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Master Lock Brass Padlock - 1-1/2" Wide - Long Shackle

Master Lock Brass Padlock - 1-1/2" Wide - Long Shackle

Item # ML4140LH
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ML4140LH - Keyed Unique Master Lock Padlocks
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Great Prices for the best padlocks from Master Lock. Master Lock Brass Padlock - 1-1/2" Wide - Long Shackle part number ML4140LH can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (1)
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  • Videos (2)
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  • Why etrailer?

Master Lock Padlocks - ML4140LH

  • 1/4 Inch Diameter
  • Universal Application Padlock
  • Keyed Unique
  • Master Lock
  • Brass and Steel

  • Economy padlock with a wide brass body that resists elements
  • Hardened steel shackle adds cut resistance
  • Ideal for cabinets and fences
  • Non-rekeyable 4-pin tumbler cylinder provides pick resistance


4140LH Master Lock Brass Padlock - Series 4140

Video of Master Lock Brass Padlock - 1-1/2" Wide - Long Shackle

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

Video Transcript for Review of Master Lock Padlocks - Universal Application Padlock - ML4140LH

Today, we're going to take a look at the Master Lock V-Line Long Shackle Brass Padlock. Now this is a nice economy padlock, has a nice wide brass body that'll resist elements. If you notice it has the hardened steel long shackle for excellent cut resistance. So this is ideal for cabinets, fences, you can even use it on your RV in a lot of places. This uses a non-rekeyable four pin tumbler cylinder, provides pick resistance. Does come with the two keys.

Just insert the key, twist it, and it pops right open. And you can take the key out, and then lock it into place.A few measurements on this, which is critical on a lock. So you want to make sure it fits your application. Overall height on this very top of it, bottom to the top is three and nine-sixteenths of an inch. The body width, which is the bottom portion.

This is the body and this is your shackle. So the bottom width is going to be right at one and a half inches. The body thickness at the widest point, which is in the middle, is right at a half an inch. The clearance width, which is the measurement in the shackle here, the inside portion, the clearance width is going to be right at thirteen-sixteenth of an inch. And the clearance height, which is measured from the top of the body to the inside of the shackle, it's going to be right at two inches.

But that should do it for the review on the Master Lock V-Line Long Shackle Brass Padlock..

Customer Reviews

Master Lock Brass Padlock - 1-1/2" Wide - Long Shackle - ML4140LH

Average Customer Rating:  5.0 out of 5 stars   (1 Customer Reviews)


These locks are a great choice for a medium duty application. The long shank on these locks make them extremely useful. Good keys, not flimsy like many no name locks. I strongly recommend this product.


See what our Experts say about this Master Lock Padlocks

  • Can the Master Lock Brass Padlock Be Keyed Alike
    The Master Lock Brass Padlock part # ML4140LH does not have a keyed alike option, it's keyed unique. I have attached our list of keyed alike padlocks below.
    view full answer...
  • Recommended Lock for Use with Master Lock 10-mm Braided Steel Cable
    A padlock with a larger opening to accommodate the cables, like the Master Lock Padlock # ML4140LH will work to secure the 10-mm Braided Steel Cable # 72DPF. This lock is ideal for use with loop-end cables such as the # 72DPF.
    view full answer...
  • Is There a Way to Lock B and W Companion Hitch to OEM Ram Rail Kit
    The Master Lock Padlock # ML4140LH has a shackle that is 1/4" so they will work with the B&W Companion # BWRVK3600 in your OEM Ram rail kit. You will need to continue using the saddle pins while you are actually towing, however; the Master Lock padlocks can be used when you are not towing as a theft deterrent.
    view full answer...
  • How to Lock the B&W Companion to OEM Puck System on a 2020 Ram 3500
    It isn't a bad idea to add some security to your B&W Companion OEM 5th Wheel Hitch # BWRVK3600 while it's installed on your 2020 Ram 3500. You can actually use a lock in place of the pins that are used for securing the legs. The lock just has to have a 1/4" diameter shackle like the Master Lock # ML4140LH.
    view full answer...
  • How to Lock B&W 25K fifth Wheel Hitch using GM Puck System for 2021 Chevy Silverado 3500
    You can use a pad lock ran through the levers of the hitch instead of the snapper pin to lock the lever in the locked position. The lock that will work is the Master Lock Padlock # ML4140LH for a single lock. You'd only need to lock one of the feet to effectively lock the rack to the rail kit.
    view full answer...
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  • Does B&W Companion 5th Wheel Sliding Hitch for Ford Require Adapter Plates for Different Trailers?
    The B&W Companion OEM 5th Wheel Trailer Hitch w Slider for Ford Towing Prep Package - Dual Jaw - 20K # BWRVK3370 does not need an adapter plate for different trailers. Your Keystone Avalanche 5th wheel trailer will work just fine. The 1 inch thick dual jaws will provide excellent connection to your king pin for less undesired movement. You may want to secure the unit to your truck using a pad lock like # ML4140LH which is a great fit for the latching handles.
    view full answer...
  • How to Lock Reese Goose Box Fifth Wheel to Gooseneck Coupler
    We're glad you like your Goose Box! You can use a padlock to lock it with the part # ML4140LH which has a shackle dimension that matches what you'd need. I attached a picture that shows where the pad lock will fit through.
    view full answer...
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  • How Many Axles for use with Dexter Trailer Breakaway Kit?
    The Dexter Trailer Breakaway Kit # 34-285 is going to work on single or tandem axle trailers only. If you're looking for a breakaway kit that allows for triple or quad axles I recommend the Tekonsha Shur-Set III # 2028 ,which works for anywhere from 1-4 axles. It is a top loading system for easy access the 5 amp-hour battery from above and comes with a built in battery charger. The battery box is also equipped with the ability to add a padlock similar to # ML4140LH for extra security.
    view full answer...
  • Will Gen-Y Auto Latch Gooseneck Coupler Lock Work With Reese 18k Goosebox?
    I have a solution for you, but the Gen-Y Auto Latch Gooseneck Coupler Lock - 25,000 lbs # 325-GH-7111 does not look to be a fit for the Reese Goosebox 18k. The Gen-Y Lock requires a lip, which the Reese does not have. I recommend using Master Lock Brass Padlock - 1-1/2" Wide # ML4140LH to lock your coupler; see attached photo.
    view full answer...
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  • Complete Lock Kit For Trailer Hitch Receiver And Trailer Coupler
    I highly recommend going with Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches # 3794DAT. This is a great kit that comes with a 1-1/4" receiver lock, a 2" receiver lock, coupler lock to secure the trailer, and a coupler latch lock to disable the trailer's latch from being opened. This kit comes with a nice carrying case. In order to lock your ramps with padlocks, you can go with Master Lock Brass Padlock # ML4140LH or Master Lock Laminated Steel Padlock...
    view full answer...
  • Recommended Padlock for Reese Goose Box Adapter
    The specifications of the Master Lock Laminated Steel Padlock part # ML101 are inline with what is required to lock the coupler portion of a Reese Goose Box Adapter like part # RP85FR which you can see in the attached photo. That said, if you have tried to use this lock and found that it does not work due to being over-sized then I recommend the Master Lock Brass Padlock part # ML4140LH which also meets the specifications of the Reese Goose Box Adapter but is not as over-sized as the former.
    view full answer...
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  • Lock for the Curt Q25 5th Wheel Hitch for Chevy/GMC Towing Prep Package C16069
    The recommended lock to secure the Curt Q25 # C16069 is the # ML4140LH. This is steel and brass lock with a 1/4 inch shackle diameter that you would use in place of one of the pins that secure the handles in place while the hitch is installed. Another possible option is to use a cable lock such as # e98891. Weave it through the hitch and a tie down point in the truck bed.
    view full answer...
  • Availability of Locking 5th Wheel Pin Kit that is Keyed Alike
    I do have a solution for you, but unfortunately we do not have any kits available for locking up your 5th wheel setup. Instead what you can use is the Tow Ready Base Rail Lock # TR63254, along with the 5th Wheel Coupler Lock # e98896, and the Master Lock Padlock # ML4140LH. These don't have the ability to be keyed alike, but they will provide you with locks to the points that you mentioned.
    view full answer...
  • Will My Older B&W Companion Head Fit the BWRVB3305 Base
    Yes, the B&W Companion line of 5th Wheel Hitches all use the same head, which is part # BWRVC3006. So, if that is what you have then it will fit the Replacement Base for B&W Companion OEM 5th Wheel Trailer Hitch # BWRVB3305. I also confirmed that the Replacement Base # BWRVB3305 is confirmed to fit your 2017 Ford F-350 Super Duty (8 Foot Bed) with OEM Prep Package. For extra security, I recommend replacing the cam-action handle pin with a padlock like # ML4140LH. I have included a few...
    view full answer...
  • Locking Pins for B&W Companion Puck Latches And Coupler Pins
    For your Companion 5th wheel hitch # BWRVK3305 with a 3/8 inch hole, I recommend the Master Lock Python Adjustable Cable Lock - 6' Cable # 8419DPF. The cable lock can be run through the same locations on both sides and attaches to itself. A padlock is another option you have with the Master Lock Padlock # ML4140LH. Included are video resources for both solutions.
    view full answer...
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  • How to Lock Convert-A-Ball CAB-C5G Cushioned 5th-Wheel-to-Gooseneck Adapter
    The # CAB-C5G Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter can easily be locked by using a padlock like part # ML4140LH. . You'd pass the shackle of the lock through the locking handle slot and out the hole in the foot of the coupler. This prevents the coupler from being opened, so it can be used while the trailer is hitched or when it's not. Either way, the lock will help deter theft by making it difficult to unlock the coupler.
    view full answer...
  • Recommended Base Plate Locks For Roadmaster Tow Bar
    The Quick-Disconnect Padlocks for Roadmaster Tow Bars # RM-302 will work well in replacing your 1/4" pins to lock your Roadmaster tow bar with quick-disconnects to the base plates on your towed vehicle. In regard to the 1/2" pins that hold the tow bar to the crossbar, you could use etrailer Trailer Hitch Receiver Lock # e98879, which is 1/2" in diameter and has 2-1/8" usable length. I checked with Roadmaster and they said that it should be 1/4", not 1/2". If that is the case, then you can...
    view full answer...
  • Locking Key Safe for Ram Truck Key and Locks for Curt Q25 5th Wheel Hitch
    The Master Lock mini key safe, part # 5408D, is pretty small and the part the lock connects to in the safe blocks a decent size key from getting in. I'm not exactly sure what your 2016 Ram 3500's key looks like but I'm fairly certain it's a key fob like in the picture I attached. If so it won't fit in the safe. Instead take a look at the Master Lock Safe Space storage box, part # ML5900D. It's quite a bit larger so pretty uch any car key should fit and it still uses a combination to...
    view full answer...
    Image 1 for
  • Padlock for Locking Feet of B and W Companion Hitch to Ram Factory Rail Kit
    The only way we can recommend you lock the B and W Companion hitch # BWRVK3600 to the factory rail kit of your 2016 Dodge Ram 3500 will be with a pad lock like the # ML4140LH as there isn't any other way to lock the feet. Most thieves are going to be deterred by the sheer weight of the fifth wheel hitch which will make a quick getaway nearly impossible and also the presence of a padlock. A determined thief with enough time and the correct tools typically can get what they want, but with...
    view full answer...
  • Lock and Cover Recommendation for Mopar 30k 5th Wheel Hitch by Curt
    Your Mopar 30K 5th Wheel Hitch is manufactured by Curt and modeled after the Curt Q Series 5th Wheel Hitch Line. They have the same lockable handle, specifically designed so that you can add a padlock to help prevent theft and give you that peace of mind you're looking for. The Master Lock Padlock # ML4140LH is the one I recommend for your Mopar Hitch. For a cover, we have the Classic Accessories Cover for 5th Wheel Trailer Hitch # CA80116 that is going to fit really well and protect your...
    view full answer...
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  • Is There an Option for Locking the Lock N Roll Couplers?
    With the design of the Lock N Roll Articulating Channel Tongue Trailer Coupler # 336TS506 being pretty new and different, there are currently no locks that will secure it. However, this does not mean we do not have a way to keep your trailer from disappearing in the night. The Trailer Wheel Lock # 288-02020 is adjustable and will fit 6-3/4" to 10-1/2" wide tires. This also has soft-coated arms that won't scratch your rims once installed. Is will be my suggestion as it will...
    view full answer...
  • Solutions for Locking Truck Bed Camper When Not on Truck
    There isn't a specific product available that is designed to secure your truck bed camper when it's not on the truck, but I do have a few solutions that will work well. I first recommend looking into some standard cable locks like our # e98891. You can run a few of these through the tie-down loops on the camper and secure them to some anchor points. You might also use some chain and padlocks like the Master Lock # ML4140LH. One other item you might be interested in to set your mind at...
    view full answer...
  • Cover and Lock Needed for 2014 Ram 3500 OEM Puck System and Curt Q25 5th Wheel Hitch
    To cover the Curt Q25 # C16049 installed on your 2014 Ram 3500 I recommend the Classic Accessories Cover # CA80116. There isn't a custom cover for the Q25 but this is a great option that has had a lot of success with many 5th wheel hitches including the B&W Companion which is a bit bulkier than your Q25. The cover for the center hole for the OEM puck system on your Ram is part # C66145. It has an inner diameter of 2-1/4" and an outside diameter of 3-1/4" which matches up with what comes...
    view full answer...
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  • Comparing 2019 Chevy 3500 OEM Compatible 5th Wheel Hitch for Biggest Trailer
    The difference you asked about you already stated. The B&W Companion OEM 5th Wheel Hitch for Chevy/GMC Towing Prep Package - Dual Jaw - 25,000 lbs # BWRVK3705 is rated for 5,000 lbs more than the other hitch. It will be a stronger option with less limitations due to that. The lock that will work with the hitch to secure it is the Master Lock Padlock # ML4140LH for a single lock or, if you want to lock both sides of the Companion, you can use the Master Lock keyed alike # ML312KA. The...
    view full answer...

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Info for this part was:

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Edited by:
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Employee Jeff D
Installed by:
Jeff D
Employee Clayton O
Installed by:
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Employee Jacob T
Video Edited:
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Employee Erin H
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