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Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID

Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID

Item # 44-5310A
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Fastenal Wire Connectors - 44-5310A
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Fastenal Wiring - 44-5310A

  • Wire Connectors
  • Ring Terminals
  • 3/16 Inch
  • 12-10 Gauge
  • Fastenal

Ring terminals are used for all types of electrical work where wires need fastening

  • For use with 12-10 gauge wire
  • Stud size: 3/16"
  • Vinyl insulation sleeve is yellow

44-5310A Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID

Video of Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for 3M Wiring 44-5310A Review

Today, we're going to review part number 44-5310A. This is the 3M ring terminal for 12 to 10 gauge sized wire with a ring inside diameter of 3/16ths of an inch. These ring terminals are used for all types of electrical work where wires need fastening. This one is for use with a 10 or 12 gauge sized wire. It does have the vinyl insulation sleeve, which is yellow, and then the ring terminal, the inside diameter is 3/16ths so it is designed to fit on a stud size of 3/16ths of an inch. Basically, want to show you here, I got an example right here of a 12 gauge sized wire. What you would basically do is just side this into ...

You don't really want to have it sticking out. You could, but what I like to do is put it right there. Then, you're going to crimp, have a set of . This is a wire stripper with, down here is the crimping portion. If you just stick that in the very .. Put it right over there and then all you have to do is push down just like that.

Once you push down and hard enough, you can see that it crimps that wire to this ring terminal. You can see that you have a good connection. That's the reason I don't like to have the wire stick out too much because you don't want any of that exposed so if you just keep it under that insulation sleeve, you should be in good shape. That should do it for the review on part number 44-5310A. This is the 3M ring terminal for 12 to 10 gauge sized wire with the 3/16ths inch ring inside diameter. .

Customer Satisfaction Score:

Customer Reviews

Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID - 44-5310A

Average Customer Rating:  4.8 out of 5 stars   (40 Customer Reviews)


Fast shipping and exactly what I needed to replace my OEM Trailer pigtail.


Quick service/delivery. Nothing really exceptional about these. Frankly, wish I had gotten some with heat shrink.


Replaced trailer wiring over a year ago and lights still work great. No issues with these connectors. Used them in new junction box.


Had this sent to the person I purchased my Used Lance 1030 from before picking it up. He said this was a Super High Quality Product! Nice and Color Coded Heavy duty terminals. His Electrician is removing the end of the Lance plug so I can just use the 7 bladed plug at the end of the bed of my truck next to my License plate (2017 F350 PSD, DRW Super Cab, 8 Foot bed)


connectors and breakers to hook up my brake controller arrived in order, installed easily, and lasted 1 year so far...


Exactly as described. Great to order from one supplier and have all the pieces arrive together for our project.


Worked well with everything downstream of the primary wiring. Just wasn't big enough for the primaries, got that at a local hardware store.


Everything was as advertised, and thank you Kaylyn R for your wonderful customer service. It took awhile to get everything installed, because of crazy events in the past year, but it all works great!


Everything arrived faster than I thought it would and everything looks great!!! I will be buying more when I need trailer parts in future. Things should go alright installing unless I screw it up.


Odelia waited on me and was very helpful as well as professional. I certainly would order from her again and recomend etrailer to anyone who needs trailer supplies.


Bought in conjunction with other items to rewire trailer.
Works as advertised.
Speedy delivery.


Good connector. Used it to terminate LED lighting and no problems in about a year so far.


Overall a good product. Easy to use and install.

The only minor issue we had was the plastic band coming loose after crimping the wire onto the connector.


What can I say, its a ring terminal.


Not a cheap connector




Worked great good quality


Worked as intended.


Great service and fast delivery! Awesome website and easy to find what I needed!


Great product!


Worked like it should


Have not installed yet, but I received exactly what I ordered


Fast shipping and great product


Received on time and as advertised. Great job!!

Show More Reviews

See what our Experts say about this Fastenal Wiring

  • New Side Marker trailer Lights are Very Dim
    It sounds like a bad ground connection. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. But can also appear when changing out lights. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should...
    view full answer...
  • How Many Ring Terminals Are Included with Fastenal # 44-5310A
    Yes, the listed price for the Fastenal # 44-5310A is for 1 ring terminal. This is designed for use with 12-10 gauge wire and features a 3/16 inch stud. I have attached a short video review that you can check out as well.
    view full answer...
  • What Size Ring Terminal Will Fit the Hidden Hitch Wiring Junction Box # 38656
    I pulled the Trailer Wiring Junction Box # 38656, and Ring Terminal # 44-5310A, from our warehouse. The correct ring terminal size that will fit is part # 44-5310A, which is a 3/16 ID terminal for 12-10 gauge wire. I produced a short video showing that the # 44-5310A ring terminal fits on the post of the Junction Box. Also linked is an FAQ on trailer wiring.
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  • Diameter of Terminals on Spectro Trailer Wiring Junction Box
    The Trailer Wiring Junction Box # 38656 referenced in your question features 3/16 inch outer diameter terminals that will work perfectly with ring terminals like # 44-5310A. This junction box will provide a fast and easy way to connect the wires from your trailer connector to the wiring for your 6-Way or 7-Way connector. I have attached a short installation video on this product that you can also use for reference.
    view full answer...
  • What Size Ring Terminals Should be Used with Buyers Products Junction Box # 3375601101
    The ring terminal size you need for the posts of the junction box part # 3375601101 that you referenced is 3/16 inch like the part # 44-5310A which would work great. The terminal matches the correct ring size and also is designed for 10 to 12 gauge wire.
    view full answer...
  • Wiring for Lights Using Junction Box # 38656
    If you take a look at the photos I've attached you can see how the wires from a 7-way connector can be run to junction box # 38656. You would also need ring terminals # 44-5310A. I've added a link to a video review, as well as an install of this junction box for you to take a look at.
    view full answer...
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  • Junction Box Terminal Post Size for Part # 3375601100
    The ring terminals you want to use with the junction # 3375601100 are the # 44-5310A which have an inner diameter of 3/16 of an inch.
    view full answer...
  • Troubleshooting Poor Trailer Brake Performance After Replacement of Brake Drums and Assemblies
    There are some things you can do. First, I'd make sure the brakes are properly adjusted. Even if the brakes are self-adjusting, you'll need to manually adjust them initially, or find a large parking lot and run through several braking cycles at 20 or so mph to adjust the brakes. Also, regardless of if you have manual adjust or self adjust, the brakes will need to be burnished in or broken in, if you will. If you click the provided link, you can take a look at a help article that explains...
    view full answer...
  • Recommended Junction Box for 7-Way Trailer Connector
    To purchase just the junction box you will want item # 38656. It is made by Spectro. This box is weather proof, but not water proof, and what that means is that it will keep water out under normal circumstances rain and puddles, but if it were to be submerged the box would not stay dry on the inside. I have linked an installation video below. You will also want the Ring Terminal item # 44-5310A to complete your installation.
    view full answer...
  • Parts Needed to Re-Wire Tandem Axle Gooseneck Trailer for 7-Way Type Operation
    We can help you re-wire your tandem axle gooseneck trailer to have a 7-way plug to match your tow vehicle. Have a look at the linked article on trailer wiring. Typically a white wire is used for ground. There are several ways a 7-way can be wired so you will want to ensure that each circuit on the vehicle socket is correctly matched to the appropriate circuit wiring on the trailer. Testing the trailer light functions with a spare 12V battery can make this identification easier. You can...
    view full answer...
  • Ring Terminal Recommendation for Use on Junction Box 277-000141
    The ring terminal size you want to use on the posts of the junction box part # 277-000141 is 3/16 inch like the part # 44-5310A which also fits 10-12 gauge wire.
    view full answer...
  • Junction Box To Wire Lighting on Flatbed Trailer
    Yes, the Pollak 10-Terminal Junction Box part # PK52248 will work to wire up the lights on your flat bed trailer. The posts on this particular junction box are not labeled so you can connect your functions to the box on any of the posts. Since you are just doing lights, you can just leave the rest of the posts unused without any issues. You will need ring terminals part # 44-5310A to connect your wiring to the terminals.
    view full answer...
  • How to Make Ground Connection When Mounting Kat's Heaters Defrost Fan to Wooden Surface
    The Kat's Heaters Defrost Fan # KH43100 that you referenced does indeed ground via its mounting screws. If you plan on mounting the fan to a wooden surface then you will just need to run a separate ground wire from the bolt using a ring terminal like # 44-5310A to a nearby metal surface or to the negative post on the battery you're using.
    view full answer...
  • Trailer Junction Box Installation on Trailer to Avoid Use of Wiring Adapters
    Sometimes trailer wiring adapters do cause odd behavior from vehicle lights, trailer lights or both. It is often better to do an actual re-wiring of the trailer to match the vehicle's connector so that adapter complications are avoided. Fewer connections are also generally more reliable. A 7-way junction box like # e99011 mounts to your trailer frame and it comes with a 7 way cord. Simply cut off the existing trailer 4-pole connector and apply ring terminals like # 44-5310A to the trailer's...
    view full answer...
  • Troubleshooting 7-Way Trailer Wiring with Colors That Don't Match Functions
    Wiring by function is the route to go for your situation. This is done by testing each wire of your trailer individually. The easiest way is to use a 12V battery and connect the negative terminal to the trailer's ground on the frame and then use the positive terminal with a jump wire to connect to each individual wire. One wire in your 7-way will be the ground wire. You will want to find this one first because it will cause a spark if you connect the battery to it. You can trace...
    view full answer...
    Image 1 for Image 2 for
  • Recommended 7-Way Wiring Harness For 2000 Sundowner Horse Trailer And 2013 GMC Sierra 3500 Dually
    For your application, I can absolutely give you the wiring function locations. I've attached a picture to assist. Based on what you mentioned, I think I have a better option for you. I recommend the Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long # 277-000141. This will allow you to connect your wiring at a junction box using the ring terminals like # 44-5310A, and then uses a molded plug so you won't have the disconnection issues as you plug and unplug your 2000 Sundowner...
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    Image 1 for
  • How Do I Ground the Yellow Wire to Pair/Sync My Remote with Air Lift WirelessONE Compressor
    Grounding an electrical wire, which is all this is, entails finding a paint and corrosion free spot on the frame of the vehicle that you can connect the wire to. You'll likely want to use a ring terminal like the # 44-5310A and a self tapping screw of some sort to complete the connection to the frame and allow for grounding the circuit. The steps for pairing the remote are listed below for you to use as a reference in the event that you want a quick place to refer back to. 1. Turn ignition...
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  • What Size Ring Terminals Needed For Epicord 277-000141 Trailer Plug With Junction Box
    For a tidy, professional installation, using a junction box like what's provided with # 277-000141 is without a doubt the way to go. You'll want to use 3/16 inch ring terminals like # 44-5310A. I've linked to an installation video you might find helpful.
    view full answer...
  • Where To Connect The Ground Wiring From The 4 Pole Connector # 18004 On My Trailer
    When installing The 4-Pole Trailer End Connector # 18004 the easiest way to attach the ground wire would be to attach the white wire to a clean, bare metal surface on the vehicle with a self tapping screw # 101131802, and adding a ring terimal # 44-5310A. A good ground location would be on the trailer frame or sheet metal that is not painted. I attached a review video link below.
    view full answer...
  • How to Re-Wire Trailer with 4-Pole Trailer Harness
    A 4-pole trailer wiring harness has three circuits plus a ground, the ground being carried on the white wire. You will just need to test the functions on each trailer wire to confirm how to connect them to a 4-pole pigtail like # HM38138. A junction box # 38656 and ring terminals like # 44-5310A will make it easier to get solid reliable connections. You will want to ground a battery negative terminal to the frame and apply 12V power from the positive terminal to each trailer circuit, one...
    view full answer...
  • How to Upgrade Trailer from 6-Way to 7-Way RV-Type Wiring for Lighting and 12V Power Functions
    The best way to match up your different vehicle and trailer wiring is to install a 7-way on the trailer. It is much easier to work on a trailer's wiring than a vehicle's. And doing this avoids adapters that can often end up being a pain in the long run. A standard RV-type 7-way trailer setup includes all the lighting signals for the trailer plus a brake circuit for the trailer's brakes, a reverse light circuit for trailers that have clear backup lights and a 12V trailer power circuit that...
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    Image 1 for
  • How to Upgrade 6-Way Trailer to 7-Way to Match Connector on 2014 Dodge Ram 1500 Pickup
    The best way to help your Ram pickup with a 7-way to get along with your 6-way-equipped trailer is to upgrade the trailer to a 7-way. This is a simple process of installing a 7-way plug like # H20046 with a junction box # 38656 and ring terminals # 44-5310A. All you need to do is apply 12V power to each trailer wire to confirm its function and then install each wire in the junction box at the appropriate terminal. Although adapters do exist, they can be tricky to use since a 6-way can...
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  • Troubleshooting 7-Way Trailer Wiring Where Brake Lights Come On as Running Lights on Trailer
    The running lights should come on as soon as the running lights on your vehicle come on. This should give you a light in your tail lights, but it shouldn't be as bright as a turn signal or a brake light. If you are getting the brake light, then your tail lights have been wired incorrectly and most likely have the brake/turn light wire switched with the running light wire. I recommend using a circuit tester like # PTW2993 to check the wiring functions at your 7-way and then check the...
    view full answer...
  • Installing 7-Way Junction Box to Avoid Use of Wiring Adapters
    Since your 7-way-equipped trailer's lights and brakes function when connected to the 7-way on your Highlander you ought to be able to detect those same signals on the vehicle's 7-way socket using a circuit tester like # 40376 when no trailer is connected. Those signals should be present either way. Make sure your tester is properly grounded when you test the circuits. Given the choice of using or not using any type of adapter, I always suggest avoiding them whenever possible. Extra connections...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Zack K
Video Edited:
Zack K
Employee Mike S
Updated by:
Mike S

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