Crouse-Hinds UNF Female Condui...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$347.16
Eaton Crouse-Hinds Female Conduit Unions - Aluminum Ext Handle

Crouse-Hinds UNF Female Conduit Union, Steel, Rigid/IMC - Class I Division 1 Hazardous Location

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Model: UNF605

In Stock (leaves warehouse same day if ordered before 3pm ET)

$347.16
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Crouse-Hinds UNF Female Conduit Union

The Crouse-Hinds UNF conduit union joins two lengths of threaded rigid or IMC conduit, or connects conduit to an enclosure hub, without turning either run. Tighten the union nut and the joint is complete, which makes it the practical choice where conduit is already fixed in place or where equipment needs to come out for service. The union is steel and is built for hazardous (classified) locations, so the joint keeps the explosionproof integrity of the conduit system.

Key Features

  • Female threads on both ends
  • Material: Steel.
  • Ground joint design: machined mating faces form a flame path that keeps the conduit system explosionproof once tightened.
  • Trade sizes: 1/2" through 2" NPT for threaded rigid steel and IMC conduit.
  • Service access: disconnect fixtures, enclosures or equipment without unthreading the conduit run.

Certifications & Compliance

  • Class I, Division 1 and 2, Groups C, D (1/2" through 1" sizes also Groups A, B)
  • Class II, Division 1, Groups E, F, G; Class II, Division 2, Groups F, G
  • Class III
  • NEC/CEC

Applications

  • Refineries, chemical and petrochemical plants
  • Paint spray booths and fuel handling areas
  • Grain elevators, flour and feed mills (dust locations)
  • Wastewater treatment and other classified industrial areas

Manufacturer Resources

Product Specs

Area Classification:
Hazardous/Classified Locations
Conduit Type:
Rigid/IMC
Gender:
Female
Special Features:
Group B rated
Standards Type:
NEC/CEC
Department:
Electrical
Product Type:
Conduit Union
Product Subgroup:
Conduit Fittings
Product Group:
Conduit & Raceway
Hazardous Location Equipment:
Conduit Fittings, Unions & Plugs
Nec Hazardous Rating:
Class I, Division 1
Nec Hazardous Rating:
Class I, Division 2
Nec Hazardous Rating:
Class II, Division 1
Nec Hazardous Rating:
Class II, Division 2
Nec Hazardous Rating:
Class III
Nec Hazardous Group:
Group C
Nec Hazardous Group:
Group D
Nec Hazardous Group:
Group E
Nec Hazardous Group:
Group F
Nec Hazardous Group:
Group G

Crouse-Hinds UNF605 – Frequently Asked Questions

1) What trade sizes does the Crouse-Hinds UNF female conduit union come in?
The UNF female conduit union is made in six trade sizes: 1/2 inch (UNF105), 3/4 inch (UNF205), 1 inch (UNF305), 1-1/4 inch (UNF405), 1-1/2 inch (UNF505) and 2 inch (UNF605). Match the trade size to the rigid or IMC conduit run you are breaking into. There is no reducing version, so both ends of the union are the same trade size.
2) Can I use a Crouse-Hinds UNF conduit union in a Class I Division 1 area?
Yes. The UNF union carries a Class I, Division 1 hazardous rating and is Group B rated, which covers hydrogen and gases with similar ignition characteristics. That is the atmosphere classification found in electrolysis rooms, battery charging areas and parts of chemical and pharmaceutical plants. It is built to NEC and CEC standards for classified locations.
3) What does the female gender on a UNF conduit union mean for how I connect it?
Both ends of the UNF union are female, so they thread onto male conduit thread. In practice you thread it onto the cut and threaded ends of your rigid or IMC run, then turn the union nut to draw the two halves together. If the run you are joining terminates in female hubs instead, a female union is the wrong part and you need male-threaded nipples between the hub and the union.
4) Will a Crouse-Hinds UNF union work on EMT?
No. The UNF union is a rigid/IMC fitting with threaded female ends. EMT is not threaded, so it will not take this union directly. To bring an EMT run into a threaded fitting you need an EMT-to-threaded coupling or adapter first, and in a Class I Division 1 area EMT is generally not the acceptable wiring method to begin with.
5) Does an explosionproof conduit union still need a seal fitting?
The union is not a seal. It maintains the integrity of the threaded raceway, but NEC sealing rules are separate: Class I Division 1 work still calls for conduit seals where the raceway enters an explosionproof enclosure and at boundary points between classified and unclassified areas. Order the union for the joint and the seal fittings separately for the seal points.
6) Why use a conduit union instead of just a coupling on a threaded run?
A standard coupling requires you to turn one of the two conduits, which you cannot do once both ends are fixed to boxes or enclosures. A union like the UNF has an external handle nut that pulls the two halves together without rotating either length of conduit. That is what lets you break into or extend an existing rigid or IMC run, and it is why unions get installed at equipment so a device can be removed later without dismantling the whole run.
7) Is a Group B rated union okay to use in a Group C or D area like a paint booth or refinery?
Yes. Group B is the more demanding hydrogen classification, and a fitting rated for it covers the less severe Group C and D atmospheres found in refineries, paint spray booths, gasoline service stations and aircraft hangars. Buying the Group B UNF lets one part number cover mixed-classification areas in a plant rather than stocking several.
8) Which part number do I order for a 3/4 inch rigid conduit union in a hazardous location?
UNF205 is the 3/4 inch size. The next sizes up are UNF305 for 1 inch and UNF405 for 1-1/4 inch. All carry the same Class I Division 1, Group B rating, so the only thing you are choosing on the order is trade size.
9) Can I use this union to disconnect equipment for maintenance without shutting down the whole conduit run?
That is the main reason it gets installed. Placing a UNF union at each piece of equipment on a rigid or IMC run means a motor, junction box or lighting fixture can be dropped out by loosening one handle nut, with no cutting or re-threading and no rotation of the fixed conduit. For an MRO department in a refinery or grain facility, unions at the equipment are what makes scheduled maintenance a one-wrench job.
10) Does the aluminum handle on the UNF union hold up in a corrosive plant environment?
The external handle is aluminum, which resists corrosion in industrial settings and keeps the fitting light enough to handle overhead. Where the atmosphere is aggressively corrosive, such as heavy chloride or salt exposure, plants often specify a coated or feraloy body instead, so check what the rest of the raceway in that area is specified as before standardizing on aluminum.
How fast can I get the Crouse-Hinds UNF605 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Crouse-Hinds UNF605 come with a warranty?
Absolutely. The Crouse-Hinds UNF605 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Crouse-Hinds UNF605?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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