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Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Subgroup:
- General Terminals
- Product Type:
- Nylon Insulated Ring Terminal - 90 Degree Bend
- Wire Size:
- 4AN
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Yellow
- Product Material:
- Nylon
Sta-Kon RF10721U – Frequently Asked Questions
1) What wire size does the Sta-Kon RF10721U take?
The barrel is sized for 4 AWG conductor. Don't double up smaller strands to fill it out, and don't force a 2 AWG cable in; use the terminal matched to the conductor so the crimp holds its pull-out rating.
2) Why would I choose a 90 degree ring terminal instead of a straight one?
The RF10721U is a flag style terminal, bent 90 degrees between the barrel and the ring. That turns the wire run parallel to the mounting surface instead of straight out from the stud, which is how you land a cable in a shallow enclosure, behind a panel cover, or on a stud where a straight barrel would hit the door. If you have depth to work with, a straight ring terminal of the same wire and stud size is simpler to crimp and route.
3) Is this ring terminal insulated, and what is the sleeve made of?
The insulation is nylon, in yellow. Nylon sleeving takes crimp expansion and handling abuse better than vinyl, which is why it's the common choice on larger gauge terminations in motor connection boxes and control panels.
4) What part number do I order to match a Sta-Kon 5/16 flag ring terminal already installed in my panel?
The manufacturer part number is RF10721U. That's the identifier to quote for a direct match: nylon insulated ring terminal, 4 AWG barrel, 5/16 inch stud, 90 degree bend. The terminals are made in Mexico.
5) Do I need a special crimper for a 4 AWG insulated ring terminal?
Yes. A 4 AWG barrel is well past the range of a hand-squeeze insulated terminal tool. Plan on a hydraulic or ratcheting heavy-gauge crimper with the die matched to 4 AWG, and crimp over the barrel so the nylon sleeve stays on the wire. A light crimp on a conductor this size is the usual cause of a hot termination.
How fast can I get the Sta-Kon RF10721U 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 RF10721U come with a warranty?
Absolutely. The Sta-Kon RF10721U 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 RF10721U?
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 RF10721U 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.