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Gray metal conduit coupling with set screws and clamp 2023

Hubbell Incorporated

Hubbell Incorporated Raco 3/4" EMT Set Screw Coupling 1-59/64" Overall Length Includes Clamp 2023

SKU CH-505S-WH9RJ

Couples two EMT conduit ends with steel construction, zinc-electroplated corrosion protection, and tri-head screws for dry locations above 600 volts

  • Color familyGray
  • Product typeCable Management & Conduit
  • Main materialHAWA
  • Couples two EMT conduit ends securely
  • Concrete-tight connection when taped for durability
  • Suitable for applications above 600 volts
  • Steel construction provides mechanical protection
  • Tri-head screws accept slotted, Phillips, or Robertson drivers

3/4" EMT Set-Screw Coupling

The Raco 3/4" EMT set-screw coupling joins two lengths of electrical metallic tubing in dry locations. Steel construction provides mechanical protection while zinc electroplating adds corrosion resistance. Tri-head screws accept slotted, Phillips or Robertson drivers for flexible installation. This coupling suits commercial and industrial wiring projects requiring concrete-tight connections when taped.

Sustained-load performance

Rated for applications above 600 volts, the coupling maintains a secure bond under continuous electrical stress. The steel body resists deformation when conduit expands or vibrates over long runs. Zinc plating preserves conductivity and structural integrity in humid or mildly corrosive environments. Set-screw grip remains reliable without periodic retightening in fixed installations.

Upgrade path and fit

Replaces compression or push-fit couplings where a faster, tool-flexible connection is preferred. The jump is worth it when installers need tri-head screw compatibility to reduce driver changes on site. Not suited for wet locations or direct burial without additional sealing. Buyers needing larger trade sizes up to 4 inches should verify availability separately.

How it compares

Measured against everything we stock in Wire Connectors & Cable Ties, at today’s prices. Recalculated every night.

Price $2.99
Cheaper than about 94% of the 1,040 comparable items (median $13.99).

Specifications

Product
Brand nameRaco
Product typeCable Management & Conduit
Color familyGray
Size & build
Main materialHAWA

Questions about this item

Does the 3/4" EMT set-screw coupling generate any noise, heat or power draw when installed and left in place all day?

The coupling is a passive steel fitting with no moving parts, so it produces no noise, no heat and draws no power during continuous use.

What tools or additional components must I already own to install this Raco coupling on EMT conduit?

You need a slotted, Phillips or Robertson screwdriver for the tri-head set screws, plus the two lengths of 3/4" EMT conduit you intend to join; tape is optional for concrete-tight sealing.

Will this 2023 coupling work with older EMT conduit I already have on site?

Yes, it fits any standard 3/4" EMT conduit regardless of age, and the zinc-electroplated steel construction maintains mechanical protection and corrosion resistance alongside existing runs.

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