Thomas & Betts 3/4 Inch Case H...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$51.95
$1.66
Thomas & Betts 142-TB 3/4 INCH CASE HARDENED LOCKNUT

Thomas & Betts 3/4 Inch Case Hardened Locknut - Professional Grade Electrical Hardware

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Model: 142-TB
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$51.95
$1.66
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Thomas & Betts 3/4 Inch Case Hardened Locknut

Professional Grade Electrical Hardware for Secure Conduit Connections

The Thomas & Betts 3/4 inch case hardened locknut delivers reliable conduit securing performance for professional electrical installations. This case hardened locknut provides enhanced durability and corrosion resistance, ensuring long-lasting secure connections in demanding electrical applications.

Professional Features & Benefits

  • 3/4 Inch Threading: Standard electrical trade size ensures compatibility with common conduit and connector systems
  • Case Hardened Construction: Enhanced surface hardness provides superior wear resistance and extended service life
  • Professional Grade Design: Engineered for reliable performance in commercial and industrial electrical installations
  • Corrosion Resistant Finish: Case hardening process improves resistance to environmental factors and moisture
  • Secure Locking Action: Provides positive mechanical connection to prevent loosening under vibration
  • Thomas & Betts Quality: Manufactured to professional electrical industry standards for consistent performance

Technical Specifications

  • Department: Electrical
  • Number Of Batteries: 0
  • Product Group: Hardware
  • Product Subgroup: Locknuts
  • Product Type: Locknuts

Professional Applications

  • Commercial Electrical Installations
  • Industrial Conduit Systems
  • Residential Electrical Projects
  • Maintenance and Repair Operations
  • Panel and Junction Box Connections
  • Outdoor Electrical Enclosures

Why Choose Thomas & Betts Quality?

Thomas & Betts delivers proven reliability in electrical hardware solutions with professional-grade construction and consistent performance. The case hardened finish ensures durability in demanding applications, providing the dependable connection security that electrical professionals trust.

Manufacturer Resources

Product Specs

Number Of Batteries:
0
Product Group:
Conduit & Raceway
Product Type:
Locknut
Department:
Electrical
Product Subgroup:
Conduit Fittings

Thomas & Betts 142-TB – Frequently Asked Questions

1) Does the 142-TB locknut provide the bonding path, or do I still need a bonding bushing?
The 142-TB is a securing locknut. Its teeth bite the enclosure to pull the connector tight and keep it from backing out under vibration, which is what Thomas & Betts specifies it for. It is not described as a grounding or bonding locknut, so where your installation calls for a bonding means on the raceway, specify a grounding bushing or bonding locknut for that purpose and use the 142-TB for mechanical securing.
2) How many 3/4 inch locknuts do I need per box connector?
Standard practice is two per connection when you are landing a conduit connector through a knockout: one inside the box and one outside, tightened against the enclosure wall to pull the fitting up solid. Where the connector has a shoulder that seats on the outside of the box, one locknut inside the enclosure is enough. The 142-TB is a plain 3/4 inch locknut, so count accordingly on panel and junction box work.
3) What does case hardened mean on a locknut, and why pick it over a plain stamped one?
Case hardening gives the locknut a harder surface layer, so the teeth and thread flanks resist deforming when you drive it tight with a screwdriver and hammer or a locknut wrench. On the 142-TB that means less rounding of the lugs on install and better holding against vibration in industrial conduit runs. A soft stamped locknut is easier to chew up on the first pass.
4) Can this 3/4 inch locknut be used in outdoor or damp electrical enclosures?
Thomas & Betts lists outdoor electrical enclosures among the applications for the 142-TB, and the case hardening process improves its resistance to moisture and environmental exposure. Keep in mind a locknut is a mechanical fastener, not a seal, so wet location raintight performance comes from the connector and any sealing washer or hub you pair it with, not from the locknut.
5) What is the exact part number to order for the Thomas & Betts 3/4 inch case hardened locknut?
Order it as Thomas & Betts 142-TB. That single model number covers the 3/4 inch case hardened locknut, with no finish or variant choices to specify on the order.
How fast can I get the Thomas & Betts 142-TB 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 142-TB come with a warranty?
Absolutely. The Thomas & Betts 142-TB 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 142-TB?
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
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