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The M40EURDNUM is a rugged, stainless steel disc padlock featuring a resettable 4-digit combination with 10,000 possible codes. Its boron-carbide shackle is 50% harder than hardened steel and fully shrouded to resist bolt cutters. Designed for both indoor and outdoor use, it offers superior weather resistance with a covered keyway and reinforced bumper. Ideal for securing storage units, sheds, trailers, and more, it comes with a limited lifetime warranty for lasting protection.









| ASIN | B00HUWZRS6 |
| Best Sellers Rank | 2,376 in DIY & Tools ( See Top 100 in DIY & Tools ) 17 in Combination Padlocks |
| Brand | Master Lock |
| Colour | Silver/Black |
| Control Method | App |
| Country of Origin | China |
| Customer Reviews | 4.0 out of 5 stars 4,686 Reviews |
| Finish | Zinc |
| Global Trade Identification Number | 00798256159008 |
| Included Components | 1 padlock |
| Item Dimensions | 9.3 x 7 x 3 centimetres |
| Item Type Name | MASTER LOCK High Security Disc Padlock [Combination] [Stainless Steel] [Outdoor] M40EURDNUM - Best Used for Storage Units, Sheds, Garages, Trailers and More |
| Item Weight | 0.31 Kilograms |
| Item dimensions L x W x H | 9.3 x 7 x 3 centimetres |
| Lock Type | Combination Lock |
| Lock type | Combination Lock |
| Manufacturer | Master Lock |
| Manufacturer Warranty Description | Limited lifetime warranty against mechanical failure. |
| Material | Stainless Steel |
| Model Name | Excell Disc padlock |
| Model Number | M40EURDNUM |
| Number of Pieces | 1 |
| Part Number | M40EURDNUM |
| Recommended Uses For Product | Garages, Gate, Outdoor, Shed, Toolbox |
| Recommended uses for product | Garages, Gate, Outdoor, Shed, Toolbox |
| Special Features | Anti-Drill, Cut Resistant, Passcode Unlock, Resettable, Weather Resistant |
| Special feature | Anti-Drill, Cut Resistant, Passcode Unlock, Resettable, Weather Resistant |
| Style | Disc Padlock |
| Unit Count | 1.0 count |
B**E
Great Product
Well constructed and very Strong and very well made
D**E
Combo lock
A good heavy duty lock. To change the code with the special key is easy, however after changing the code the lock was stiff to open, I thought it was jammed, a bit of persuasion, checking the lines are correctly lined up it came apart, (much to my relief). I've since applied some oil to the internals and moved the spindle in and out to free it up.
N**E
Not so good
Found this hard to get on with it uses a little flimsy key to change your code so if you loose the key you cannot change code,lots of places to let water in ,strong lock but not for me
N**E
Easy to set the new combination, very secure design.
These are the best value padlocks I have found. They're so solid, I bought them for the garden sheds to replace the key ones since multiple people in the house use them. Being able to set the combination is a handy feature, I could set them to something all the users can remember. I think you would need a grinder or something to hack off that lock because the design is too secure for an opportunist. It's only been in use for a few months now and there is no sign of rust or weathering, I'll update the review if that changes, but so far it's weatherproof.
D**N
Gives locks a bad name
Master lock review As soon as I opened the package I felt it was a gimmick. It might deter criminal people with its appearance and appeal to those wanting a strong practical lock, but itโs probably the worst lock ever built for the user. Iโve designed and manufactured security devices so appreciate many aspects of security, therefore my opinion comes from experience. Firstly if a lock is awkward to use then youโll either not use it or itโll not work properly. Accessing the combination barrels to set the code is with great difficulty. Wet fingers canโt get a firm grip because of the recess and tight tolerances; even after removing the plastic trim. The barrels are extremely difficult to turn and accurately align. The mechanism is simply poor quality, shoddy and clunky. The casing invites access and is badly finished. The code setting key is like the lock casing, badly pressed metal and fiddly to insert properly. What happens when you canโt find the key; more junk? Other combination locks use built in mechanismโs which canโt be lost. I canโt comment on the strengths of the lock because I wonโt use it; as a lock. From a distance it might deter some although others might want to test their skills; most combination locks are easy to open with practice. For what it cost itโs a time wasting device which should only be used on low value items. The longer a lock takes to bypass the better itโs security. Out of professional courtesy I wonโt grade this lock There are plenty of combination locks for similar money that are vastly better quality, stronger and easier to use, I recommend you choose them.
1**8
Does not work out of the box
I returned this lock immediately. The combination needs a tool to change it, and the tool would not turn so I could not change the combination. Also the supplied combination was a bit finicky about opening the lock. It seemed extremely likely that this lock would give me grief in the future, and I therefore returned it.
M**S
Sturdy padlock
I was so pleased with this padlock I purchased another 2 so I have 3 now also recommended to my brother who has also bought one
A**R
good
great
E**A
Not for outdoor use
Absolute trash, numbers have become unreadable and the combination wheels are binding. Rust always showing , all thos after 1 month in use. Do not buy for outdoor use
J**E
Tolles, sicheres Schloss
Das Schloss sehr massiv und schwer. Das empfinde ich als gut und angenehm. Es hat jedoch einige Zeit gedauert bis ich verstanden habe wo der Zahlencode zu finden ist. Zusammen mit der stabilen Kette, die ich gekauft habe ein sehr sicherer Schutz.
R**1
Perfetto
Tutto ok
C**N
Solide
Solide et simple d'utilisation
R**S
Heavy duty!
Very solid, heavy duty lock. Comes with a key (don't loose it!) to reset the combo when you need to. Number dials are tough to turn, but I take that as a sign of it's robustnesss--if you have weak fingers, maybe not the lock you want.
Trustpilot
5 days ago
1 month ago