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  1. Trailer Tongue Lock
  2. Trimax Locks
  3. Fits 1-7/8 Inch Ball
  4. Fits 2 Inch Ball
  5. Fits 2-5/16 Inch Ball
  6. Keyed Unique
Trimax Universal Trailer Coupler Lock for 1-7/8", 2", and 2-5/16" Couplers
Trimax Locks

Trimax Universal Trailer Coupler Lock for 1-7/8", 2", and 2-5/16" Couplers

Part Number: TMX47FR
In Stock
$78.03
Trailer Tongue Lock
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Dual-ratchet locking system and ballistic nylon housing with a hardened steel shackle provide 360 degrees of protection for your trailer coupler. Heavy-duty housing can take a beating, giving you peace of mind when you leave your trailer unattended. Great Prices for the best trailer tongue lock from Trimax Locks. Trimax Universal Trailer Coupler Lock for 1-7/8", 2", and 2-5/16" Couplers part number TMX47FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (116)
  • Q & A (0)
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Trimax Locks Trailer Tongue Lock - TMX47FR

  • Fits 1-7/8 Inch Ball
  • Fits 2 Inch Ball
  • Fits 2-5/16 Inch Ball
  • Keyed Unique
  • Surround Lock
  • Trimax Locks
  • Steel
  • Universal Application Lock

Dual-ratchet locking system and ballistic nylon housing with a hardened steel shackle provide 360 degrees of protection for your trailer coupler. Heavy-duty housing can take a beating, giving you peace of mind when you leave your trailer unattended.


Features:

  • Locks down your trailer coupler to prevent towaway theft
    • Keeps others from hooking up to your trailer
    • Fits most ball-style couplers
  • Creates a tight, secure fit around ball for 360 degrees of protection
    • Built-in ball fits inside coupler, engaging it like a trailer ball does to block the opening
    • Dual-ratchet system allows shackle to clamp around coupler evenly and guards against tampering
  • Constructed of super-durable, ballistic nylon
    • Lock body won't rust and it can absorb hammer blows
  • Provides better security than locks with standard keys
    • Cylinder is harder to pick and resists drilling
    • Tube keys are more challenging to duplicate
  • Includes 2 keys
    • Keyhole cover keeps moisture and debris out of lock cylinder


Specs:

  • Application: 1-7/8", 2", and 2-5/16" ball couplers
  • Maximum coupler width: 4-1/2"
  • Shackle diameter: 9/16"
  • Limited lifetime warranty


Coupler width

Trailer Security Lock

You can lock your trailer coupler with a padlock, but it might not provide enough security to keep your trailer safe. A padlock can only be used to lock the coupler latch on your coupler, and to fit through the latch, the shackle on it has to be pretty thin. That means the shackle on a padlock is typically easy to cut.


The shackle on this wraparound lock is considerably thicker than a standard padlock shackle, making it harder to cut through. Also, because the shackle on this lock wraps around the head of your coupler instead of just fitting through the tiny latch, it just plain looks more secure.


The built-in ball on this lock engages in your coupler's ball socket, completely blocking the opening to prevent any tampering. The shackle fits over your coupler and ratchets down tightly and evenly. Because it ratchets on both sides, even if someone manages to slice through the shackle, it won't be enough to remove the lock. A (patient) thief would have to cut the thick shackle in multiple places to work it off of your coupler.


Simple Installation

To install this lock on your trailer:


Installing trailer coupler lock

First, remove the shackle and insert the ball plug into your coupler's ball socket.


Installing trailer coupler lock

Then, position the shackle over your coupler and line it up with the holes in the lock body. Push the shackle down, ratcheting it until it's snug around the coupler.



UMAX100 Trimax Locks Premium Universal Ballistic Grade Nylon Housing Unattended Trailer Lock - Fits All Couplers




California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.6

115 reviews
Dual-ratchet locking system and ballistic nylon housing with a hardened steel shackle provide 360 degrees of protection for your trailer coupler. Heavy-duty housing can take a beating, giving you peace of mind when you leave your trailer unattended.

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See what our Experts say about this Trimax Locks Trailer Tongue Lock

  • Coupler Lock for 2003 Wells Cargo Trailer
    Hey Jason! The easiest option would be to use the Trimax Trailer Coupler Latch or Door Lock # TMX26SR. You will run this lock through the hole in the trigger latch to keep it secure. You can also use a lock like the Trimax Universal Trailer Coupler Lock # TMX47FR which will fit that 2-5/16" coupler. If you want to look around for others you can search for trigger latch locks or 2-5/16" coupler locks and you will see some other styles/options. What do you plan to hall with your Wells Cargo...
    view full answer...
  • Latch Lock With Span Longer Than 3-1/2"
    Hi Zac; the only latch lock we carry with that diameter and a longer span than the # TMX38SR is the Bulldog Easy Access Coupler Lock # BD580409. I'm not sure what you meant by slightly, but this is just slightly longer with a span of 3-5/8". Is this for a coupler or some other application? If you need something longer, and you're trying to secure a coupler, you probably need to look at a different lock style like the Trimax Universal Trailer Coupler Lock # TMX47FR.
    view full answer...
  • Availability Of Locking Coupler Pin With 5/16" Diameter
    Hello Davis. The 1/4" pins are the standard for most coupler locks, and unfortunately, we do not offer anything with a 5/16" diameter. A 1/4" pin such as part # e98886, can still be used, but there may be a bit more play than you would like. Another good option for theft deterrent is a universal coupler lock like the Trimax Universal Trailer Coupler Lock # TMX47FR. This will work with the 2" ball and will fit a wide variety of coupler styles up to 4-1/2" wide overall.
    view full answer...
  • Can you get the Trimax Coupler Lock Keyed Alike? What Coupler Lock can be Keyed Alike?
    Hello Steven, I do have a keyed alike option for you, but I am sorry I cannot add the keyed alike option to the Trimax. I checked on the Trimax website and did not see the UMAX100-KA on there, I only saw the UMAX100. Are you sure it was on the Trimax website? We do have the Fastway Universal Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # FA86-0015-320, this specific part number will all be keyed to 320. Once again, my apologies that I cannot get that specific lock keyed alike. Are...
    view full answer...
  • Coupler Lock for a Tie Down Engineering TDE 7000 coupler
    Hey, Carl. There isn't one specific lock that would be for that coupler. I tried to find some sort of picture of even a drawing of the coupler to see what style would be best for it but I couldn't find anything out there. What I do know about that coupler is that it takes a 2" ball. You can get a universal type of lock like the Trimax part # TMX47FR. I personally would go with the InfiniteRule Trailer Coupler Lock Kit part # IR57RR. Main reason is the kit comes with multiple locks that...
    view full answer...
  • How to Get Spare Key for Trimax Trailer Coupler Lock
    Hey Steve! You'll need to pick up replacement keys from Trimax directly. Here is a link to their website - https://trimaxlocks.com/shop/keys/receiver-coupler-replacement-key/ Did you lose your keys, or are you just wanting to pick up some extra just in case?
    view full answer...
  • Recommended Lock For A Demco 2-5/16" EZ Latch Coupler
    You certainly can use the Trimax Coupler lock # TMX47FR with the Demco 2-5/16" Ez latch coupler like the # DM14040-81. The Demco coupler is 2-7/8" wide on the outside so it will undoubtedly fit with the Trimax lock, which is more or less universal. That being said, if you need a lock for the Demco EZ latch, I recommend the InfiniteRule Lock # IR66FR which is made specifically for the 2-5/16" Demco EZ Latch couplers so it will be a perfect fit.
    view full answer...
  • Maximum Trailer Coupler Width For the Trimax Dual Purpose Coupler Locks
    The 1/2" Trimax Dual Purpose Coupler Lock # TMX77FR measures 4" across to the U-Shaped locking pin. We also have the 9/16" Trimax Dual Purpose Coupler Lock # TMX67FR and Trimax Dual Purpose Coupler Lock with Ballistic Grade Nylon Housing # TMX47FR that are both 4-1/2" across.
    view full answer...
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  • Recommended Keyed Alike Coupler Lock
    I have a solution that is keyed alike and will save you some money but the Trimax Dual Purpose Coupler Lock and U-Lock with Ballistic Grade Nylon Housing - 9/16" Shackle item # TMX47FR isn't able to be keyed alike. Instead, you will want the Fastway Universal Trailer Coupler Lock item # FA86-0015-316. This also fits 1-7/8", 2", and 2-5/16" couplers. When you purchase Multiple coupler locks they are all keyed alike. We have multiple different item numbers that each have the same key number....
    view full answer...
  • Trailer Coupler Storage Lock Keyed Alike For 1-7/8", 2", and 2-5/16" Couplers
    I do have a recommendation as the Trimax Dual Purpose Coupler Lock # TMX47FR we do not offer for keyed alike. We do have the similar Fastway Universal Coupler Lock # FA86-0015-308 which will all be keyed the same.
    view full answer...
  • Surround Coupler Lock For 1-7/8, 2 and 2-5/16 Couplers That Can be Keyed Alike
    We have surround coupler locks for 1-7/8", 2" and 2-5/16" couplers that can be ordered keyed alike, but the Trimax Dual Purpose Coupler Lock # TMX47FR cannot be. For one that can be keyed alike you'd need the Master Lock 1-7/8", 2", and 2-5/16" Trailer Coupler Lock # ML377KA. On the product page of the # ML377KA there will be a drop down that you can select a keyed alike option.
    view full answer...
  • Does Trimax Trailer Coupler Lock Work on A-Frame Coupler
    Yes, the Trimax Universal Trailer Coupler Lock for 1-7/8", 2", and 2-5/16" Couplers # TMX47FR does indeed work on an A-Frame coupler.
    view full answer...
  • Recommendation for a Coupler Lock for a Collar-Loc Trailer Coupler
    For a Collar-Lok coupler I recommend a lock designed for then such as # BLTL-23 (2-5/16 inch ball), # BLTL-20-40D (1-7/8 to 2-5/16 inch balls), or # BLTL-22 (2 inch ball).
    view full answer...
  • Can Just The Ball Portion Of A Trimax Coupler Lock Be Replaced
    Hi Robert, The ball portion of a Trimax coupler lock isn't currently an available replacement part so you'd need to either reach out to Trimax directly or completely replace the lock with another like part # TMX67FR or # TMX47FR.
    view full answer...

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