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Thomas & Betts Aluminum Grounding Hub with Locknut
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Thomas & Betts 3/4 Inch Aluminum Grounding Hub with LocknutProfessional Conduit Connection & Grounding SolutionThe Thomas & Betts 3/4 inch aluminum grounding hub provides reliable conduit connection...
Thomas & Betts
Starting at
$48.60
1-1/4 INCH LOCKNUT,SEALING
Manufacturer Resources
Product Specs
- Number Of Batteries:
- 0
- Product Group:
- Conduit & Raceway
- Department:
- Electrical
- Product Subgroup:
- Conduit Fittings
- Product Type:
- Locknut
Thomas & Betts 141SL – Frequently Asked Questions
1) What sizes does the Thomas & Betts sealing locknut come in?
Six trade sizes: 1/2 inch (141SL), 3/4 inch (142SL), 1 inch (143SL), 1-1/4 inch (144SL), 1-1/2 inch (145SL), and 2 inch (146SL). Order by the trade size of the conduit or fitting thread you are locking down, not by the knockout diameter.
2) What is the difference between a sealing locknut and a standard steel locknut?
A standard locknut just grips the threads and bites the enclosure wall for a mechanical and bonding connection. A sealing locknut like the T&B 141SL series carries a gasket that compresses against the box or enclosure wall to close off the knockout, so you get a liquid and dust resistant joint at the entry. Use the sealing type where moisture or washdown can reach the enclosure; a plain steel locknut is fine for dry indoor work.
3) Which Thomas & Betts part number is the 1-1/4 inch sealing locknut?
144SL is the 1-1/4 inch size in the T&B sealing locknut series. The 1 inch is 143SL and the 1-1/2 inch is 145SL, so the numbering steps up with trade size from 141SL at 1/2 inch.
4) Will a sealing locknut work on rigid and IMC conduit threads?
Yes. These locknuts thread onto standard NPT conduit thread, so they take rigid metal conduit, IMC, and the male threaded hubs on EMT connectors and nipples in the matching trade size. Match the locknut size to the thread size: a 3/4 inch run takes the 142SL.
5) Do I still need a bushing or a bonding locknut if I use a sealing locknut?
The sealing locknut handles the outside of the enclosure wall. Inside the box you still install the insulating bushing or insulated throat the conduit entry requires to protect conductors, and if the circuit needs a bonding path beyond the standard locknut and threaded connection, that bonding means is a separate item. Order the bushing in the same trade size, 1/2 through 2 inch to match the locknut.
6) Which sealing locknut do I use on a 2 inch conduit entry into a wet location panel?
The 2 inch size is part number 146SL, the largest in the series. It is the right pick for sealing a 2 inch threaded entry where the gasketed joint keeps water out of the enclosure. Below that, 145SL covers 1-1/2 inch.
How fast can I get the Thomas & Betts 141SL 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 141SL come with a warranty?
Absolutely. The Thomas & Betts 141SL 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 141SL?
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