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Sealing Locknut · 1-1/2 in · Steel Zinc-Plated · Hubbell LNS150
SKU: LNS150
1-1/2 in steel sealing locknut for securing threaded rigid conduit or fittings to an enclosure where a tighter liquid-tight seal is needed. Commonly used with rigid conduit and IMC in wet or damp locations; confirm compatibility with the fitting and enclosure arrangement.
What this product is for
This 1-1/2 in sealing locknut is used to secure threaded conduit fittings, rigid conduit, or IMC to an enclosure while adding a sealing interface for liquid-tight applications. It is suited to trade installations where a standard locknut is not enough for the enclosure entry detail.
Use for
Use for 1-1/2 in trade size threaded entries, panel and enclosure terminations, and liquid-tight conduit connections where a sealing locknut is specified. Typical applications include rigid conduit and IMC terminations in commercial and industrial work.
Avoid for
Avoid using this as a substitute for a standard locknut where no sealing function is required, or on mismatched thread types and sizes. Do not assume liquid-tight performance unless the full fitting, enclosure, and installation method are suitable for the application and local code.
Best for
Best for electricians needing a steel locknut with sealing function for 1-1/2 in conduit entries. It is a practical choice when terminating threaded fittings to cabinets, pull boxes, or other enclosures in areas exposed to moisture.
Installed in
Installed in electrical enclosures, cabinets, junction boxes, pull boxes, and control panels with 1-1/2 in threaded conduit or fitting entries. Size reference: 1-1/2 in trade size is approximately 41 mm.
Why this product exists
This product exists to lock threaded conduit components to an enclosure while helping create a tighter sealed connection than a standard locknut alone. For buyers comparing options, the key decision point is whether the installation needs sealing performance in addition to mechanical retention.
Compared with similar products
Compared with a standard steel locknut, a sealing locknut is intended for applications where moisture resistance matters. Compared with non-metallic options, this steel version is typically selected where metal raceway systems and threaded rigid or IMC fittings are already being used.
Specifications
- Product type: Sealing locknut
- Trade size: 1-1/2 in (approximately 41 mm)
- Material: Steel
- Finish: Zinc plated
- Application: Liquid-tight conduit terminations
- Use with: Threaded fittings, rigid conduit, or IMC to enclosures
- Brand: Hubbell TradeSelect
- Manufacturer part number: LNS150
Selection guidance: choose a sealing locknut when the enclosure entry needs both mechanical retention and a sealing function. Actual performance depends on the fitting used, enclosure condition, installation method, and local electrical code.
Minimum Order $20
We accept the following 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 
Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.
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
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(Updated August 2026)
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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