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Rod Coupling 3/8-16 Hx St-zn (Box 1000)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Box
- Product Group:
- Hangers, Supports & Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Hex Bolts & Nuts
- Product Type:
- Rod Coupling
Metallics RCT28M – Frequently Asked Questions
1) What thread size does the Metallics RCT28M rod coupling take?
The RCT28M rod coupling is threaded 3/8-16, so it joins standard 3/8 inch diameter all-thread hanger rod with 16 threads per inch. Both ends share the same thread, so it butts two lengths of 3/8-16 rod together rather than adapting between sizes. If your rod is 1/2-13 or 1/4-20, this is the wrong coupling.
2) Can I use a rod coupling to extend hanger rod instead of ordering longer rod?
That is exactly what the RCT28M does. Threading two cut lengths of 3/8-16 rod into one coupling gives you a continuous run, which is how most crews handle drops that came up short or ceilings higher than stock rod length. Run the rod in far enough on each side that the ends meet near the middle of the coupling so the joint develops full thread engagement.
3) Is the Metallics RCT28M coupling a hex body or round?
Hex. The RCT28M is a hex-bodied steel rod coupling, which means you can run a wrench on it to drive the coupling onto the rod instead of turning it by hand. That matters on overhead hanger work where you are extending rod from a strut or concrete insert.
4) Are Metallics RCT28M rod couplings zinc plated for damp interior runs?
They are steel with a zinc plating, which is the usual finish for interior hanger rod couplings on conduit, pipe, and trapeze supports. Zinc plated steel is not a substitute for galvanized or stainless in exterior or wash-down locations.
5) How many Metallics RCT28M rod couplings come in a box?
The RCT28M ships as a box of 1000 couplings, so it is a bulk buy sized for a contractor stocking a truck or a jobsite doing a large overhead hanger run, not a single-fix purchase.
6) Will the Metallics RCT28M work with 3/8 inch threaded rod beam clamps and conduit hangers?
Yes, as long as the mating hardware is 3/8-16. Beam clamps, concrete inserts, rod hangers, and strut nuts made for 3/8 inch rod use that same 3/8-16 thread, so the coupling threads straight onto them. The coupling only joins thread; it does not provide the attachment point itself.
7) Is there only one model of the Metallics rod coupling, or are there options to pick?
There is one configuration to order here: model RCT28M, 3/8-16 hex steel zinc. No finish or length choices to specify. If you need a different rod diameter, you need a different Metallics coupling part number.
How fast can I get the Metallics RCT28M 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 Metallics RCT28M come with a warranty?
Absolutely. The Metallics RCT28M 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 Metallics RCT28M?
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 Metallics RCT28M 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.