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Flat round steel washer with zinc coating and central hole

L.H. DOTTIE

L.H. DOTTIE RW104 Conduit Fitting Reducing Washer

SKU CH-TR93-WTDWW

Reducing washer connects 4 in conduit to 1-1/4 in fittings using zinc-plated steel

  • Reduces conduit size from 4 in to 1-1/4 in for flexible routing
  • Steel construction with zinc coating resists corrosion in damp locations
  • Fits standard conduit fittings for quick, tool-free installation
  • New condition ensures clean threads and undamaged surfaces
  • DOTTIE brand trusted by electricians for reliable conduit hardware

Reducing washer for 4 in conduit

The L.H. DOTTIE RW104 reducing washer adapts a four-inch conduit opening to a one-and-a-quarter-inch fitting. It is made of steel with a zinc finish for corrosion resistance. The part suits electricians and maintenance crews joining dissimilar conduit sizes in commercial or industrial raceway systems.

Replaces improvised bushings or step-down couplings

Using this single washer eliminates the need to stack multiple reducers or fabricate custom sleeves. The jump is worth it when a clean, code-compliant transition is required between the two stated trade sizes and the installation must stay rigid and grounded.

Slips over the conduit end before the locknut

Installation is a simple hand fit; no threading or tools are required beyond the standard wrenches used for the locknut. The only common issue is forgetting the washer until after the conductors are pulled, which means rework to seat it correctly.

Highlights

  • Reduces conduit size from 4 in to 1-1/4 in for flexible routing
  • Steel construction with zinc coating resists corrosion in damp locations
  • Fits standard conduit fittings for quick, tool-free installation
  • New condition ensures clean threads and undamaged surfaces
  • DOTTIE brand trusted by electricians for reliable conduit hardware

Specifications

BrandDOTTIE

Questions about this item

What size reducing washer do I need for a 4 in to 1-1/4 in conduit connection?

The RW104 reducing washer is made for a 4 in trade-size opening stepping down to a 1-1/4 in conduit, providing the correct shoulder for the fitting.

How is the zinc-plated steel washer installed without damaging the coating?

Slip the washer over the conduit threads before tightening the locknut; hand-tighten then add one-quarter turn with a wrench to avoid stripping the zinc layer.

When should the reducing washer be replaced in a conduit run?

Replace the washer if the zinc plating shows white corrosion, the steel darkens to red rust, or the washer deforms and no longer seats flat against the fitting shoulder.

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