Contact us
Close contact box

T-Spec Set Screw Ring Terminals

2-pack with 1 red and 1 black terminal (4-ga. 3/8" hole)

Item # 120RT804P

California customers:
Please click here for your Proposition 65 warning.

In Stock
$5.99

Other options

About the T-Spec Set Screw Ring Terminals

Make your connections tight

You'll get tight and secure connections for your amplifier's power and ground cables with a set of T-Spec's set screw ring terminals. You just insert the wire's stripped end and tighten the Allen head set screw for a long-lasting and worry-free electrical connection. This package includes two heavy-duty nickel-plated ring terminals; one marked black, the other red. Warranty: 1 year.

What's in the box:

  • Two flat-black set-screw ring terminals for 4 AWG wire
  • 2 Rubber insulators

Customer reviews

Loading reviews...

T-Spec Set Screw Ring Terminals Reviews

Average Customer Review(s):

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

More details on the T-Spec Set Screw Ring Terminals

Product Research

Features

Overview: This package includes a pair of T-Spec v10-series ring terminals for your power cables. The terminals have a flat black finish, and can accommodate 4 AWG wire. A rubber insulator is included with each ring terminal.

Set Screw: The terminals have a heavy duty set screws to securely hold the power cable in place. A 3mm Allen wrench is required to tighten or loosen the set screws.

Polarity: The ring terminals have a band around them to mark the polarity. One terminal has a red band and the other has a blue band.

Loading accessories...

Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Sturdy and no hassle with crimping etc [ William  Mar 07, 2019 ]
A
It fits the 4 gauge wire I want to use to install a power inverter in my vehicle. [ Ronald  Jan 25, 2019 ]
A
Easier to use than crimping [ Chad  Dec 16, 2018 ]
A
Better than wrapping wire around a terminal screw. [ Jerry  Oct 20, 2018 ]
A
Overall reviews were good [ David  Jul 31, 2018 ]
A
they look cool enough and they will prevent fraying at the ends of the wires going into my amp (hopefully, idk yet). [ Matthew  Jul 13, 2018 ]
A
Better connection [ ABEL  Jul 06, 2018 ]
A
Like the way they looked, the price and needed them for my system [ Dave  Jun 26, 2018 ]
A
Recommended by norm [ Charles  Jun 08, 2018 ]
A
Needed a better connection for power wire [ W  May 06, 2018 ]
A
Good quality terminals, will match the ones im already using from you guys [ Jordan  May 05, 2018 ]
A
I could crimp this critical connection with the tools I have but I felt this was a stronger, more secure termination than my crimping! [ Mark  Feb 28, 2018 ]
A
I've used these in the past and felt they are good quality and they give the job a clean look. [ Dennis  Feb 26, 2018 ]
A
Seems better than a crimp. [ Bruce  Feb 14, 2018 ]
A
recommendation [ ROBERT A  Feb 08, 2018 ]
A
they look cool [ Alan  Sep 26, 2017 ]
A
They make what I'm doing easier [ Stephen  Jul 15, 2017 ]
A
They are reusable! [ caleb young  Jun 29, 2017 ]
A
I bought it for a clear connection. [ ANTOINE L  Jun 26, 2017 ]
A
It was either pay for shipping or pay a bit less and get a pair of these with free shipping - sort of a no brainer. I'll wind up using them when I get around to the Big 3 upgrade. [ Barrett  Jun 03, 2017 ]
A
Looking for impovements in car audio wiring [ Gary  May 22, 2017 ]
A
Easy and fast connection [ Matthew  May 10, 2017 ]
A
good reviews from friends [ Damien  Oct 28, 2016 ]
A
do not like crimps [ wayne  Aug 27, 2016 ]
A
these make good battery connections for audio systems [ B  Aug 06, 2016 ]
A
Quality, easy to install wire and based on reviews for T Spec [ Tomasz  Jul 24, 2016 ]
A
Needed new terminals [ ALDO  Jun 05, 2016 ]
A
my power wire kept coming loose because the wire doesn't fit snug. This should fix that! [ Jeremiah  May 28, 2016 ]
A
Wanted to get better ground connection. [ DAVID  Apr 12, 2016 ]
A
Plugging bare wires straight to your amp can sometimes come loose and if you want to disconnect your cables you will need to cut and remake the cables again. In order to have a more secure connection and avoid having to remake the cables, I chose to use the screw ring terminals. [ RENEL  Apr 11, 2016 ]
A
to install right [ harold  Mar 23, 2016 ]
A
complete my amp install. [ thomas  Feb 07, 2016 ]
A
These terminals have a very clean and durable look. I am installing them on an off-road vehicle and need something that will hold up and not come loose due to vibration. [ DanenG  Jan 01, 2016 ]
A
I needed it for my 0 Gauge wires so that I can connect them to my 150 amp fuse. [ Corey  Feb 14, 2019 ]
A
To make a better and solid connection [ RAYMOND  Jan 16, 2019 ]
A
Just what I needed. [ Andrew  Jan 13, 2019 ]
A
Much easier to plug in wires to the amp with these terminals. No crimps needed [ Cody  Dec 29, 2018 ]
A
Its simple and easy to use [ jacqueline  Dec 09, 2018 ]
A
does not require crimping [ MARY  Nov 30, 2018 ]
A
EASY TO HOOK UP [ TYRONE  Nov 04, 2018 ]
A
wanted something more robust than crimp on terminals [ PHILIP  Oct 18, 2018 ]
A
Easy installation for big 3 [ Dany  Jul 21, 2018 ]
A
Like the way they looked and the price and needed them for my system [ Dave  Jun 26, 2018 ]
A
To make it easier to hook up my amp positive and negative wire's. [ Michelle  May 24, 2018 ]
A
Needed for connection of power and ground to amp. [ Richard  Apr 26, 2018 ]
A
Car amp hook up [ Catherine  Mar 07, 2018 ]
A
I purchased these because of the way they allow a secure connection, and well the way they are constructed. [ Shawn  Oct 08, 2017 ]
A
Very very good price!! [ Shacoby  Aug 02, 2017 ]
A
Needed one to connect 1/0 gauge power wire to distribution block. Will never mess with crimp on terminals ever again. [ Megan  Apr 20, 2017 ]
A
It is a genius idea! I change system configurations all the time. This will make for a clean and custom look without having to buy a crimper for this large of wire. [ Michael  Apr 15, 2017 ]
A
I love clean install and these work great [ Tyler  Oct 06, 2016 ]
A
Squeeze terminals wouldn't hold 1/0 wire. [ Dan  Sep 25, 2016 ]
A
I like the quality much better then standard crimp terminals. And I like the color. [ Randall  Sep 01, 2016 ]
A
these make good battery connections for audio systems [ B  Aug 06, 2016 ]
A
It's fastest connect [ AGUSTIN  May 30, 2016 ]
A
Plugging bare wires straight to your amp can sometimes come loose and if you want to disconnect your cables you will need to cut and remake the cables again. In order to have a more secure connection and avoid having to remake the cables, I chose to use the screw ring terminals. [ RENEL  Apr 11, 2016 ]
A
to install right [ harold  Mar 23, 2016 ]
A
These ring terminals look really cool and are super affordable. For heavy gauge wire, I prefer them to crimp or solder type ring terminals. You may have to modify your battery post, or purchase adaptors. I have the GM style side terminal batteries and just replace the pain-in-the-neck terminal bolts with 3/8" bolts with a jam nut and they work great. [ DanenG  Feb 04, 2016 ]
SHOW MORESHOW LESS

15 questions already asked

Q
Will these fit an Alpine MRP-500 amp for the ground + power wires, I have 4 gauge wire currently installed?
[ Kaiser  Oct 31, 2018 ]
1 answer
A
These should fit your 4 ga. wires and the terminals on the amp as well. I use these terminals for 4. ga wire and they fit the terminals on my Pioneer amp perfectly. Luckily, Crutchfield has amazing service and will likely refund you should they not fit.
[ pullpitch  Nov 05, 2018 ]
Q
Will these go in to a speaker output on a amp that has narrow screw down connectors? It's a kicker 1200.1 if that helps.
[ Rick  Mar 22, 2018 ]
1 answer
A
Connectors like these can work as long as the opening in the port on the amp is at least 0.638" wide or wider. But I should mention these may not hold the speaker wire as they are designed to work with wire as big as 4 gauge. We have connectors better suited for speaker wire gauges. I recommend contacting an advisor on 1-800-324-9695 for a personal recommendation My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=101
[ Paul  Apr 02, 2018 ]  Staff
Q
anybody know what size the set screw is? just want to make sure it's meaty enuf and not too small.
[ GARY  Jan 26, 2018 ]
1 answer
A
The set screw is plenty large. It is 5/16 (.312) in diameter.
[ Ogaz Enterprise  Jan 31, 2018 ]
Q
Do the barrels become electrified? My terminal posts are very close together. I worry the metal would easily touch the other connector and short out.
[ JesusAli  Apr 23, 2017 ]
2 answers
A
Yes the whole thing will be electfied
[ keane  Apr 25, 2017 ]
A
No, it doesnt touch each other plus it have a cover for the wire. I never have an issue with it.
[ Amaury  Apr 24, 2017 ]
Q
Will this fit 2 gauge wire?
[ Hank  Jul 09, 2016 ]
2 answers
A
Nope, 4 gauge is as big as will fit.
[ Michael  Jul 10, 2016 ]
A
Yes it will fit.... i have several sets and have had no problems. I would suggest to also buy metric allen wrench set to properly tighten.....
[ Troy  Jul 09, 2016 ]
Q
Are the terminal holes the right size to fit onto the car battery? Also, does it come with any plastic tubing (once it's connected to the wire) to seal over the connection?
[ Nick  Aug 20, 2014 ]
8 answers
A
The holes are only about 3/8". I used them to connect to a distribution block. I can't remember if it came with a plastic sleeve, I think it did
[ KEN  Aug 23, 2014 ]
A
Yes I have one on my terminal fits no problem
[ KERTTON  Aug 23, 2014 ]
A
Hi Nick, The holes do not fit on the actual battery terminal but they do fit the screws that tighten down the battery cables. That's where I put them.
[ MICHAEL  Aug 22, 2014 ]
A
Yes to both of your questions.
[ JAJA  Aug 22, 2014 ]
A
No plastic tubing . Terminal holes fit over standard 3/8" screw studs but NOT over the large smooth studs on a car battery.
[ THUY Q  Aug 22, 2014 ]
A
Yes they do.
[ Antwyan  Aug 22, 2014 ]
A
Yes they do.
[ Antwyan  Aug 22, 2014 ]
A
they will work with a gm adapter that screws into a side mount battery and they do have plastic covers i used these and works and looks nise
[ scott  Aug 22, 2014 ]
Q
Hi I have a Power Acoustik Caliber Class D 8000w Amplifier. Will this product fit my power and ground terminals?
[ Robert  Mar 16, 2019 ]
5 answers
A
I'm not really sure. SorryEnter
[ Jeffrey  Mar 22, 2019 ]
A
No, I bought these for the same use, they are massive, way to big to use as terminals for my amplifier
[ Jake  Mar 22, 2019 ]
A
Depends on if they're fitted for 0 gauge wire initially, considering 0 gauge is significantly larger than 10/12. When I purchased these I did have to modify their size to accommodate for the terminals, but overall they were easy to modify. It won't affect their output level, it's just a connection.
[ Eithian  Mar 22, 2019 ]
A
I doubt it. These are more for connections to the battery or a capacitor.
[ Donnie  Mar 22, 2019 ]
A
They are 3/4 inch wide. Check your amp terminal width because I am unsure. Hope that helps
[ MICHAEL  Mar 16, 2019 ]
Q
Are they 100% copper inside?
[ Jovan  Sep 26, 2018 ]
2 answers
A
They look to be copper on the inside, nickel plated on the outside, but it's not specified anywhere that I can find.
[ Gary A.  Oct 02, 2018 ]
A
Yes
[ Tony  Oct 02, 2018 ]
Q
Will this fit two #4s?
[ aaron  Jul 19, 2018 ]
2 answers
A
Technically yes, but I would recommend putting the two #4 into a splitter and coming out with #1/0 6 to 12 inches from the splitter and put the end on it!
[ BRIAN  Jul 19, 2018 ]
A
Yes
[ Brittanie  Jul 19, 2018 ]
Q
Will this also fit 0 gauge?
[ Nickkkk  Dec 16, 2017 ]
5 answers
A
Yes
[ Tony  Oct 02, 2018 ]
A
Yes it will
[ Gregory  Dec 17, 2017 ]
A
Yes but use the covers that comes with them and you might have to grind them a little
[ Nicholas  Dec 16, 2017 ]
A
Depends on the brand. Some have thicker wires than others. If the 0 guage wire is on the thicker side than it might not fit
[ David  Dec 16, 2017 ]
A
Yes
[ Shacoby  Dec 16, 2017 ]
Q
Will these fit 0 gauge too?
[ Nickkkk  Dec 16, 2017 ]
5 answers
A
Yes, no issues.
[ Tony  Dec 22, 2017 ]
A
Yes. Zero gauge fits just fine.
[ MICHAEL  Dec 19, 2017 ]
A
They will as 0 gauge is only slightly smaller than 1/0, but you will want to use something like a ferrule or some means of keeping the strands of your power cable together. I used on 1/0 and used a ferrule with these terminals to keep the end of the wire clean and no frayed strands.
[ Sheila  Dec 18, 2017 ]
A
I used 4 gauge and from the about this item it says 1/0 ga meaning yes it will fit 0 gauge
[ Drew  Dec 17, 2017 ]
A
Don't know, I got them hooked up to 2 gauge welding cable..
[ Juan  Dec 16, 2017 ]
Q
will this fit a 2/0 wire ?
[ jeffrey  Aug 23, 2017 ]
2 answers
A
Never hurts to try if no you could always return it
[ Drew  Dec 17, 2017 ]
A
No it won't, only 1/0 gauge.
[ JAROD  Aug 23, 2017 ]
Q
Do this item connect directly to a compacitor?
[ Kevin  Aug 06, 2014 ]
7 answers
A
Yes it does
[ WALTER  Aug 06, 2014 ]
A
Do you mean capacitor ?Yes it does!
[ mauro  Aug 06, 2014 ]
A
Should work but you would probably need to mount with the ring upside down so it will sit flush. Short answer, yes.
[ craig  Aug 06, 2014 ]
A
Yes
[ PATRICK  Aug 06, 2014 ]
A
To a compactor, I am not sure! If you want to connect to an amp, you will have to shave the brass down to fit! You should be fine, just if you do have to grind down the side it will shave fast so be careful!
[ JOSHUA RICHARD  Aug 06, 2014 ]
A
I used these terminals to connect to batteries & battery switches. I do not have any capacitors in my system, nor have I worked with capacitors for audio systems, so I am not familiar with there shapes. What I can tell you is that these terminals are quite large & well built. I was surprised to see how substantial these terminals are. So... 1) You must ensure that you have some space around your capacitor to use these. They are far bigger than normal crimp on terminals. 2) With normal crimp on terminals, one side is almost perfectly flat with the bottom of the terminal. Example... ------------- ||||||||||||||||| -------------------- With these terminals, neither side is "perfectly" flat because of the large round barrel. ONE side of these terminals is "flatter" than the other, but neither side will fit flush against the top of the battery, capacitor, whatever. Example... ------------- ------ ||||||||||||||||| -------------
[ JOSEPH R  Aug 06, 2014 ]
A
Yes
[ Derek  Aug 06, 2014 ]
SHOW MORESHOW LESS

Loading articles...

TOP