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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Subgroup:
- General Terminals
- Product Type:
- Non-Insulated Locking Fork Terminal
- Standards:
- UL E9809
- Voltage Rating:
- 600 V
- Wire Size:
- 12-10 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Metallic
- Product Material:
- Copper
Sta-Kon C221M – Frequently Asked Questions
1) What wire size does the Sta-Kon C221M locking fork terminal take?
The C221M is sized for 12-10 AWG conductors. Pick a different Sta-Kon terminal for 16-14 AWG or for anything larger than 10 AWG, since crimping outside the barrel's range gives you a connection that can pull out or overheat.
2) What stud or screw size does the Sta-Kon C221M fork terminal fit?
It's built for a No. 8 stud or screw. The fork slot slides in sideways under a partly backed-off screw, so you don't have to pull the screw out of the terminal block to land the wire.
3) Is the Sta-Kon C221M a UL listed terminal?
It's covered under UL file E9809. For MRO and institutional work where terminations have to be listed components, that's the reference to put on the submittal.
4) What's the difference between a locking fork terminal and a plain spade terminal?
Both are open-ended so they slip under a loosened screw, but the locking fork has turned-up tangs at the tips of the fork. Once the screw is torqued down, those tangs bite and resist the terminal backing out under vibration, which a plain spade will do on equipment that shakes. Use the plain spade only where the joint stays still; use a ring terminal where code or spec requires a closed connection.
5) Is the C221M terminal copper or aluminum, and can I put it on aluminum wire?
The barrel is copper, so it is intended for copper conductors. Aluminum feeders need a connector marked AL or AL9CU along with the proper inhibitor compound.
6) Do I need a special crimp tool for the Sta-Kon C221M?
It's a non-insulated barrel, so you crimp it with the non-insulated die nest of a ratcheting crimper set for 12-10 AWG, not the color-coded insulated nests. No tooling ships with the terminal.
7) Is the Sta-Kon C221M made in the USA?
Country of origin is the United States, which matters on government and institutional jobs carrying domestic-sourcing requirements. The terminal is a bare metallic finish.
How fast can I get the Sta-Kon C221M 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 C221M come with a warranty?
Absolutely. The Sta-Kon C221M 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 C221M?
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 C221M 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.