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White thermoplastic threaded conduit bushing four inch

L.H. DOTTIE

L.H. DOTTIE PB400 Conduit Fitting Bushing 4 in Threaded Thermoplastic

SKU CH-BSC8-PC03Q

Threaded thermoplastic conduit bushing protects cables in 4-inch fittings

  • Product typeCable Management & Conduit
  • Threaded thermoplastic protects cables from sharp edges
  • Four-inch size fits standard large conduit runs
  • DOTTIE brand trusted by electrical professionals
  • Thermoplastic construction resists corrosion and impact
  • Simple threaded installation saves time on site

4 in Threaded Conduit Bushing

The L.H. DOTTIE PB400 is a thermoplastic conduit fitting bushing with a 4 in threaded connection. It protects cable insulation where conductors enter a conduit body or enclosure. Electrical contractors and maintenance technicians use it to meet code requirements for smooth wire entry.

Thermoplastic Construction and Threaded Mount

The moulded thermoplastic body resists moisture, chemicals and impact in indoor or outdoor runs. Threaded ends screw directly into matching conduit hubs or boxes without specialised tools. The smooth internal bore prevents insulation damage during long pulls and allows easy conductor removal for future changes.

Verify Conduit Size and Thread Compatibility

Confirm the existing conduit system uses 4 in trade size with matching thread pitch before ordering. The bushing is designed for threaded rigid or intermediate metal conduit entries only. Buyers who need non-threaded slip-fit bushings or a different trade size should select an alternative fitting.

How it compares

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

Price $21.99
Cheaper than about 57% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameDOTTIE
Product typeCable Management & Conduit

Questions about this item

What conduit size does the 4-inch threaded bushing accept?

The PB400 is a 4-inch threaded thermoplastic bushing designed to fit 4-inch conduit openings and protect cable insulation at the entry point.

What mounting method does the PB400 bushing use?

The bushing threads directly into a 4-inch female conduit hub or fitting, requiring no additional hardware for secure installation.

How do you install the threaded bushing without damaging the threads?

Hand-tighten the PB400 into the conduit hub until snug, then finish with a strap wrench — over-torquing with pipe wrenches often cracks the thermoplastic body.

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