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INS NYL FORK TERM FLG 18-14 No10
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Subgroup:
- General Terminals
- Product Type:
- Nylon Insulated Flanged 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 RB1253 – Frequently Asked Questions
1) What wire gauge does the Sta-Kon RB1253 fork terminal crimp onto?
The RB1253 is sized for 18 to 14 AWG stranded copper wire. The blue nylon insulation is the standard color code for that range, so if you are looking at a bin of mixed terminals, blue means 16-14 class on most lines. Anything heavier than 14 AWG will not seat in the barrel and will not crimp reliably.
2) What screw or stud size does the RB1253 fork terminal fit?
It is a No. 10 fork, so it slips over a #10 screw or stud. That covers most terminal blocks, control panel barrier strips, and device screws in the #10 range. If your block uses #6 or #8 screws, the slot will be oversized and the lug can shift under the screw head.
3) Is the Sta-Kon RB1253 rated for 600 volt control and power circuits?
Yes, the terminal carries a 600 V rating and is UL listed under file E9809. That makes it usable in standard 120/208/240/480 V control panels and motor control circuits within its wire range.
4) Why use a flanged fork terminal instead of a plain spade or a ring terminal?
A flanged fork has turned-up ends on the tongue, so the lug cannot slide out from under a screw head that has only been backed off, not removed. That is the reason panel builders and controls techs pick it over a plain spade. A ring terminal is more secure still, but the screw has to come all the way out to install or service it. On a barrier strip you expect to re-terminate, the flanged fork saves the work.
5) Can I use this fork terminal on aluminum wire?
No. The RB1253 barrel is copper, so it is for copper conductors only. Aluminum conductors need a terminal specifically listed AL/CU with the appropriate inhibitor compound; crimping aluminum into a copper-only lug creates a dissimilar-metal joint that will loosen and heat.
6) Do I need a special crimp tool for these insulated Sta-Kon terminals?
Use a crimper with insulated-terminal nests color-coded for the blue 18-14 range. An insulated barrel like this one needs a die that compresses the metal barrel through the nylon sleeve without splitting it, so an uninsulated or open-barrel die is the wrong tool. Strip to the barrel length, bottom the conductor out, then crimp.
7) Is nylon insulation worth it over vinyl on a fork terminal?
The RB1253 uses nylon insulation, which resists abrasion, cut-through and heat better than PVC and holds its shape when the lug is pulled through a tight wire bundle or a panel wireway. For MRO stock that gets installed in hot enclosures or pulled against sheet metal edges, nylon is the one to standardize on.
8) What part number do I order for the Sta-Kon blue No. 10 flanged fork, and where is it made?
Order Sta-Kon RB1253. It is manufactured in the United States. Specify by that number if you are matching existing terminations in a panel, since the blue 18-14 fork is made in both flanged and unflanged versions and they are not the same part.
How fast can I get the Sta-Kon RB1253 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 RB1253 come with a warranty?
Absolutely. The Sta-Kon RB1253 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 RB1253?
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installation tips, and troubleshooting. Contact Us
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