RACOThree-Piece Threaded Couplings
RACO Threaded Coupling
The RACO Threaded Coupling is a three-piece threaded coupling designed for use with RMC conduit. This iron coupling has a 1-inch trade size and a 1 3/8-inch overall length, identified by manufacturer part number 1504.
SKU 3G-OTH-06508
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RACO Products
3G Electric (S) Pte. Ltd. — Singapore
Product Description
The RACO Threaded Coupling is a three-piece threaded coupling designed for use with RMC conduit. This iron coupling has a 1-inch trade size and a 1 3/8-inch overall length, identified by manufacturer part number 1504.
Used in
Common applications for RACOIndustrial power distribution — RACO grounding bushings (MPN 1294) for bonding conduit in panelboards and switchgear.
Commercial conduit transitions — RACO reducing bushings (MPN 1155) for downsizing RMC or IMC runs in electrical rooms.
Life safety alarm circuits — RACO steel electrical boxes (MPN 911-9) for housing fire alarm and emergency lighting connections.
Outdoor service entrances — RACO rigid/IMC hubs (MPN 1716) for weatherproof conduit terminations at meter sockets.
Conduit support in cable trays — RACO surface mount clamps (MPN 1304) for securing IMC or RMC to structural steel.
Multi-gang junction boxes — RACO 4-inch square boxes (MPN 189H) with covers for splicing circuits in commercial ceilings.
RACO Products
3G Electric supplies RACO three-piece threaded couplings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.













