You may also like
INS VIN FORK TERM 18-14 No8 BLUE
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Subgroup:
- General Terminals
- Product Type:
- Vinyl Insulated Fork Terminal
- Standards:
- UL E9809
- Voltage Rating:
- 600 V
- Wire Size:
- 18-14 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Blue
- Product Material:
- Copper
Sta-Kon RB657 – Frequently Asked Questions
1) What wire gauge does the Sta-Kon RB657 fork terminal crimp?
The RB657 takes 18-14 AWG stranded copper wire. That is the blue insulation color code, so if you are sorting a bin by color, blue means the 16-14 AWG band in Sta-Kon's range of 18-14. For 22-18 AWG you need a red terminal, and for 12-10 AWG a yellow one.
2) What screw size does the RB657 fork terminal fit?
It is a No. 8 stud terminal, so the fork slips over a #8 screw or stud. Terminal blocks, contactors, and device screws sized for #8 hardware take it directly. A #10 stud is too large for the fork opening.
3) Is the Sta-Kon RB657 UL listed for use in a control panel?
It carries UL file E9809. That is the recognition reference an inspector or panel-shop QA will ask for when the terminations are reviewed.
4) Can I use a fork terminal like the Sta-Kon RB657 on a 480V control circuit?
Yes. The RB657 is rated 600 V, which covers 120, 240, and 480 V control and power terminations within that limit.
5) Should I use a fork terminal or a ring terminal on a terminal strip?
A fork (spade) terminal like the RB657 slides under a loosened #8 screw without removing it, which is why panel builders and controls techs prefer it on dense terminal strips and device screws where you service connections often. A ring terminal has to come off the stud entirely, but it cannot vibrate loose sideways, so ring is the choice on motor leads, grounding studs, and anything subject to vibration.
6) Is the Sta-Kon RB657 terminal copper or aluminum?
Copper barrel with vinyl insulation. Use it on copper conductors only. Aluminum wire needs an AL/CU rated connector with the appropriate inhibitor compound.
7) Do I need a special crimper for Sta-Kon vinyl insulated terminals?
Use an insulated-terminal crimp tool with the color-coded nest matching blue (18-14 AWG). The vinyl sleeve on the RB657 is meant to be compressed along with the barrel, so a bare-terminal or open-barrel die will cut the insulation and give you an unreliable joint. No heat and no solder required.
8) Is the Sta-Kon RB657 made in the USA, and what part number do I order?
Order it as manufacturer part RB657, Sta-Kon brand, with a country of origin of the United States. That origin matters on government and institutional work with domestic-content requirements.
How fast can I get the Sta-Kon RB657 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 RB657 come with a warranty?
Absolutely. The Sta-Kon RB657 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 RB657?
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 RB657 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.