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3 inch threaded aluminum conduit bushing

L.H. DOTTIE

L.H. DOTTIE GBL300 Conduit Bushing 3 in Threaded Aluminum

SKU CH-GMYC-NRJ78

Threaded aluminium conduit bushing protects cable insulation at 3 in entries

  • Product typeCable Management & Conduit
  • Threaded aluminium protects cables from sharp edges
  • Three-inch size fits standard conduit runs
  • Lightweight aluminium eases handling on site
  • DOTTIE brand signals trade-grade reliability
  • Smooth bore reduces wire-pull friction

3-Inch Threaded Conduit Bushing

The L.H. DOTTIE GBL300 is a threaded aluminium bushing designed for three-inch conduit systems. It provides a smooth bearing surface for cable pulls and protects wire insulation from sharp conduit edges. Electrical contractors and maintenance technicians use it when terminating or joining rigid or IMC conduit runs.

Thermals Noise and Power

As a passive metal fitting the bushing generates no heat and produces no audible noise during operation. It adds negligible electrical resistance to the raceway and requires no external power supply or cooling consideration. The aluminium construction resists corrosion in typical indoor and sheltered outdoor environments.

Threaded Aluminium Construction

The fitting features standard conduit threads cut directly into the aluminium body for secure attachment to three-inch conduit or couplings. Aluminium offers a lightweight yet durable alternative to steel bushings while maintaining code-compliant mechanical protection. Installers who require a non-threaded or insulated throat bushing should select a different model.

How it compares

Measured against everything we stock in Electrical Conduit & Fittings, at today’s prices. Recalculated every night.

Price $112.99
Pricier than about 88% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameDOTTIE
Product typeCable Management & Conduit

Questions about this item

How do I install the 3 in threaded aluminum bushing and what step is often missed?

Thread the bushing onto the 3 in conduit until the shoulder seats fully; the step often missed is tightening with a strap wrench to prevent cross-threading the aluminum threads.

What maintenance or replacement will the GBL300 bushing need over time?

Inspect the aluminum threads annually for corrosion or galling; replace the bushing if the threads show deformation or the shoulder no longer seats flush.

What limit appears first on the DOTTIE GBL300 under sustained heavy cable pulls?

The aluminum threads will gall or strip before the conduit body yields, so lubricate pulls and avoid exceeding the bushing's thread engagement length.

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