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INS NYL RING TERM, 4, 1/2, YELLOW
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Subgroup:
- General Terminals
- Product Type:
- Nylon Insulated Ring Terminal
- Standards:
- UL E9809
- Voltage Rating:
- 600 V
- Wire Size:
- 4 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Yellow
- Product Material:
- Copper
Sta-Kon RF757 – Frequently Asked Questions
1) What wire size does the Sta-Kon RF757 ring terminal take?
The RF757 is sized for 4 AWG conductor. It's a nylon insulated ring terminal with a copper barrel, so it crimps onto stranded copper 4 AWG. If your feeder is 6 AWG or 2 AWG, this is the wrong barrel size, use the terminal built for that gauge instead.
2) Is the Sta-Kon RF757 rated for 600 volt control and power circuits?
The RF757 carries a 600 V rating and is UL listed under file E9809, so it's usable on standard 120/208, 277/480 and control wiring inside that limit. For institutional and MRO spec sheets, that UL file number is the one to cite.
3) Can I crimp the Sta-Kon RF757 with a standard hand tool?
At 4 AWG the RF757 is past the range of small plier-style crimpers. It needs a heavy duty crimper sized for 4 AWG copper barrels, hydraulic or a long-handled ratchet tool with the right die. Plan the tool into the job, the terminal ships bare.
4) Can the Sta-Kon RF757 be used on aluminum conductor?
No. The barrel is copper, so the RF757 is a copper-only terminal. For aluminum or AL/CU feeders you need a dual-rated compression lug, not this part.
5) What is the yellow insulation on a 4 AWG ring terminal supposed to indicate?
Yellow on the RF757 is the color code for the 4 AWG barrel. Electricians use the sleeve color to confirm gauge at a glance in a panel, and on this part the nylon sleeve is yellow. Nylon also takes flexing and abrasion better than vinyl in a tight gutter.
6) Is the Sta-Kon RF757 made in the USA?
Yes, the RF757 ring terminal is of United States origin, which matters on government, federal and Buy American funded work where domestic sourcing has to be documented.
7) What is the exact part number to order this Sta-Kon yellow ring terminal?
Order it as Sta-Kon RF757. One configuration only, no finish or size options to specify: 4 AWG, 1/2 inch stud, yellow nylon insulation.
How fast can I get the Sta-Kon RF757 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 RF757 come with a warranty?
Absolutely. The Sta-Kon RF757 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 RF757?
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 RF757 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.