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Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- 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 RF737 – Frequently Asked Questions
1) What wire size does the Sta-Kon RF737 ring terminal take?
The RF737 is built for 4 AWG copper conductor. It is a single-size barrel, so it won't crimp down reliably on 6 AWG or smaller strand, and 2 AWG won't enter the barrel. If your feeder is a different gauge, move to the matching ring terminal for that size rather than forcing this one.
2) Is the RF737 terminal copper or aluminum, and can I put it on aluminum conductor?
The barrel is copper, so it is for copper conductor only. Aluminum feeder needs an AL-rated or AL9CU dual-rated terminal instead; crimping copper onto aluminum invites galvanic corrosion at the joint.
3) Can I use the RF737 ring terminal on a 480 volt panel?
It is rated 600 V, so 480 V three-phase and all common 120/208 and 277/480 building circuits are within rating. Insulation rating is on the terminal itself; the conductor insulation and any sleeving still have to carry their own rating for the circuit.
4) Do I need a special crimper for a 4 AWG nylon insulated ring terminal?
Yes. At 4 AWG the RF737 is past the range of a hand pliers-style insulated crimper. You need a heavy duty ratcheting or hydraulic crimp tool with the die that covers 4 AWG insulated terminals. A partial crimp on a 4 AWG barrel is the usual cause of a hot termination, so match the tool to the barrel size.
5) What is the difference between a ring terminal like the RF737 and a fork or spade terminal?
The RF737 is a closed ring: the bolt passes through the hole, so the connection cannot vibrate off the stud even if the nut backs off slightly. A fork or spade slips on and off without removing the nut, which is faster for service work but is not acceptable where vibration or a captive connection matters. For a 4 AWG feeder landing on a 3/8 inch stud, the closed ring is the right choice.
6) Why is the Sta-Kon RF737 yellow?
Yellow is the standard color code for the heavier wire range on nylon insulated terminals, and on the RF737 it corresponds to 4 AWG. The nylon sleeve is yellow throughout, so an inspector or the next electrician can read the wire range off the termination without pulling it apart. It is a color-code identifier, not a decorative finish.
7) Where is the Sta-Kon RF737 made?
Manufactured in Mexico. Buyers working to domestic-content or procurement-origin rules should note that for their documentation.
How fast can I get the Sta-Kon RF737 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 RF737 come with a warranty?
Absolutely. The Sta-Kon RF737 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 RF737?
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 RF737 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.