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Aluminium reducing bushing 1 in x 1-1/2 in threaded plain finish

Killark

Killark R-53 IMC Reducing Bushing 1 in x 1-1/2 in Threaded Aluminum conduit

SKU CH-K93X-SSQ1P

Threaded aluminum reducing bushing connects 1 in and 1-1/2 in IMC conduit in hazardous locations

  • Product typeCable Management & Conduit
  • Reduces conduit size from 1-1/2 in to 1 in for flexible routing
  • Threaded female-to-male ends enable secure IMC and RMC connections
  • Aluminium construction resists corrosion in harsh industrial environments
  • Rated for Class I Division 1 and 2 hazardous locations
  • Compact 7/8 in length fits tight enclosure spaces

1 in x 1-1/2 in Reducing Bushing

The Killark R-53 reducing bushing connects 1 in female threaded conduit to 1-1/2 in male threaded conduit. It is manufactured from plain aluminium and rated for hazardous locations including Class I Division 1 and 2, Groups A through D. The fitting suits IMC and threaded RMC conduit types. Overall length measures 7/8 in with a width of 1 29/32 in.

Installers needing hazardous-location step-down

Electricians reducing conduit trade size in Class I Zone 1 or 2 areas will find the required certifications present. The bushing also meets Class II Division 1 and 2, Groups E, F and G requirements. Buyers who need a different trade-size combination or a non-hazardous fitting should look at other listings.

Female to male NPT thread gender

The critical specification is the 1 in FNPT to 1-1/2 in MNPT thread configuration, which determines whether the bushing matches the existing conduit ends. Verify the conduit trade sizes and thread direction before ordering.

How it compares

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

Price $9.99
Cheaper than about 73% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameHUBBELL KILLARK
Product typeCable Management & Conduit

Questions about this item

What thread standard do the 1 in FNPT and 1 1/2 in MNPT ends use, and what hazardous-location classes does that connection cover?

The bushing uses NPT threads and is rated for Class I Division 1 and 2 Groups A through D, Class I Zones 1 and 2 Groups IIC, IIB, IIA, and Class II Division 1 and 2 Groups E, F, G.

What are the overall length, height and width so I can confirm it fits inside the enclosure?

Overall length is 7/8 in, overall height is 1 in and overall width is 1 29/32 in.

How do I install the reducing bushing and what is the common mistake to avoid?

Thread the 1 1/2 in MNPT end into the larger IMC or threaded RMC fitting, then thread the 1 in FNPT end onto the smaller conduit; the frequent error is cross-threading the aluminium threads, so start both engagements by hand before tightening.

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