We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Steel compression coupling, zinc plated gray finish, cylindrical shape with threaded ends

Hubbell Incorporated

Hubbell Incorporated RACO 1824 1 in Compression Coupling Steel Zinc Plated Gray

SKU CH-5X2M-QB7QP

A 1-inch compression coupling in zinc-plated steel joins unthreaded IMC or RMC conduit with a straight, threaded connection

  • TypeCable Management & Conduit
  • Color MappingGray
  • Secure compression fit for 1 in RMC and IMC conduit
  • Zinc-plated steel resists corrosion in damp locations
  • CSA certified and UL listed for code compliance
  • Concrete-tight seal protects wiring in slab installations
  • Compact 1 11/16 in length fits tight junction boxes

Hubbell RACO 1824 Compression Coupling

This Hubbell RACO 1824 compression coupling joins unthreaded rigid metal conduit in electrical installations. The steel body with zinc-plated gray finish fits 1 in trade size RMC and IMC raceways. It meets CSA certified and UL listed standards for concrete-tight connections. The straight threaded design includes a clamp for secure attachment.

Thermal and electrical performance

The zinc-plated steel construction resists corrosion while maintaining conductivity across the joint. The concrete-tight rating prevents moisture ingress in embedded runs. The coupling adds minimal resistance to the grounding path. The overall length of 1 11/16 in keeps the profile compact within the raceway system.

Sustained installation reliability

Under continuous service the coupling maintains its mechanical grip and electrical continuity. The threaded connection resists loosening from vibration or thermal cycling. The clamp secures the conduit without damaging the raceway wall. The .44 lb weight reflects solid steel construction suited for permanent installation.

Highlights

  • Secure compression fit for 1 in RMC and IMC conduit
  • Zinc-plated steel resists corrosion in damp locations
  • CSA certified and UL listed for code compliance
  • Concrete-tight seal protects wiring in slab installations
  • Compact 1 11/16 in length fits tight junction boxes

Specifications

TypeCable Management & Conduit
BrandRACO
Color MappingGray

Questions about this item

How do you install the RACO 1824 coupling on unthreaded RMC and what step is often missed?

Slide the coupling onto each conduit end, then tighten the compression nuts until the internal grip ring bites the conduit; the step often missed is confirming the conduit is cut square and deburred so the ring seats evenly.

What maintenance or replacement will the RACO 1824 coupling need over time?

Inspect the zinc-plated finish for corrosion and verify the compression nuts remain tight; replace the coupling if the steel body shows rust or the threads on the UNEF connection are damaged.

What limit appears first when the RACO 1824 coupling is under sustained load?

The 0.44 lb steel body and zinc plating set the mechanical limit; prolonged vibration or thermal cycling can loosen the compression nuts before the coupling itself yields.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.