.

⚡ No Tools Required — Install in Seconds

FLEXAquick® quick-connect fittings eliminate deburring, ferrules, extra internal sealing rings, and clamping compression rings. Simply push to connect, squeeze to release, and reinstall with no tools — saving time and labour compared to traditional conduit fittings.

Why FLEXAquick® Metal Thread Strain Relief Fittings Stand Out

FLEXAquick® metal thread strain relief fittings use an integrated quick-connect locking clip that securely engages conduit corrugations without tools. Unlike traditional compression fittings that rely on ferrules and tightening hardware, these fittings install or remove in seconds while providing secure cable strain relief through a built-in metal cord grip mechanism.

The nickel-plated brass threaded design supports higher installation torque and provides a robust threaded connection in applications subject to vibration, impact, or mechanical stress. The integrated strain relief helps prevent cable pullout and reduces mechanical stress at cable entry points, improving long-term reliability.

Select fitting variants are available with enhanced functionality, including EMC bonding designs for improved grounding continuity, EMC spring sleeve versions for effective shield contact with braided multi-conductor cables, and E30 fire-rated sealing configurations for applications requiring fire containment performance.

Available Variants and Specialized Configurations

FLEXAquick® metal thread strain relief fittings are available in multiple configurations to meet specific mechanical, EMC, and fire protection requirements:

  • Metric and PG thread versions for common industrial termination standards

  • EMC bonding variant for improved electromagnetic compatibility grounding

  • EMC contacting spring sleeve variant, designed to maintain reliable contact with braided cable shields for enhanced EMI suppression

  • E30 fire-rated version, featuring an internal intumescent filler that expands when exposed to fire to seal internal openings and help prevent flame propagation through the conduit system for a minimum of 30 minutes

These configurations support applications requiring mechanical robustness, electromagnetic compatibility (EMC), and fire protection performance.

Applications for FLEXAquick® Metal Thread Strain Relief Fittings

FLEXAquick® metal thread strain relief fittings are designed for higher installation torque and a robust threaded connection, with integrated metal cord grip support to provide secure cable retention and strain relief in demanding environments. These fittings are well suited for installations where mechanical durability, vibration resistance, and reliable cable termination are required.

Rail & Transit Systems

  • Passenger railcars

  • Subways and light rail vehicles

  • Streetcars and tram systems

  • Cabling subject to vibration, movement, or fire-rated performance requirements

Industrial Automation & Machine Control

  • Machine building and OEM equipment

  • Robotics and motion control systems

  • Industrial control panels and enclosures

  • Wire and cable harnessing requiring secure strain relief

Mobile & Transportation Equipment

  • Electric vehicles and charging infrastructure

  • Agricultural and construction machinery

  • Material handling systems

  • Installations exposed to vibration, shock, or mechanical stress

High-Reliability Industrial Environments

  • Renewable energy installations

  • Power distribution systems

  • Medical and laboratory equipment

  • Applications requiring EMC bonding or shield continuity

Frequently Asked Questions — FLEXAquick® Metal Thread Strain Relief Fittings

No. FLEXAquick® metal thread strain relief fittings use a quick-connect locking design that eliminates the need for compression nuts and installation hand tools for conduit attachment. The integrated cord grip secures the cable while the fitting locks onto ROHRflex® flexible corrugated conduit.

FLEXAquick® metal thread strain relief fittings are available in Metric and PG thread standards. Refer to individual product pages to confirm available sizes and configurations.


FLEXAquick® metal thread strain relief fittings are designed to provide secure conduit termination while mechanically supporting and retaining the cable passing through the fitting. The integrated metal cord grip reduces stress on conductors by limiting cable movement at the connection point, helping protect against vibration, pulling forces, and mechanical strain in demanding industrial environments.

Both metal and plastic thread strain relief fittings use the same FLEXAquick® quick-connect conduit attachment system and integrated cord grip design. The metal thread fittings use nickel-plated brass threads, which offer higher mechanical strength and enhanced threaded retention compared with plastic thread fittings. This makes them well suited for applications requiring higher installation torque, vibration resistance, EMC performance, or fire-rated configurations.

Plastic thread versions provide a durable and cost-effective solution for many general industrial installations where extreme mechanical demands are not present.

Standard strain relief fittings provide mechanical cable retention and conduit termination. EMC bonding versions include conductive components that maintain electrical continuity between the cable shield and grounded equipment, helping support electromagnetic compatibility requirements in sensitive industrial and transportation applications.

EMC (Electromagnetic Compatibility) variants are designed to improve grounding continuity and reduce electromagnetic interference (EMI). The EMC bonding version enhances grounding through the fitting body by providing a conductive connection path between cable shields and grounded hardware.

FLEXAquick® EMC spring sleeve fittings have an integrated conductive spring that contacts the braided shield of multi-conductor cables to maintain effective shield continuity through the fitting.

The E30-rated version includes an internal intumescent filler that expands when exposed to fire, sealing internal openings within the fitting and helping prevent flame propagation through the conduit system. E30 indicates that the fire containment performance is maintained for a minimum of 30 minutes when installed in accordance with applicable specifications.

Yes. FLEXAquick® metal thread strain relief fittings are designed to integrate directly with ROHRflex® flexible corrugated conduits of the corresponding outer diameter. When installed in accordance with product specifications, the fitting securely locks onto the conduit corrugations while providing reliable cable retention and environmental sealing.

Yes. FLEXAquick® metal thread strain relief fittings can be mounted and dismounted multiple times. The quick-connect locking mechanism allows the conduit to be released by compressing the release ring, and the cord grip can be re-tightened as needed. When reinstalled in accordance with product specifications, the fitting maintains reliable mechanical performance and sealing capability.

Ingress protection performance varies by fitting design and configuration. Certain FLEXAquick® metal thread strain relief fittings are available with IP68 and IP69K ratings when installed in accordance with individual product specifications.

Need Assistance Selecting the Right Strain Relief Fitting?

FLEXAquick® metal thread strain relief fittings are engineered to support secure cable retention, EMC performance, and fire protection in demanding industrial and rail applications. If you require assistance selecting the appropriate thread standard, EMC configuration, or E30-rated variant, contact IBIS Electro-Products Corp for technical support and application guidance.

Related Products & Resources

Application Notes & Technical Resources