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Manufacturer Resources
Product Specs
- Number Of Batteries:
- 0
- Product Type:
- Locknut for Conduit Fitting
- Department:
- Electrical
- Product Group:
- Conduit & Fittings
- Product Subgroup:
- Conduit Bodies
- Product Type2:
- Locknut for Conduit Fitting
- Product Size:
- 1 Inch
Steel City LG 403 – Frequently Asked Questions
1) What size conduit does the Steel City LG 403 grounding locknut fit?
The LG 403 is a 1 inch grounding locknut, so it threads onto 1 inch rigid or IMC conduit and 1 inch threaded fittings. For any other trade size you need a different part number in the series, since the thread is size-specific and will not cross over.
2) What is the difference between a grounding locknut and a standard conduit locknut?
A standard locknut just mechanically secures the conduit or fitting to the enclosure. The Steel City LG 403 is a grounding locknut, which adds a lug so you can land a bonding conductor at the enclosure knockout and carry equipment ground across the connection. If you are only clamping a connector to a box and grounding is handled elsewhere, a plain steel locknut is the cheaper part.
3) Will the LG 403 grounding locknut work on EMT?
It is made for rigid and IMC threads. EMT is not threaded, so the LG 403 does not go on EMT directly. It can still be used on the threaded body of an EMT connector where that connector takes a 1 inch locknut, but for the conduit itself you want a fitting rated for EMT.
4) What is the exact part number to order for a 1 inch Steel City grounding locknut?
Order Steel City LG 403. That is the manufacturer part number, and the 1 inch size is built into it, so there is no separate size option to select.
5) Is the Steel City LG 403 locknut steel or malleable iron?
Steel. The LG 403 is a steel-bodied grounding locknut, which is what you want on rigid and IMC runs in commercial and industrial work.
How fast can I get the Steel City LG 403 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 Steel City LG 403 come with a warranty?
Absolutely. The Steel City LG 403 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 Steel City LG 403?
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 Steel City LG 403 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.