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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Subgroup:
- General Terminals
- Product Type:
- Vinyl Insulated Ring Terminal
- Standards:
- UL E9809
- Wire Size:
- 12-10 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Yellow
- Product Material:
- Copper
Sta-Kon RC337M – Frequently Asked Questions
1) What wire gauge does the Sta-Kon RC337M ring terminal take?
The RC337M is sized for 12-10 AWG conductor. That range is what the yellow insulation signals on standard vinyl terminal color coding, so if you are crimping 16-14 AWG you want a blue-bodied terminal instead, and 22-18 AWG takes a red one. Crimping 14 AWG into a 12-10 barrel will not hold.
2) Is the RC337M terminal UL recognized?
It carries UL file E9809. That is the reference an inspector or a spec writer will want when the panel schedule calls for listed terminations.
3) Is the Sta-Kon RC337M barrel copper or aluminum?
Copper. That makes it a copper-conductor terminal, so use it on copper wire only, not on aluminum branch conductors, which need a terminal rated AL or AL/CU.
4) Can I use a ring terminal like the RC337M instead of a spade on a panel terminal strip?
A ring is the right call anywhere the connection is subject to vibration or where a loose lug cannot be allowed to back off the screw, since the ring is captive once the screw is tightened. A spade or fork terminal only makes sense when you need to service the connection without fully removing the screw. For motor leads, grounding screws, and equipment terminal boards, the ring is the standard choice, and the RC337M covers 12-10 AWG on a No. 6 stud.
5) What does the Mylar in the RC337M part description mean for installation?
The RC337M is a vinyl insulated ring terminal with a Mylar-lined sleeve. The liner sits between the vinyl and the copper barrel so the insulation does not split or extrude when the crimp tool closes on it. Practically, it means you crimp it the same way as any insulated ring, in the insulated-barrel nest of the tool, not the bare-terminal nest.
6) Are these Sta-Kon ring terminals made in the USA?
Country of origin on the RC337M is the United States, which matters if you are buying against a domestic-preference clause on a government or institutional job.
How fast can I get the Sta-Kon RC337M 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 Sta-Kon RC337M come with a warranty?
Absolutely. The Sta-Kon RC337M 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 Sta-Kon RC337M?
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 Sta-Kon RC337M from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
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every order.
Our team is always ready to help you choose the right product for your project.