Master Lock Stainless Steel Padlock with Shielded Shackle - 3/8" Diameter Shackle
(74 reviews)
Price: $26.01
Master Lock Stainless Steel Padlock with Shielded Shackle - 3/8" Diameter Shackle
Item # ML40D
Our Price: $26.01
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- Reviews (74)
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- Videos (1)
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- Why etrailer?
Master Lock Padlocks - ML40D
- Universal Application Padlock
- 3/8 Inch Diameter
- Master Lock
- Keyed Unique
- Stainless Steel
Features:
- Shielded padlock protects shackle and your gear
- Hardened steel shackle for extra protection
- 4-Pin lock cylinder is pick resistant
- Key can not be removed unless the padlock is locked
- Stainless steel body resists corrosion
Specs:
- Overall width: 2-3/4"
- Shackle diameter: 3/8"
- Shackle length: 3/4"
- Opening with shackle closed: 5/8" tall x 3/4" wide
40D - Kit Master Lock Stainless Steel Padlock with Shielded Shackle - 3/8" Diameter Shackle
Video of Master Lock Stainless Steel Padlock with Shielded Shackle - 3/8" Diameter Shackle
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Master Lock Stainless Steel Shielded Shackle Padlock Review
Everybody, welcome to eatrailer.com. I'm Bobby, and today we're taking a look at the Master Lock stainless steel padlock with shielded shackle. Now this is gonna be an excellent way, guys, of going ahead, securing maybe a latch on this kind of trailer, as you guys can see. Now one thing that's great about it, it does have this shielded shackle. And now that may make it a little harder to get on some accessories, but as you guys can see, it's really easy just to go ahead, turn that key, and there we are, nice and locked in. One thing that is a little unique about it, you actually can't remove the key unless it's locked.
So you are gonna know that it's nice and secure when you remove that key. Now, the shielded shackle here is gonna give you a little bit more protection, as you can't actually find a place to actually get any cutters to start messing with our shackle. Now, the stainless steel construction on this is gonna be excellent to go ahead and make sure we can leave it out here in the weather with no troubles, which is excellent. As, of course, is too with the tumbler being nice and recessed in there. I don't think we're gonna have any issues with anything kind of debris building up on there, which is excellent.
Now the one thing I will say, though, because we have that shielded shackle, we are gonna be a little limited on our spacing. We only have about three quarters of an inch spacing here between us to actually get this on any of our latches. Well, you can kind of compare that to some other padlocks out there, which are more closer to an inch. So speaking of that small diameter we we're talking about, you guys can see we have just a little cable out here that has two hoops and need to be connected by a padlock. Gonna be a little harder for me to actually get this to work here, so I'm gonna have to try to hold it and then flip it.
Now it is working, right, and you can see that was a little bit more difficult. Now compared to similar more traditional padlocks, those guys just have an easier time 'cause they are a little bit lighter. Now the one thing I think this one will really struggle with too, is if you have a lot of points of entry, like this trailer. So, gonna be hard to get all of these keyed alike, and at that point, you're messing with three new keys on your key chain. I might suggest taking a look at some other padlocks here etrailer.com with some key alike options.
One that comes to mind is the Bauer Products padlock. That's gonna give you a lot of great key alike options. But, if you do have only single-access stores, this is still gonna be great. Overall, guys, I think this is gonna be excellent for a lot of your flip down latches or a toolbox, something that only has one entry point, or if you have a single access point on your trailer that can be great. But overall I still think it's gonna do a great job. I really like how hefty the stainless steel is on here. I know it's gonna be lasting me for the years to come, which is great, and honestly I don't think anybody's gonna mess with this. I'd take one look and I'd go, "No thank you." So I think that about does it for our look here at the Master Lock stainless steel padlock with shielded shackle, here at your etrailer.com. I'm Bobby. Thank you for watching..
Customer Reviews
Master Lock Stainless Steel Padlock with Shielded Shackle - 3/8" Diameter Shackle - ML40D
Average Customer Rating: 4.6 out of 5 stars (74 Customer Reviews)
- ML40D
Sue - 02/20/2019
by: Sue02/20/2018
As per selection offered by etrailer.com of three discus Master padlocks with 3/8" shanks keyed alike, we are very pleased with the quality of the product received, as well as the fact that no hardware stores in the Reno/Sparks NV area carried a three pack of these types of locks keyed alike. This makes for very simple ease of use in our situation as well as having the security of discus locks in our application. Also, no hassles or issues in ordering these locks on line. Delivery info on web site was straight forward, accurate and timely. Will considering using etrailer.com again in the future.
Comments
Fine. Thanks for your concern! Good product!
Sue - 02/20/2019
- ML40D
by: Marie05/15/2021
This lock worked great to secure my trailer hitch anti-theft device. I would definitely recommend it.
- ML40D
by: Joan04/29/2021
Great lock for my gooseneck. Quick and easy to order!
- ML40D
by: Davet07/12/2017
Clumsy and sticky to lock and unlock. I ended up putting a dry lubricant in the lock to get it to function smoothly. I am conerned that under adverse weather conditions the lock may not work smoothly. etrailer was terrific, arrived quickly, no issues, all locks properly keyed. I still use etrailer and it has been an excellent resource for trailer issues.
- ML40D
by: Robert C12/16/2020
Excellent trailer coupler lock! Rounded design makes attachment quick, easy and tamper resistant.
- ML40D
by: John W05/04/2020
REally like these locks which I have now used for a year. I cannot see how anyone ( normal demented crook) could break this lock. My trailer is super safe with this lock securing the coupler. Highly recommend.
- ML40D
JustinV - 12/14/2017
by: JustinV12/14/2016
Got exactly what I paid for. Nice masterlock disk locks all keyed alike. Thanks a bunch!
Comments
Great. I purchased 13 of these using in a laundromat and havent had issues with any of them. Still very happy with the purchase.
JustinV - 12/14/2017
- ML40D
by: Dave H.01/14/2014
The Locks worked very well on the doors but are to large for the tongue.I wish they nade one to fit it.
- ML40D
by: D J in Oklahoma08/30/2020
We travel to several states for horse shows. We purchased this padlock to use with our E Z 5th Wheel Lock. These items sure provide an added sense of security.
- ML40D
by: Clay B.06/26/2017
etrailer was able to help me buy 5 keyed alike locks. My experience is that etrailer's customer service is great and they're competitively priced across their entire product offering!
- ML40D
by: Michael B01/02/2019
Fit my enclosed car trailer rear door perfect and matching keys a plus for sure :)
- ML40D
by: PaulC02/19/2017
Secures the coupler locks and the spare tires on all of our trailers...make sure to remember to check the keyed the same box...so no matter what truck or tractor key ring you happen to have on you, you'll have that same trailer lock key...:)
- ML40D
by: Excellent09/02/2019
This trailer tongue lock is easy to use and it is just grand that the same key works on the tongue lock and ball latch!! I have been buying all of my trailering accessories from these folks for years and I will continue to do so since they have a great products, are knowledgeable, and provide great customer service! D. Link
- ML40D
by: Kathleen D.10/10/2013
I recently purchased this lock for my etrailer trailer hitch lock and they both are so very easy to secure and it gives me peace of mind knowing that these items are very safe and VERY easy to use!! I would strongly recommend these items for anyone who wants to know that his/her horse trailer is not going to be stolen! Thanks etrailer, Kathleen D.
- ML40D
by: John K Tenn.09/10/2015
tire and lock was what I needed to finish up my paint trailer to put it in service. E-Trailer is a outstanding company to deal with price was great and customer service was outstanding A+++++ on getting shipping problem handled. Thanks again E-Trailer for a great product will use you again for sure
- ML40D
by: Paul G.02/03/2014
This is a great design - very difficult to attack w/bolt cutters - and etrailer.com was able to ship me 5 of them keyed alike to cover my entire trailer. One thing I would like to see - a simple sleeve, made of the soft silicone such as cell phone skins, in the shape of this lock. That would help keep the elements out and prevent metal-to-metal contact against the trailer.
- ML40D
by: Clay H02/05/2015
What a great combination! The Baylock EZ lock is much better than what was available at local shops. With the Masterlock, which fits perfectly, I feel that my trailer is as secure as can be; thieves are inventive! Would highly recommend this setup.
- ML40D
by: D. Robinson01/10/2014
Fits very well, and makes me feel much better about leaving my trailer parked. We have had many trailers stolen from farms in this area, so it was imperative to get a sturdy locking system. Thanks for your product and fast service.
- ML40D
by: JP06/07/2019
I had my multiple locks keyed the same and it works as described.
- ML40D
Christopher W - 06/11/2018
by: Christopher W.06/09/2017
Works like a lock should.
Comments
I Love the hitch. The lock didnt work with the pin diameter of the B&W Companion Gooseneck-to-5th-Wheel Trailer Hitch Adapter Item BWRVK3500, so went a different route.
Christopher W - 06/11/2018
- ML40D
by: Dennis Mortimer04/25/2014
Ordered 3 locks keyed alike. Very prompt shipping and the price was right. Smooth working mechanism and fit the trailer perfect. Kind of disappointed that they were made in china, but what isn't these days. Very satisfied with product and etrailer.com.
- ML40D
by: Tim07/31/2018
I will be towing an enclosed trailer loaded with some rather valuable items on board. These locks fit the trailer hasp's perfectly I am totally confident in their ability to keep my goods on board and safe! Thank You etrailer again!
- ML40D
by: Paul04/02/2014
Arrived on time. Coupler lock made well and lock is good also. A friendn of mine has a trailer coupler lock, easy to use and locks the trailer up good.
- ML40D
by: Maddie06/24/2015
We ordered 2 of these locks to replace locks already used in our fleet. Specificially we needed them keyed to match our other locks as identical keys are already used by over 50 people within our company. The customer service team was great, assuring they would cross check their inventory for locks coded to the right key or specifically order them in for us. They had them in stock and sent them to us right away, and everyone's pre-existing keys work in them perfectly. THANKS FOR YOUR HELP!
- ML40D
by: Brian D08/26/2014
Products as described. Ordered on Monday and they arrived on Wednesday! Ordered two sets of wheel locks and they were "keyed" the same without even having to ask! Excellent responsiveness and follow-up.
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Ask the Experts about this Master Lock Padlocks
- Would MasterLock Padlock Part # ML40D fit in a Hasp with a 7/16 inch DiameterThe Master Lock Stainless Steel Padlock # ML40D that you referenced has a shackle that is 3/8 inches in diameter. It would fit in a hasp that is 7/16 inches in diameter. It would be tight, but the shackle is small enough in diameter that it would fit.
view full answer... - Can Puck Lock Be Used with Blaylock EZ Lock Trailer Coupler Lock # BLTL-33The Blaylock EZ Lock Trailer Coupler Lock # BLTL-33 is designed to work perfectly with a standard padlock, but I think the typical opening size on the back of a puck lock will be a bit too small to fit over the end of its pin/shank. The pin/shank on this lock has a 3/4" diameter, while for example the opening on the Master Lock Puck Lock # ML6271 we have available has a height of just 19/32", which wouldn't allow it to mount over the pin. Your best option is going to be with something...
view full answer... - TL 33 and TL 45 Blaylock Trailer Coupler LocksI believe what you're looking for is the Blaylock EZ Lock Trailer Coupler Lock for 1-7/8", 2", and 2-5/16" Couplers # BLTL-33-40D. This has the TL 33 and then what I could find on the TL 45 is that it's the same part as the circular padlock on this coupler lock. This has an aluminum construction so it will hold up really well to the elements and it fits a wide variety of couplers on the market. Attached is a sample installation video for you to check out.
view full answer... - Can the MasterLock Hidden Padlock Be Ordered Keyed AlikeI may have a solution for you, but the Master Lock Hidden Padlock part # ML6271 cannot be ordered keyed alike. However, we do have some heavy duty padlocks with a 3/8" shackle that can be keyed alike that can provide a comparable solution. I recommend looking at the Master Lock Laminated Steel Padlock- 1-15/16" Wide - 3/8" Shackle # ML312KA, which is also a durable padlock option, but doesn't have the hidden design for the added layer of theft protection. This is available to keyed alike...
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view full answer... - Inner Dimensions of the Blaylock EZ Lock Coupler Lock # BLTL-33I pulled the Blaylock EZ Lock Coupler Lock, # BLTL-33, from our warehouse and took some measurements for you. The inside width of this coupler lock is 4-3/4 inches. From the base to the bottom of the pin, it measures 3-1/8 inches (see photo). If you do not have a padlock yet, I recommend looking at the Blaylock EZ Lock Coupler Lock with Padlock, # BLTL-33-40D. This is the same coupler lock, but it includes a stainless steel padlock. You could also just purchase the lock separately as...
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view full answer... - Recommended Trailer Coupler Locks for Wide Coupler SecurityFor your Atwood Channel Tongue Trailer Coupler 80060, I recommend the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # DT25013KA or Master Lock Heavy-Duty Coupler and Latch Lock Combo for 1-7/8", 2", 2-5/16" Couplers # 3784DAT are both good options. The latter doesn't have any restrictions of the width of the coupler.
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- Will the Replacement Handle Latch for Cam-Door Lock Part 158-102 Work With a Puck Style PadlockYes, the Replacement Handle Latch for Cam-Door Lock part # 158-102 will work with a puck style lock like the Master Lock Stainless Steel Padlock part # ML40D so long as the shackle does not exceed 1/2" diameter. I have attached a photo of this for you.
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view full answer... - Master Lock Padlock to Work With Blaylock EZ Lock Trailer CouplerThe Master Lock 970DPF will not work with the Blaylock EZ Lock Trailer Coupler # BLTL-33; instead you would want to use the Master Lock Padlock # ML40D.
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view full answer... - Replacement Lock Assembly for a Sears X-Cargo Sport 20 SV BoxThe replacement lock assembly for your Sears X-Cargo Sport 20 SV Box is no longer available. The only option I can think of to secure the cargo box is a universal option like part # ML702D with part # ML40D.
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view full answer... - Will the Master Lock Hidden Shackle Padlock fit a Blaylock EZ Lock Trailer Coupler Lock # BLTL-33Yes the Master Lock Stainless Steel Padlock # ML40D is compatible with the Blaylock EZ Lock Trailer Coupler Lock # BLTL-33. I attached a picture that shows both of these products used together.
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- Max Shackle Diameter for Locking the Blaylock EZ Lock Trailer Coupler Lock # BLTL-33That is correct. If you check out the attached picture of the Master Lock Stainless Steel Padlock # ML40D (3/8" shackle) installed on the Blaylock EZ Lock Trailer Coupler Lock # BLTL-33 you can see that there is no extra space for a larger size shackle.
view full answer... - Blaylock EZ Trailer Coupler Lock Compatibility with Fulton CouplerThe Blaylock EZ Lock Trailer Coupler Lock for 1-7/8", 2", and 2-5/16" Couplers - Aluminum # BLTL-33 is a great option for Fulton Couplers. It will fit your Fulton model 44125C well. It is designed to use the Master Lock Stainless Steel Padlock with Shielded Shackle - 3/8" Diameter Shackle # ML40D.
view full answer... - Maximum Padlock Shackle Diameter to Fit Blaylock EZ Lock Coupler Lock BLTL-33The Blaylock EZ Lock Trailer Coupler Lock # BLTL-33 can be used with a padlock shank that is no thicker than 3/8 of an inch so your padlock with a 14 mm (0.55 inches) shank is too big to fit through the hole on the pin. We do have the Master Lock Stainless Steel Padlock # ML40D which has that 3/8 of an inch diameter shank and is a very popular option to pair up with the BLTL-33.
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view full answer... - Material Components of the EZ Lock Trailer Coupler LockTHe lock body of the EZ Lock Trailer Coupler Lock, part # BLTL-20 is made from aircraft grade aluminum. To actually lock the coupler lock, you'll need to purchase a 3/4 inch diameter locking padlock like part # ML40D.
view full answer... - Available Types of Trailer Coupler LocksWe do offer coupler locks that allow you to secure an unhitched trailer. These can be seen on the linked page. These locks include types like the EZ Lock Trailer Coupler Lock # BLTL-20 which works along with a pad lock that you supply, such as # ML40D. We do not offer any lock products intended to secure a hitch ball to a ball mount. Usually hitch balls will be torqued (according to the manufacturer's instructions) to a degree that would make it hard to unscrew the nut that holds the...
view full answer... - Padlock Compatible with Blaylock EZ Lock Gooseneck Coupler LockThere is a padlock that is compatible with the Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-50, but if you were referring to the Master Lock Shrouded Padlock # 37DAT, it will not fit because the Coupler Lock has a 3/8 inch diameter hole for the padlock to fit and the Shrouded Padlock fits openings of 1/2 inch diameter or larger. The padlock which is compatible with the Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-50 is the Master Lock Stainless Steel Padlock with Shielded Shackle...
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