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Rod Coupling 3/8-16 To 5/16-18 Reduce Hx St-zn (Jar 50)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Hangers, Supports & Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Hex Bolts & Nuts
- Product Type:
- Rod Coupling
Metallics RCTR27 – Frequently Asked Questions
1) What thread sizes does the Metallics RCTR27 reducing rod coupling join?
The RCTR27 is a reducing coupling that joins 3/8-16 threaded rod on one end to 5/16-18 rod on the other. Both ends are standard UNC coarse thread, so it mates with ordinary all-thread hanger rod in those two diameters.
2) Can I use a reducing rod coupling to step down from 3/8 inch hanger rod to 5/16 inch?
That is exactly what the RCTR27 does. Thread the 3/8-16 rod into one end and 5/16-18 rod into the other, and you transition sizes without welding or a plate. Use it where an existing 3/8 inch drop has to pick up smaller rod for a lighter run, or where the fixture or strut hardware is tapped 5/16-18. If both ends of your run are the same diameter, you want a straight coupling instead, not this reducer.
3) Is the Metallics RCTR27 coupling steel or stainless, and is it plated for damp locations?
It's steel with a zinc plating. Zinc plated steel is fine for dry and normally damp interior work such as conduit and fixture hanger rod inside a building, but it is not a stainless or hot dip galvanized part, so for exterior, wet, or corrosive areas you should specify a stainless or galvanized coupling instead.
4) How is the Metallics RCTR27 packaged for shop stock?
It ships as a jar of 50 couplings, which is the way most electrical and mechanical contractors stock small threaded fittings on the truck or in the crib. Keep in mind you are buying a jar quantity, not a single piece.
5) Will a reducing rod coupling work as a structural splice for hanging conduit or fixtures?
The RCTR27 is a threaded rod connector, used to join two lengths of all-thread in a hanger assembly, including stepping from 3/8-16 down to 5/16-18. It is not a load rated anchor and it does not replace the beam clamp, insert, or anchor at the structure. Build the drop the usual way: anchor at the deck, rod, coupling where the size changes, then the hanger or fixture hardware at the bottom.
6) Does the RCTR27 rod coupling have a hex body I can get a wrench on?
Yes, the body is hex rather than round, so you can hold it with a wrench or socket while you run rod in from either side. That matters when you are tightening an overhead drop and need to keep the coupling from spinning with the rod.
How fast can I get the Metallics RCTR27 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 RCTR27 come with a warranty?
Absolutely. The Metallics RCTR27 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 RCTR27?
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 RCTR27 from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.