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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)Mexico (MX)
- Product Subgroup:
- General Terminals
- Product Type:
- Nylon Insulated Ring Terminal
- Wire Size:
- 4 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Yellow
- Product Material:
- Nylon
Sta-Kon RF737NP – Frequently Asked Questions
1) What wire size does the Sta-Kon RF737NP ring terminal take?
The RF737NP is sized for 4 AWG conductor. It is a single-wire-size terminal, so smaller wire like 6 or 8 AWG will not crimp reliably in this barrel, and anything larger won't enter it. Match the terminal to the actual conductor gauge, not the cable jacket size.
2) What is the difference between a nylon insulated ring terminal and a vinyl one?
Both do the same electrical job, but the insulator material is the deciding factor. The RF737NP uses nylon, which is tougher against abrasion and handles higher temperatures and solvent or fuel contact better than vinyl. For a cabinet or junction box where terminals get pulled through conduit, bundled, or exposed to heat, nylon is the one to spec. Vinyl is the cheaper choice for clean, low-stress indoor terminations.
3) Why choose a ring terminal instead of a fork terminal for a 4 AWG connection?
A ring tongue has to be unbolted to come off, so it cannot vibrate or be pulled free the way a spade or fork terminal can. On 4 AWG runs, which are typically feeders, grounds, or battery and motor leads carrying real current, that matters. Use a fork only where you need to drop a wire off a terminal block quickly without removing the screw.
4) Is the Sta-Kon RF737NP tin plated or nickel plated, and when does that matter?
This one is nickel plated. Nickel holds up at higher operating temperatures and resists oxidation better than tin, which is why it gets specified for heater circuits, motor terminations, and anywhere the connection runs hot. If your spec calls out a tin-plated copper terminal, this is not a drop-in on paper even though the ring and barrel geometry are the same.
5) Can I crimp the Sta-Kon RF737NP with hand pliers?
No. A 4 AWG barrel needs a heavy crimp tool with the correct die nest for the gauge, typically a ratcheting or hydraulic crimper. Common electrician's combination pliers or a light insulated-terminal hand tool will not deform the barrel enough to make a mechanically sound, low-resistance termination on wire this size.
6) Is the yellow insulation on this 4 AWG ring terminal color coded, and what does yellow mean?
The RF737NP uses a yellow nylon insulator. On nylon-insulated terminals yellow is the heavy-gauge color band, which is what tells an electrician at a glance that it is a large-conductor terminal and which crimp die nest to use on the tool.
7) What is the manufacturer part number and country of origin for this Sta-Kon ring terminal?
Order it as Sta-Kon RF737NP. Manufacturing is sourced from the United States and Mexico, which is the detail that matters if you are filling a government or institutional order with domestic-content documentation requirements.
How fast can I get the Sta-Kon RF737NP 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 RF737NP come with a warranty?
Absolutely. The Sta-Kon RF737NP 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 RF737NP?
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 RF737NP from ZenSupply?
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