Thomas & Betts 149AL Bushings Knockout Seals Locknuts Ea Nsb

Description:

The Thomas & Betts 149AL Conduit Locknut is used to securely fasten 3-1/2-inch rigid metal conduit (RMC) and intermediate metal conduit (IMC) fittings to electrical enclosures while providing a reliable mechanical connection and electrical bond. Commonly installed in commercial buildings, industrial facilities, power distribution systems, and manufacturing plants, this threaded locknut is manufactured from degreased copper-free aluminum for superior corrosion resistance and long service life. Electricians, maintenance technicians, and electrical contractors use this locknut for new installations, repairs, retrofits, and replacement of conduit fastening hardware.

Applications:

The Thomas & Betts 149AL is designed to secure externally threaded conduit fittings and connectors to threadless openings in electrical boxes, cabinets, panelboards, and enclosures. It provides dependable mechanical retention and electrical bonding, making it ideal for indoor and outdoor conduit systems used in commercial, industrial, utility, and OEM electrical installations.

Technical Specifications:

• Manufacturer Part Number (MPN): 149AL
• Brand: Thomas & Betts (ABB)
• Product Type: Conduit Locknut
• Trade Size: 3-1/2 in.
• Conduit Compatibility: Rigid Metal Conduit (RMC), Intermediate Metal Conduit (IMC)
• Installation Type: Threaded
• Material: Degreased Copper-Free Aluminum (624 Alloy)
• Diameter: 4-13/16 in.
• Thickness: 15/32 in.
• Finish: Natural Aluminum
• Function: Secures threaded conduit or connectors to electrical enclosures while providing electrical bonding
• Features: Corrosion-resistant construction, resists deformation during tightening, lightweight aluminum design
• Standards: UL 514B Listed, CSA C22.2 Certified, NEMA FB-1 Compliant, NFPA 70 Compatible
• Package Type: Each (EA)
• Typical Applications: Electrical Panels, Junction Boxes, Switchboards, Industrial Facilities, Commercial Buildings, Utility Installations, OEM Equipment

Common Replacements:

• Thomas & Betts 148AL
• Thomas & Betts 150AL
• Thomas & Betts 149