Thomas & Betts 147 2-1/2" Mall...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$20.67

Thomas & Betts 147 2-1/2" Malleable Iron Conduit Locknut

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Model: TB147

In Stock (leaves warehouse same day if ordered before 3pm ET)

$20.67
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Thomas & Betts 147 2-1/2" Malleable Iron Conduit Locknut

The Thomas & Betts 147 is a 2-1/2" locknut manufactured from malleable iron, engineered to secure conduit fittings, connectors, and hubs to electrical boxes, panels, and enclosures. This trade size 2-1/2" locknut threads directly onto the threaded body of a conduit fitting or connector, allowing installers to draw the fitting tight against the wall of a box or enclosure for a firm mechanical connection. Malleable iron construction gives this locknut the strength and corrosion resistance needed for demanding commercial, industrial, and institutional electrical installations. The 147 locknut is a straightforward, cost-effective accessory for completing a secure conduit-to-enclosure connection. Electrical contractors specify this locknut wherever a dependable, code-compliant connection is required for 2-1/2" conduit fittings, connectors, and hubs on the jobsite.

Key Features

  • Trade Size: 2-1/2" sized to match standard 2-1/2" conduit fittings, connectors, and hubs for a precise threaded fit.
  • Durable Construction: Malleable iron material resists corrosion and physical damage, supporting long service life in demanding electrical environments.
  • Threaded Locknut Design: Internal threads engage the fitting's threaded body, allowing the locknut to be drawn up tight against the box or enclosure wall for a secure mechanical hold.
  • Reliable Connection: A properly tightened locknut helps maintain a firm, stable mechanical connection between the conduit fitting and the enclosure wall, supporting a dependable electrical raceway system.
  • Model 147: Part of the Thomas & Betts line of conduit fitting accessories engineered for professional electrical installations.
  • Field-Ready Installation: Hand- or wrench-tightened design allows quick, straightforward installation on the jobsite without specialty tools.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Conduit and Raceway Systems
  • Panelboard, Switchboard, and Enclosure Wiring
  • Commercial and Industrial Electrical Installations
  • Renovation and Retrofit Projects
  • New Construction Electrical Rough-In

Why Thomas & Betts?

Thomas & Betts builds the 147 locknut from malleable iron to withstand the rigors of professional electrical work, delivering a dependable mechanical connection between conduit fittings and enclosures. The threaded locknut design makes for straightforward, repeatable installation whether on new construction, renovation, or retrofit projects. Electricians and contractors trust Thomas & Betts conduit fitting accessories, including the 2-1/2" model 147 locknut, for consistent quality and code-compliant performance on commercial, industrial, and institutional jobs.

Manufacturer Resources

Product Specs

list_batch:
TB-20260918
Product Type:
Locknut
Department:
Electrical
Product Subgroup:
Conduit Fittings
Product Material:
Malleable Iron
Product Size:
2-1/2"
Product Group:
Conduit & Raceway

Thomas & Betts TB147 – Frequently Asked Questions

1) Will the Thomas & Betts 147 locknut fit a 2-1/2 inch rigid conduit connector?
Yes. The T&B 147 is a trade size 2-1/2 inch locknut, so it threads onto the body of any standard 2-1/2 inch conduit fitting, connector or hub and draws it tight against the box or enclosure wall. Trade size has to match exactly, so a 2 inch or 3 inch fitting needs the corresponding locknut, not this one.
2) Is the T&B 147 locknut steel or malleable iron?
Malleable iron. That is the heavier-duty option for a locknut this size, and it is what holds up in commercial and industrial panel and enclosure work where a stamped steel nut can distort when you wrench it down.
3) Does a locknut alone make up the conduit-to-box connection, or do I need more parts?
The locknut is only the retaining piece. The 147 secures a 2-1/2 inch connector, fitting or hub to the box or panel wall; you still need the fitting itself, and in many installations a second locknut and/or a grounding or sealing bushing on the inside of the enclosure depending on how the connection is being made up.
4) Do I need any special tools to install a 2-1/2 inch conduit locknut?
No specialty tooling. The 147 is hand-started on the fitting thread and then drawn up with a wrench or channel locks against the enclosure wall. Nothing else is required beyond the fitting or hub it threads onto.
How fast can I get the Thomas & Betts TB147 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Thomas & Betts TB147 come with a warranty?
Absolutely. The Thomas & Betts TB147 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Thomas & Betts TB147?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Thomas & Betts TB147 from ZenSupply?
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