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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
- Voltage Rating:
- 600 V
- Wire Size:
- 12-10 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Yellow
- Product Material:
- Copper
Sta-Kon RC337 – Frequently Asked Questions
1) What wire size does the Sta-Kon RC337 ring terminal take?
The RC337 is sized for 12-10 AWG stranded copper conductors, and the yellow vinyl insulation is the standard color code for that range. Run anything smaller than 12 AWG and the barrel won't grip properly after crimping, so step down to a 16-14 AWG (blue) or 22-16 AWG (red) terminal for those conductors.
2) Is this ring terminal rated for 600 volt control and power circuits?
Yes, the RC337 carries a 600 V rating, which covers typical commercial control panel, motor control, and branch circuit terminations. It is UL recognized under file E9809.
3) Should I use a ring terminal or a spade terminal on a panel terminal block?
A ring terminal like the RC337 fully encircles the stud, so the connection cannot vibrate off if the screw backs out slightly. That is why ring terminals are specified for motor leads, grounding, and anything on equipment that moves or vibrates. A spade (fork) terminal is the choice when you need to pull a wire off without removing the screw entirely, which saves time on panels you service often. Both land on the same No. 6 hardware.
4) Is the RC337 terminal copper, and can I use it on aluminum wire?
The barrel is copper, which makes it a copper-only terminal. Do not crimp it onto aluminum conductors; aluminum needs a terminal marked AL9CU or AL/CU for dual rating. For copper stranded 12-10 AWG it is the correct material.
5) Do I need a special crimp tool for Sta-Kon RC337 terminals?
It is a vinyl insulated barrel terminal, so it crimps with an insulated-terminal crimper using the yellow 12-10 AWG nest. Do not use an uninsulated (non-insulated) die set, which crushes the vinyl sleeve and leaves the barrel under-crimped. Strip to the barrel length, seat the conductor fully, and crimp once over the barrel.
6) Is the Sta-Kon RC337 made in the USA for a Buy American spec?
Country of origin on the RC337 is the United States, which is what a government or institutional buyer working to a domestic-sourcing clause needs on the submittal.
7) What is the exact part number to order for a yellow 12-10 AWG No. 6 ring terminal from Sta-Kon?
Order Sta-Kon RC337. That designation covers the vinyl insulated ring terminal for 12-10 AWG copper wire with a No. 6 stud tongue in yellow.
How fast can I get the Sta-Kon RC337 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 RC337 come with a warranty?
Absolutely. The Sta-Kon RC337 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 RC337?
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 RC337 from ZenSupply?
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