Thomas & Betts 1257 3-1/2 TO 3...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$918.79
$67.71
Thomas & Betts 1257 3-1/2 TO 3IN FEMALE REDUCER IRON

Thomas & Betts 1257 3-1/2 TO 3IN FEMALE REDUCER IRON

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Model: 1257

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

$918.79
$67.71
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3-1/2 TO 3IN FEMALE REDUCER IRON

Manufacturer Resources

Product Specs

Number Of Batteries:
0
Product Group:
Conduit & Raceway
Product Type:
Reducer
Department:
Electrical
Product Subgroup:
Conduit Fittings
Product Material:
Malleable Iron

Thomas & Betts 1257 – Frequently Asked Questions

1) I need to go from 3 inch up to 3-1/2 inch at an enclosure hub. Is a female reducer the right part?
Only if the thread you are starting from is male. The 1257 is female on both ends, 3-1/2 inch down to 3 inch. If you are coming off a 3 inch male conduit thread and need to land in a 3-1/2 inch female hub, you want a male-to-female bushing or an increaser, not this reducer. Check which of your two threads is male before ordering.
2) Will the 1257 work on rigid metal conduit and IMC?
Yes, within the thread sizes it carries. The 1257 is a threaded malleable iron conduit fitting, so it mates with the NPT-style conduit threads cut on rigid metal conduit and IMC. It will not accept EMT, which is unthreaded and needs set-screw or compression fittings instead.
3) Is the 1257 reducer made of steel or malleable iron?
Malleable iron. That is the body material on the 1257, which is the usual choice for threaded rigid and IMC fittings where the fitting has to take mechanical abuse and thread torque without cracking.
4) Can I use the Thomas & Betts 1257 to reduce a 3-1/2 inch knockout on a panel?
No. A 3-1/2 inch knockout in sheet metal is a plain hole, not a thread, so there is nothing for the 1257 to thread onto. Reducing a knockout calls for reducing washers. The 1257 only works where there is an existing 3-1/2 inch male conduit thread.
5) How many Thomas & Betts 1257 reducers come in an order?
The 1257 is sold as a single fitting, one model with no size or finish options to pick. If you are reducing both ends of a run or standardizing several enclosures, count the openings and order one per transition.
How fast can I get the Thomas & Betts 1257 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 1257 come with a warranty?
Absolutely. The Thomas & Betts 1257 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 1257?
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 1257 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.
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