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4" Steel Coupling - Black Threaded NPT

        EMT Set Screw Coupling · 4 in · Steel · Hubbell TradeSelect SKS400

        SKU: SKS400
        4 in steel EMT set screw coupling for joining two lengths of EMT conduit in dry locations. CSA certified and commonly used where a standard steel set screw fitting is required for commercial and industrial conduit runs.
        Bridgeport Electrical Fittings
        12   – Loyalty Rewards
         
        • $12.94
        Available to Order | Typically Arrives in 1 - 3 Weeks From Ontario Factory

        What this product is for

        This 4 in EMT set screw coupling is used to join two lengths of electrical metallic tubing (EMT) in dry locations. It is a steel conduit fitting intended for electrical raceway work, not for threaded rigid pipe or general plumbing service.

        Use for

        Use for 4 in EMT conduit runs in commercial, institutional, and industrial installations where a steel set screw coupling is specified. Typical applications include exposed conduit, service spaces, utility areas, and branch or feeder raceways installed in dry indoor environments.

        Avoid for

        Avoid using this coupling on threaded rigid or IMC conduit, and avoid wet-location or raintight applications unless the installation method and fitting listing specifically allow it. This is not a plumbing, gas, or HVAC pipe coupling.

        Best for

        Best for electricians and contractors needing a straightforward 4 in steel EMT coupling that matches standard EMT raceway systems and CSA-certified electrical fittings. It suits larger trade-size conduit runs where mechanical strength and fit with EMT are the main buying factors.

        Installed in

        Installed in dry indoor conduit systems in electrical rooms, commercial buildings, industrial facilities, and similar raceway installations across Canada. For large-diameter EMT, confirm space, support layout, and fitting access before assembly.

        Why this product exists

        This fitting provides a practical way to connect two sections of 4 in EMT without threading the conduit. Set screw couplings are commonly selected for dry-location EMT work where speed of installation and compatibility with standard EMT systems matter.

        Compared with similar products

        Compared with compression EMT couplings, a set screw coupling is typically chosen for dry locations rather than concrete-tight or raintight requirements. Compared with rigid or IMC couplings, this model is specifically intended for EMT conduit. As a rule of thumb, conduit fill should still be planned around a maximum 40% fill for the raceway system overall; actual installation requirements depend on conductor type, bends, and local electrical code.

        Specifications

        • Product type: EMT set screw coupling
        • Trade size: 4 in (102 mm)
        • Material: Steel
        • Application: Join two ends of EMT conduit in dry locations
        • Conduit type: EMT
        • Certification: CSA Certified
        • Brand: Hubbell TradeSelect
        • Manufacturer part number: SKS400
        • UPC: 626463035573

        Typical guidance only: set screw EMT fittings are commonly used for dry indoor raceways, while compression styles are more often selected when tighter environmental sealing is needed. Actual performance depends on installation conditions, tape method where applicable, and local electrical code.

          • SKU
            SKS400
          • Weight
            2.83 lbs
        • Trade Size
          4"
        • Type
          Steel
        • Brand
          Bridgeport Electrical Fittings
        • Warranty
          5 year

        Minimum Order $20

        We accept the following payment methods:

        Accepted payment methods

        Credit Card can offer cardholders convenience, security, rewards, and the opportunity to build a healthy credit history.

        Click here for Contractor Cash Account


        Trade Credit is a standard financing option for contractors and construction companies to obtain supplies and keep their projects moving. We offer 30-day credit terms to trade contractors on approved applications only. 

        Click here for Contractor Credit Account 


        (Contractor Accounts)

        Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas


        (All Other Accounts)

        Standard Shipping-Free on orders over $499


        Minimum Order Is $20

        Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
         

        • PVC and EMT Pipe 
        • Wire and Cable 
        • Items over 48 inches in length 

        Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.

        Shipping Options:

        • A courier can deliver to your home, office, or your job site
        • Pick up at local depot near you (applies to the following locations)

        Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB 

        Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC 

        Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.

        THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS

        • We cannot deliver to P.O. boxes.
        • A signature may be required for shipments over $500.
        • No weekend delivery.
        • Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.

        Standard Shipping cost on orders less than $499

        Total shipping cost = "Per Shipment" cost + "Per Item" cost.  The "per item" cost is listed in terms of price per pound.

         

        Product Group

        Per Shipment*

        Per Item

        Boxes

        $6.99

        $1.49/lb

        Conduit & Raceway

        $149.99

        $2.49/lb

        Connectors & Fittings

        $5.99

        $1.19/lb

        Data & Structured Home

        $5.99

        $1.19/lb

        Distribution Equipment

        $5.99

        $1.19/lb

        Emergency Lighting

        $6.99

        $1.49/lb

        Heating & Ventilation

        $6.99

        $1.49/lb

        Lighting Controls

        $5.99

        $1.19/lb

        Lighting Indoor

        $6.99

        $1.49/lb

        Lighting Outdoor

        $6.99

        $1.49/lb

        Tools

        $4.99

        $.99/lb

        Wire & Cable

        $49.99

        $2.29/lb

        Wiring Devices

        $5.99

        $1.19/lb

        Any combination of the above items

        Highest applicable per-shipment charge

        As above

        Effective Date: August, 15, 1998

        At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:

        Returns

        Defective Items:

        • If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
        • To initiate a return, please contact our customer service team with your order number and a description of the defect.

        Non-Defective Items:

        • We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.

        Return Process

        Authorization:

        • Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
        • Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.

        Shipping:

        • Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.

        Condition:

        • Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.

        Refunds

        • Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
        • Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.

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