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Master Lock Trailer Hitch Locks
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Master Lock Trailer Locks
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Master Lock Electronics


Master Lock


  • Dependable products for securing your valuables
  • Largest manufacturer of padlocks and security merchandise
  • Innovative security options for a wide range of uses
  • Decades of leadership in locks and security




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Expert Answers about Master Lock

  • Compatible Locking Hitch Pin to fit a 2012 Toyota Tundra with OEM Trailer Hitch
  • The hitch on your 2012 Toyota Tundra uses a hitch pin the will work with the 2-1/2 inch receiver. Even though your receiver opening is 2 inches the pin will compensate for the extra width in the design of the Toyota OEM hitch. The Master Lock Stainless Steel Trailer Hitch Lock, # 1469DAT, will work in the OEM hitch. However, this pin cannot be keyed to use your Toyota's ignition key. The BOLT Trailer Hitch Receiver Lock for 2 and 2-1/2 Inch Hitches, # BL7023584, can use your Toyota's...
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  • Recommendation for a Coupler Lock for a Collar-Loc Trailer Coupler
  • Master Lock coupler lock # 3784DAT is not the best option for a Collar-Lok 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).
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  • Multiple Trailer Coupler Locks That Can Be Keyed Alike
  • I do have a trailer coupler lock that can be keyed alike but the Master Lock Trailer Coupler Lock part # ML389DAT cannot. Instead you will want to use the Fastway Universal Trailer Coupler Lock part # DT25013KA which can be keyed alike and will work on 1-7/8", 2" and 2-5/16" trailer couplers. This is currently the most cost effective trailer coupler lock we have that can be keyed to match one another. I have attached a review video of the Fastway coupler lock for you as well.
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  • Best Coupler Lock Options for a 2015 Ranger Trail Boat Trailer
  • We have a few different universal options that I recommend choosing from. The Master Lock Trailer Coupler Lock # ML389DAT is a great option because it has a bright red color to draw attention to the fact that there is a lock on the trailer. Since the idea behind a lock is to deter theft, drawing attention to the lock will help to intimidate a would-be trailer thief. One of the most popular options is the Fastway Trailer Coupler Lock # DT25013KA. You can order this lock keyed alike...
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  • How to Permanently Install the Master Lock Electric Trailer Winch Part # 2953AT
  • The Master Lock Electric Trailer Winch part # 2953AT comes with a 20' long power cable with alligator clamps on one end and a quick disconnect on the other end. In order to permanently mount this winch I recommend removing the alligator clamps and wiring them directly to the battery with ring terminals. You can route the wires under the vehicle for a clean look and extend them if necessary. If you need to create a quick disconnect point between the vehicle/trailer then you can use part...
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  • Recommended Spare Tire Lock for 2018 Trailstar Trailer with Integrated Spare Tire Mount Location
  • It does appear to have a mount under the trailer for your spare. It looks like you just need to use some bolts and then use a lock like the Spare Tire Carrier Lock # 262DAT to secure it. Many times when there is not a mount, you would use the Fulton Economy Spare Tire Carrier with Wheel Nut Lock # FETCSTL0701 which can work, but is intended to go around a frame so would have extra length on your application.
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  • Coupler Lock for Trigger Latch Coupler that has 3/4 inch Span
  • We have the MasterLock Trigger Style Coupler Lock part # 605DAT which has a span of 3/4 inches like you said you need that would work well. You are correct and the tighter the latch opening is to the trigger latch of the coupler the harder it would be for a thief to get in there and cut the shackle.
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  • Will the Master Lock Coupler Lock # ML389DAT Fit a 4" Wide Trailer Coupler
  • We do have some options for you but the Master Lock Trailer Coupler Lock # ML389DAT that you referenced has a max coupler width of 3-1/4" so your coupler will be a little too big for it. For a coupler lock that can accommodate a 4" wide coupler we have the following: Tow Ready Gorilla Guard - # 63227 Fastway Universal Coupler Lock - # DT25013KA Master Lock Coupler Lock - # 377DAT DeadBolt BLOCKHEAD - # TCL3-YL Out of those options I recommend going with the BLOCKHEAD. It has...
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  • Trailer Coupler Lock for 2019 Jayco Jay Flight 28BHBE
  • Looks like you have a standard underslung thumb latch coupler like the part # CA-5335-B. The Master Lock coupler lock part # 377DAT would fit this and work well.
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  • Hitch Pin Locks and Cable Needed from Master Lock
  • The only Trailer Hitch Receiver Lock from Master Lock that we have that you can get keyed alike is the part # 1480DAT. For the cable you can use the Replacement Cable # S2005. The cable will fit hitch pin locks for both 1-1/4 inch shanks and 2 inch shanks.
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  • Compatibility of Keyed Alike Extended Length Locking Hitch Pin and Trailer Coupler Locks
  • The Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches # 3794DAT are keyed alike, but adding the extended length locking pins will not allow the keyed alike to also include those pins. For the 3-5/8 inch usable length, I recommend the InfiniteRule Security Trailer Hitch Lock - 3" Hitch - 3-5/8" Span # 34065033 which can be keyed alike with other pins from this manufacturer when you select the keyed alike option on each product page. For the coupler...
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  • Coupler Lock for Borrowed Trailer with Surge Brakes
  • Due to the unique style of coupler that you send in a picture of the hitch lock that would work the best is the Fastway coupler lock part # DT25013KA since this is a very universal style of lock that fits most couplers out there.
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  • Recommended Trailer Coupler Latch Lock Keyed Alike
  • I reached out to my contact at Master Lock, and the 7/8" Wide Trailer Coupler Latch Lock # 2878DAT are keyed at random and do not have the ability to be keyed alike. For a similar option you can use the DeadBolt # RC6SS which can be keyed alike. Alternatively, you may be interested in the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # DT25013KA which can also be keyed alike and add even more security. I've attached a video review to assist.
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  • Availability of Keyed-Alike Hitch and Coupler Lock Sets
  • We offer keyed-alike lock sets like the DeadBolt # 7685 that include both a 1/4-inch diameter trigger-style coupler latch lock and a 5/8-inch diameter hitch lock (for 2-inch hitches). This kit can be ordered keyed-alike in whatever quantity you require. Master Lock kit # 1481DAT is not offered keyed alike. Simply select Keyed Alike from the drop down menu tool and indicate your quantity of 4 in the field provided.
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  • Manual and Powered Tailgate Locks for 1993 Ford F-150
  • We offer several tailgate locks for your 1993 Ford F-150 that are shown on the linked page. These different locks are made for either a steel handle or a plastic handle tailgate. For example, for a steel handle you can use Pop & Lock manual lock # PAL2300 or for a plastic handle part # PAL2310. For a powered lock you can use # PAL8200 on both plastic and steel handles. Master Lock Tailgate Lock # 8253DAT does fit some F-150s but not your model year.
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  • Recommended Coupler Lock for UFP A-60 Surge Coupler
  • For a UFP A-60 hydraulic actuator/coupler I suggest Fastway coupler lock # DT25013 or Master Lock # 377DAT but the style of lock # ML389DAT will not work with your coupler.
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  • ShockStrap Recommendation for Tie Down to Be Used with Wider Handlebars
  • What you'd want is the ShockStrap Soft Ties for Motorcycles and Dirt Bikes # 297-2STB-2 as this will allow you to loop around the handlebars and the clip will be able to close. Typically if the bike is secured proplerly the spring clips really aren't needed. Most tie-downs for motorcycles/bikes don't have them and they simply get depressed when using on a wider bar without issue.
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  • What Material is the Trailer Coupler Latch Lock # 2878DAT Made From
  • The 7/8" Wide Trailer Coupler Latch Lock # 2878DAT is made of hardened steel. As far as how easy it is to defeat, ultimately any lock can be defeated given enough time and the right tools. Since there is no gauge of how "breakeable" a specific lock is, we recommend making your setup look intimidating to deter would-be thieves. If you are wanting to deter theft of your trailer when it is coupled then the Bulldog # BD580404 is a great option because it has a coupler lock and a ball...
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  • A-Frame Coupler Lock for Wide Latch
  • There is a solution for you, though the Master Lock Hitch Receiver and Coupler Latch Lock Set # 1481DAT will fit coupler latches that are 2". Instead, I recommend the Bulldog Easy Access Coupler Lock # BD580409 which has a 1/4" pin diameter and spans 3-5/8". I've added links to video reviews of this coupler lock for you to take a look at.
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  • Dimensions Of Master Lock Trailer Coupler Latch Lock
  • I pulled one of the Master Lock Wide trailer Coupler Latch Locks, part # 2878DAT from our warehouse to measure for you. As the enclosed photo shows the inside dimension from the barrel to the lock arm measures 7/8 inches and the depth of the lock is 1-1/4 inches. I have attached a link to a product review video for this lock you can check out.
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  • Recommended Wire to Extend Length of Power Cable on Master Lock Electric Trailer Winch
  • The Master Lock Electric Trailer Winch - 2,000 lbs # 2953AT comes with power cables that are 20 feet long and does not have other lengths available. If you wanted to extend that length 5-10 feet, you would need to use 12 gauge wire like # 12-2-1 sold by the foot and heat shrink butt connectors like # DW05745-5.
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  • Coupler Lock That Fits 1-7/8" Shelby Coupler
  • There is a coupler lock available for your 1-7/8" Shelby coupler, though they locks themselves aren't truly "universal;" oftentimes they say they will fit "most" but will name specific brands and types they fit. For example, the Master Lock Universal Trailer Coupler Lock # 379DAT will fit a 1-7/8" straight lip, rolled lip and surge brake/hydraulic couplers from Shelby, but also from Reese, Fulton, Valley, Atwood, Shelby, Putnam, Bulldog, Dutton-Lainson and UFP. There is also the Blaylock...
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  • What Material are Hitch Pins Made of?
  • A 5/8" diameter hitch pin is usually made of steel, though some have coatings applied to help resist corrosion. For example, the Master Lock Pivot Lock Hitch Pin for 2" Hitches # ML1465DAT is made of stainless steel, but there is also a version - the Master Lock Pivot Lock Hitch Pin for 2" Hitches # ML1495DAT - which is a chrome-plated steel hitch pin with a chrome-plated aluminum barrel. Another example would be the MaxxTow Hitch Pin and Clip for 2" Hitches # MT70053 which is made...
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  • Recommendation For A Gooseneck Trailer Lock
  • The MasterLock High Security King Pin Lock, Item # ML387, is not compatible with your Big Tex Gooseneck Trailer. The MasterLock is for fifth wheel trailers and will not work with gooseneck trailers. We do have some gooseneck locks like the the Blaylock EZ Lock Gooseneck Coupler Lock, Item # BLTL-50-40D, that will work if you have a Bulldog, Stallion, Superior, or T.E.M. coupler. If this will not work for you, let me know which coupler you have and I will look for other options.
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  • Locking Hitch Pin Rated for at Least 14,000 Pounds for a 2015 Ford Super Duty
  • Locking hitch pin # RH5-XL is designed for 2-1/2 inch hitches and is made using 15,000 pound stress proof steel. This sounds like the best option based on your needs. I have included a link to a video review of this locking pin for you to the right.
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  • Cable Diameter of Master Lock Gun Locks 99KADSPT and 107KADSPT
  • We do indicate the cable diameter of Master Lock Cable Gun Lock # 99KADSPT as being 2mm, which I agree does sound rather small. So I went to our warehouse and measured this item with a digital caliper to get a confirmed cable diameter. The exterior diameter of the cable is 5mm. This includes the vinyl wrap on the cable. I also measured the similar Master Lock Armored cable lock # 107KADSPT and found the cable as well as the metal clasp on the end of the cable to measure right at 5mm....
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  • Coupler Lock Recommendation for Bulldog Collar Lok Coupler
  • The Bulldog couplers are Collar Lok style which we have solutions for, but the MasterLock part # 377DAT is not the one you need. Instead the Fastway part # DT25013KA would be what you need.
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  • Can Multiple Master Lock Trailer Hitch Receiver Locks # 1480DAT be Keyed Alike
  • You can get multiple locks of part # 1480DAT keyed alike. What you will need to do is locate the box next to the picture that says keyed alike or keyed unique. Change it to read keyed alike. Below that select how many you want in the quantity box and that number of locks will be keyed alike and sent out.
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  • Availability of Keyed-Alike Trailer Coupler Locks
  • For keyed-alike coupler lock sets like the Master Lock Adjustable Trailer Coupler Lock # 2847DAT you'll need to use a lock from DeadBolt. Their locks can be ordered keyed alike but the Master lock you referenced cannot. The linked page will display all DeadBolt brand coupler latch locks that can be keyed alike. You can choose from several lengths such as the 7/8-inch span stainless-steel lock # RC6SS up to the 3-3/8-inch span lock # 28012. Just use the drop-down menu tool to select the...
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  • Hitch Receiver and Coupler Trigger Lock Compatible with Toyota Factory Receiver Width
  • The 2018 Toyota Tundra factory hitch is built up around the pin so it is wider than usual and will not fit the traditional 2 inch hitch pin like found in # 2848DAT. You will simply need the longer hitch pin. The Trailer Hitch Receiver Lock - Extra Long - Flush Design for 2-1/2" Trailer Hitches # RH5-XL will work well for you and give you adequate space. If you want one that codes to your truck key, you can use the Bolt Lock # BL7023584. If you want the coupler lock as well then you...
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