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Gray zinc-plated iron threaded coupling, three-piece, 3/4 inch trade size

Hubbell Incorporated

Hubbell Incorporated RACO 1503 Threaded Coupling 3/4 in Iron Zinc Plated Gray

SKU CH-RW4Z-5DDCQ

Threaded iron coupling joins 3/4 in IMC or RMC conduit, zinc-plated for corrosion resistance, cULus listed

  • Color familyGray
  • Product typeCable Management & Conduit
  • Threaded three-piece coupling connects IMC and RMC conduit securely
  • Zinc-plated iron construction resists corrosion in damp locations
  • cULus listed for code-compliant installations
  • 3/4 in NPT female threads fit standard conduit fittings
  • Compact 1 1/8 in length suits tight junction boxes

3/4 in Threaded Coupling

The Hubbell RACO 1503 coupling joins two sections of threaded rigid metal conduit or intermediate metal conduit in a straight line. It is built for electricians and maintenance crews who need a code-compliant connection in commercial or industrial wiring systems.

Iron Body Zinc Plated Finish

The three-piece iron construction carries a zinc-plated gray coating that resists corrosion in damp or outdoor locations. Female NPT threads on both ends accept 3/4 in trade-size conduit without adapters, and the cULus listing confirms the fitting meets safety standards for exposed or concealed runs.

Replaces Worn or Undersized Couplings

Use this coupling when an existing fitting shows thread damage, rust or loose assembly that could compromise grounding continuity. The jump is worth it on any retrofit where the conduit system must stay grounded and the installation must pass inspection without re-threading pipe.

How it compares

Measured against everything we stock in Wire Connectors & Cable Ties, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 92% of the 1,040 comparable items (median $13.99).

Specifications

Product
Brand nameRACO
Color familyGray
Product typeCable Management & Conduit

Questions about this item

What thread standard does the 3/4 in coupling use and what conduit types does it accept?

The coupling uses 3/4 in.-14 NPT threads and is compatible with IMC and RMC conduit.

What are the overall length, height and width dimensions for mounting clearance?

Overall length is 1 1/8 in; overall height and width are each 1 7/16 in.

How is the three-piece coupling assembled onto threaded conduit?

Thread each end onto the conduit, then tighten the centre nut to lock the joint.

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