Price: $19.88

Trailer Coupler Lock - Deadbolt Style 7/8" Span

Item # RC6

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Our Price: $19.88

Keyed Alike?:


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Product Images

deadbolt trailer locks  latch lock coupler - style 7/8 inch span
deadbolt trailer locks coupler lock - style 7/8 inch span
deadbolt trailer locks
deadbolt trailer locks  rc6
deadbolt trailer locks coupler lock - style 7/8 inch span
deadbolt trailer locks  rc6
deadbolt trailer locks coupler lock rc6

In Use/Installed

trailer locks deadbolt coupler lock - style 7/8 inch span
trailer locks deadbolt coupler lock in use
trailer locks deadbolt coupler lock - style 7/8 inch span
trailer locks deadbolt coupler lock rc6

Customer Photos

deadbolt trailer locks coupler lock rc6
deadbolt trailer locks coupler lock rc6


  • Coupler Lock
  • Standard Coupler Lock
  • DeadBolt
  • Keyed Alike
  • Latch Lock
  • 7/8 Inch Span
Lowest Prices for the best trailer locks from DeadBolt. Trailer Coupler Lock - Deadbolt Style 7/8" Span part number RC6 can be ordered online at or call 800-298-8924 for expert service.

DeadBolt Trailer Locks - RC6

Coupler lock for tab style couplers

  • Pin Diameter: 1/4"
  • Dead Bolt Receiver Style with Flush Locking Design
  • Covered Key Slot Prevents Corrosion
  • Silver Colored Key
  • Helps Prevent Coupler Release From Ball
  • Helps Prevent Attaching Unattended Trailer To Ball
  • Multiple Locks are Available Keyed Alike
    • Simply select the keyed alike option from the drop down menu above and enter the number of locks needed into the quantity box.

Trailer Coupler with Lock
Alternate View of Trailer Coupler with Lock
Alternate View of Trailer Coupler with Lock

Economy - This item

Trailer Coupler Lock - Deadbolt Style 7/8" Span

Trailer Coupler Lock - Deadbolt Style 7/8" Span
DeadBolt Trailer Locks

16 reviews

Code: RC6

Our Price: $19.88

  • Trailer Locks
  • Coupler Lock
  • Keyed Alike
  • Standard Coupler Lock
  • Latch Lock
  • 7/8 Inch Span
  • DeadBolt
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  • Fits 1-7/8 Inch Ball
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Protect just about any trailer from theft with this universal coupler lock, which uses a unique "ball" and shackle to fit a variety of coupler sizes and styles. Secures trailer when it is not in tow. Order multiple locks keyed alike.

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Atwood AMPlock Trailer Coupler Latch Lock - Stainless Steel - 2 Keys - 3-5/8" x 1-5/8"

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  • Keyed Unique
  • Stainless Steel
  • 1 Inch Span
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Replacement parts available for this product

Video of Trailer Coupler Lock - Deadbolt Style 7/8" Span

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

Video Transcript for DeadBolt Locks RC6 Review

Today we're going to be reviewing part number RC6. This is the Deadbolt Trailer Coupler Lock. It's going to feature a flush locking design as well as a 1/4 inch pin diameter. Now this is a steel construction. On this end is going to feature a nice chrome plating that it's going to stand up really well against rust and corrosion. On this end it's going to be a steel construction but it's going to have that nice rubber coating over it.

That's going to be an all weathered grip. It's going to let you get a nice secure hold on the lock itself. Now this side over here has a textured surface that way you can get a nice grip on it also. The gripping is nice because it's going to allow you to get a nice secure hold even in extreme or harsh environments. Now in this end it's going to feature a nice covered key slot. This is just a dust cap that goes over the lock core.

It's going to help protect it from any type of rust or corrosion. Now a system like this is going to help prevent the coupler being able to release from your hitch ball. It's also going to help rpevent being able to attach to unattended trailer. one of the key features about this pin lock is it's going to feature a thief proof thread and lock design. A couple of different ways to get the lock core off, you can sit here and turn the keys counter clockwise or you can hold the key in place and just twist off the end with that rubber coating which is connected to the pin. It's going to come in two keys, again they are going to be key to like.

You can purchase multiple locks and you can get those key to like as well. All you have to do is select the key to like option from drop down menu on this products product page, enter the number of locks needed into the quantity box. Really simply process. A couple of measurements to go over with you really quick. I'll give you the overall length measuring from edge to edge it's going to give you a measurement of about 4 3/8 of an inch. The span that we have which is just the measurement of the amount of usable space here on our pin is going to measure 7/8 of an inch.

We are going to show you how this operates. I have a coupler here today that does not have any type of pin system on it, the latch can freely move. First I'm going to show you how by installing a coupler pin and lock system like this. It's going to help that latch for being able to open. As you can see here on our coupler, we can fully open up the latch. It's not protected in anyway. By installing this, we are going to take care of that issue. Now with our trailer coupler lock installed, you can only lift up the latch so far which is not allowing it to fully disengage. Again this is going to help prevent the coupler being able to release from the connected hitch ball. It's also going to help prevent being able to attach to an unattended trailer. That's going to do it for today's review of part number RC6. This is the Deadbolt Trailer Coupler Lock. .

Customer Reviews

Trailer Coupler Lock - Deadbolt Style 7/8" Span - RC6

Average Customer Rating:  4.9 out of 5 stars   (16 Customer Reviews)

- RC6

by: Mariano G.04/27/2014

This is a great product to have when you have two trailers and your Hitch receiver keyed alike. Etrailer made it happen with one easy call, thanks again! 127574


They are still working very well, thank you again!

Mariano G - 04/27/2015


- RC6

by: Charlie W.03/04/2017

What do you do when you need three trailers coupler locks and two trailer hitch receiver locks all keyed the same.......order them from Etrailer. Thanks for all your help Katie, awsome customer service!!! 352198

- RC6

by: Dave J.01/18/2017

Great product! I selected "keyed Alike" on many locks (~12) of this brand and they all came keyed the same. Makes it easy that we don't have to carry many keys for all our different trailers and trucks. One lock came that did not work with the others and a quick email to Etrailer and they shipped me out a replacement lock quickly for the defective one. I would order them again, Thanks 333429

- RC6

by: Larry11/20/2012

Just what I need to keep my trailer and spare tire in place, thanks. 59814

- RC6

by: Jeff Mc09/30/2014

WhEn I called in I was reminded that I could have this keyed alike with a hitch pin lock I had bought previously. Awesome customer service by Dana!!! 153716

- RC6

by: Jeff04/02/2013

Product is just as described. Seems to be a quality built product. Fits well with the angled surfaces were the flat ones have not fit in the past. 73880

- RC6

by: Lak12/29/2011

Item arrived in a timely manner and was well packaged. The trailer coupler lock works exactly as described and is highly recommended. 28839

- RC6

by: Perry W12/03/2016

Was just what I needed. All of these products are high quality. Would go here first to buy anything else pertaining to my truck. 322024

- RC6

by: Ron P.03/25/2014

Great service,E Trailer the only ones I have to go to when we need something here at the ranch for the trailers. Thanks 122037

- RC6

by: Chris R.06/13/2014

I bought a hitch lock and two coupling locks. They all arrived on time and keyed the same. Great service! 135529

- RC6

by: Gavin02/21/2013

Great products and super fast deliver. Highly recommended. 67150

- RC6

by: Devin P06/09/2016

Great lock with an interesting lock mechanism (threaded) 259303

- RC6

by: Gary T04/03/2014

Great Products and a great company to do business with 123667

- RC6

by: Paul E08/21/2014

Reasonably well designed product and good price. 147818

- RC6

by: Hugh02/26/2013

the perfect lock 67873

- RC6

by: Maximus03/06/2014

good product 119683


Ask the Experts about this DeadBolt Trailer Locks
Do you have a question about this Trailer Lock?

  • Recommendation to Prevent Trailer Theft by Using Safety Chains
  • It is possible to move a trailer by just attaching to it's safety cables. Most people would avoid the method you described as the trailer will slam into the back of the tow vehicle while stopping. Basically it wouldn't be a thief's ideal method for theft of a trailer but it would be an option. As a way to prevent that type of theft I would recommend a wheel lock like the part # RA-25. This will attach to your rim and will make it nearly impossible to move the trailer. Check out the review...
    view full answer...

  • Getting Keyed Alike Locksets for Hitch, Coupler and Cable Locks
  • Yes, you can get all of the locks you have mentioned keyed alike as long as you order from our Keyed Alike locks page. If you order all the locks you need at the same time they will come keyed alike. If you decide you need another lock keyed the same later you can call our customer service line at 1-800-298-8924 and request a lock, as long as it is on our Keyed Alike locks page, with the same key by giving them the key number you have. When you order please be sure to select keyed alike...
    view full answer...

  • Recommendation For Locks To Prevent Theft Of A Camper Trailer
  • If you are wanting to lock the trailer to your 2002 Isuzu Trooper and you have a 2 inch hitch receiver, I would recommend the DeadBolt Trailer Hitch Receiver And Coupler Lockset, part # 7685. This is a set of locks that will lock the ball mount to your tow vehicles 2 inch hitch and also lock the trailers coupler to the hitch ball. Both of the locks can be keyed alike, so only one key is needed for both locks. Locking your trailer at both connections will add time when somebody is trying...
    view full answer...

  • 3/8 Inch Diameter Locking Pin needed for a Triton Covered Snowmobile Trailer Lock
  • The DeadBolt Lock, item # RC6, has a shank diameter of 1/4 inch and span of 7/8 inches, if these dimensions will work for the cover latch on your snowmobile trailer cover, then the lock should work. You may want to consider the DeadBolt Lock Stainless Steel , item # RC6SS, for maximum weather protection and corrosion resistance, If these locks will not work for your latch we also have the Kuat Bike Rack Hitch Lock, item # KUATLOCK, which has a 3/8 inch diameter Pin and may work better...
    view full answer...

  • Latch Width and Hole Diameter for Trailer Coupler # CA5400
  • I went out to the warehouse and pulled trailer coupler # CA5400 to measure the latch width and its hole diameter. The latch outside width is just over 7/8 of an inch at 0.88 inches. And the hole diameter is just over 5/16 of an inch at 0.32 inches. If you end up needing a lock the DeadBolt lock # RC6 would be a good choice. It has a 7/8 inch span and a 1/4 inch diameter pin.
    view full answer...

  • Availability of Keyed Alike Coupler Locks
  • The Butterfly Style Trailer Coupler Lock, item # 3808, is not available at this time keyed alike. We have several keyed alike coupler locks that may work for you. Item # RC6 and # RC6SS, have a 7/8 inch span and item # 7690 and RC2ss have a 1/2 inch span for attachment to the trailers coupler.
    view full answer...

  • Comparison of the Deadbolt Coupler Lock and Master Lock Adjustable Coupler Lock
  • The main difference between the Deadbolt Coupler Lock, item # RC6, and the Master Lock Adjustable Trailer Coupler Lock - Stainless Steel, item # 2847DAT, is the style of the locks. The Masterlock has the advantage of being able to be used on many different styles of coupler and has a normal style key that can be duplicated at a local hardware store. The Deadbolt has a short span, 7/8 inches, so it can be flush to prevent removal. This style is more compact than the stick and block...
    view full answer...

  • Couple Lock Recommendation that Can be Keyed Alike
  • I have a solution for you, but the Bulldog Coupler Lock part # BD580410 that you referenced can not be keyed alike. For a similar lock that can be keyed alike you would want the DeadBolt Lock part # 7691. The usable span of this lock is 2 inches. For one with a 7/8 inch span you would want the # RC6. Or for 2-1/2 inches, part # 7692.
    view full answer...

  • Trailer Coupler Latch Lock with 1 Inch Pin Span
  • Master Lock has an adjustable latch lock, # 2847DAT that has presets for either a 1 inch span or a 2 inch span. We also have some that are 7/8 inch spans which is 1/8 of an inch more than a 3/4. We have # RC6SS, # 2878DAT, and # RC6. I have linked some video reviews of these locks for you.
    view full answer...

  • Channel Mount Trailer Coupler for 3 Inch Wide Channel
  • There is pretty much a standard for channel mount couplers such as # DM12113-95. The channel width is usually 3 inches and the couplers are usually around 2-7/8 inches wide to fit in the 3 inch wide channel. Once torqued down there is no side to side movement because the coupler essentially is clamped in. Holes are usually spaced 2 inches apart on center which is the vertical hole spacing in a channel this coupler would work with. But it never hurts to measure just to be sure. For mounting...
    view full answer...

  • Locks for A-Frame Trailer Coupler
  • We have all sort of trailer locks including coupler locks for a-frame trailer couplers. Please refer to the linked page that displays all standard coupler locks. You can use a universal-fit surround-type lock such as # ML389DAT which fits all ball sizes and that prevents someone from hitching to your trailer by clocking access to the coupler, or a simple latch type lock like # RC6 that prevents the coupler latch (like the one on # CA-5400-B) from being lifted to unlock the coupler.
    view full answer...

  • Replacement Keys for DeadBolt Trailer Coupler Locks
  • Yes, the keys from the DeadBolt Trailer Coupler Lock, # RC6, and other DeadBolt coupler locks can be replaced if they are lost, but I strongly recommend recording the key number that is stamped on the key. The key number is used for replacement keys, so I recommend writing the key number down and keeping it somewhere safe just in case you lose the keys. Replacement keys can be purchased using part # CTJKEY.
    view full answer...

  • Can Bolt Trailer Coupler Locks # RC6 and part # RH5-XL be Keyed Alike
  • Yes you can get the Trailer Coupler Lock part # RC6 and part # RH5-XL keyed alike if you wanted. You would just need to select the keyed alike option from the drop down menu by the add to cart button.
    view full answer...

Do you have a question about this Trailer Lock?

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