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About this category

Arlington bushings and locknuts protect and secure conductors and conduit at box and enclosure entries, covering insulated bushings, conduit locknuts and reducing washers. Maple Electric Supply is an authorized Canadian Arlington Industries dealer, so stock is genuine and carries the full manufacturer warranty, priced in CAD with no cross-border duty. Shipping is fast across Ontario and Quebec, and counter pickup at our Vaughan warehouse is available Monday to Friday. Install to your local requirements and the Canadian Electrical Code.

Arlington grounding bushings, insulated throat bushings, and locknuts terminate rigid, IMC, and EMT conduit at steel enclosures — providing the mechanical bond, ground connection, and conductor protection required by the CEC. Stocked in Canada by Maple Electric — priced in CAD, ships Canada-wide, will-call pickup available.
Common questions
When do I need a grounding bushing vs an insulated bushing?
An insulated bushing (plastic throat) protects conductors from abrasion. A grounding bushing adds a bonded lug for the equipment grounding conductor and is required where the CEC calls for a bonding jumper at service or high-fault-current runs — confirm with your licensed electrician.
What trade sizes are stocked?
Arlington bushings and locknuts are stocked from 1/2" through 4" trade size in insulated, grounding, and standard steel/malleable configurations. Filter this collection by size or check the individual product spec for finish and thread type.
Are these locknuts CSA-listed?
Many Arlington locknuts and bushings carry cULus and CSA listings; some are cULus-only. Confirm the CSA mark on the packaging or the product spec sheet if your jurisdiction requires it.

Maple Electric Supply ships electrical materials across Canada from our Vaughan, Ontario warehouse. Free shipping on orders over $150 in Ontario and Quebec, 10% off orders everywhere else in Canada, and counter pickup in Vaughan. Lighting, wire, breakers, controls, heating, EV charging and tools for electricians, builders and facility teams.