You may also like
NON INSUL TUB RNG TRM 4/0AN-250
Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Subgroup:
- General Terminals
- Product Type:
- Non-Insulated Ring Terminal
- Standards:
- UL E9809
- Voltage Rating:
- 600 V
- Wire Size:
- 4/0AN-250 kcmil
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Metallic
- Product Material:
- Copper
Sta-Kon M971 – Frequently Asked Questions
1) What wire size does the Sta-Kon M971 ring terminal accept?
The M971 is sized for 4/0 AWG through 250 kcmil conductors. It is a tubular barrel lug, so the stripped conductor seats fully into the barrel before crimping. If your feeder is smaller than 4/0, this is the wrong lug, going down a size or more in barrel is the only way to get a reliable crimp.
2) Is the Sta-Kon M971 lug rated for 600 volt service panel work?
Yes, the M971 carries a 600 V rating, which covers typical commercial feeder and panelboard terminations. It is also built to UL file E9809. Because the barrel and tongue are bare copper with no insulating sleeve, you supply the insulation, heat shrink or tape over the barrel where the installation calls for a covered termination.
3) Can I use the M971 ring terminal on aluminum conductors?
No. The M971 is a copper lug, so it is intended for copper conductors. Aluminum feeders need a lug listed AL9CU or aluminum-bodied, with the correct compound, otherwise you get a dissimilar-metal joint that degrades under load.
4) Is this a ring tongue lug or a spade, and does that matter for a bus bar stud?
It is a ring (closed) tongue. The ring has to pass over the stud, so the stud must be removed or the connection fully loosened to install it, unlike a spade that slides in from the side. The payoff is that a ring tongue cannot vibrate off a partially loosened stud, which is why it is the usual choice for panel, bus bar and battery stud terminations.
5) Does the Sta-Kon M971 come with insulation or do I need to cover it?
The M971 ships bare, as a metallic-finish copper lug with no sleeve or boot. For terminations inside an enclosure on a stud that is otherwise isolated that is normally fine, but where the barrel needs covering, plan on adding heat shrink tubing or an insulating boot separately.
6) Do I need a special crimp tool for a 4/0 to 250 kcmil tubular lug like this?
Yes. A barrel this size is beyond hand-pliers territory, it takes a hydraulic or large mechanical compression tool with the die matched to the conductor size. The M971 is a compression tubular barrel, not a set-screw mechanical lug, so there is no bolt-down alternative, if you do not have the crimper and die, a set-screw lug is the better choice for that job.
7) What is the exact part number to order this Sta-Kon lug by?
Order it as Sta-Kon M971. That is the manufacturer part number, and the barrel is the 4/0 AWG to 250 kcmil size. Country of origin is Mexico.
How fast can I get the Sta-Kon M971 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 M971 come with a warranty?
Absolutely. The Sta-Kon M971 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 M971?
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 M971 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.