








🔐 Lock in your security, unlock your peace of mind.
The Master Lock ProSeries 1177D is a commercial-grade, resettable combination padlock featuring a corrosion-resistant brass body and an ultra-tough octagonal boron-carbide shackle. With 10,000 possible combinations and no reset tool required, it offers customizable security. Its weatherproof design includes dust covers and shackle seals for reliable performance in harsh environments. Ergonomic dials enable easy use even with gloves or in darkness, while a deadlocking mechanism protects against prying and shimming. Backed by a lifetime guarantee, this lock is engineered for professionals demanding durability and convenience.

| ASIN | B007UXUC1C |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #7,840 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #27 in Combination Locks |
| Brand | Master Lock |
| Certification | not_applicable |
| Color | Brass |
| Control Method | App |
| Controller Type | Jog dial |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,579) |
| Date First Available | March 29, 2012 |
| Finish | Polished |
| Finish Type | Polished |
| Global Trade Identification Number | 00071649165900 |
| Included Components | Unit^Instruction Guide |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 14.2 ounces |
| Item dimensions L x W x H | 1.27 x 2.25 x 3.43 inches |
| Item model number | 1177D |
| Lock Type | Combination Lock |
| Manufacturer | Master Lock |
| Material | Brass |
| Model Name | Master Lock Padlock, ProSeries Set Your Own Combination Lock, 2-1/4 in. Wide, Brass, 1177D |
| Number of Pieces | 1 |
| Part Number | 1177 |
| Product Dimensions | 1.27 x 2.25 x 3.43 inches |
| Recommended Uses For Product | Security |
| Shape | Rectangular |
| Size | No Size |
| Special Feature | Keyless, Padlock |
| Special Features | Keyless, Padlock |
| Style | Lock |
| UPC | 071649165900 |
| Warranty Description | Warranty |
W**R
Secure, Heavy-Duty Lock That’s Simple to Program
This lock was extremely easy to program, and the build quality really stands out. I ended up buying two—one to secure my shed door and another for my water-barrel storage cabinet—and both fit perfectly through the existing latches. The shackle is thick and solid enough that it would be very difficult—if not nearly impossible—for someone to cut through with a bolt cutter. The overall feel is heavy, durable, and well-made, and the design looks great as well. It’s the kind of lock that would make most would-be thieves think twice and move on. I’m very impressed and feel confident using it.
S**N
Reliable lock
Very durable, easy to use, and locks well
J**D
Master Lock Tight
Solid. I wish it were about 1/2 inch longer. Tight fit at my storage unit.
G**A
Sturdy lock.
Nice lock. Sturdy. The ad picture looks like you get 2 locks. It is only one though. I would change the picture to only one lock, so as not to confuse people. I thought it was two as shown in the photo. Bottom rubber a little flimsy. I like being able to set my own combination
M**T
Definitely worth the money to deter quick thefts
Have been using this as my gym lock (overkill, I know - but as I got my laptop stolen, I'm done screwing around) - it fits with very little clearance left in the lock hole (about the width of a human hair), so its a perfect fit. You cannot move it around or yank on it very easily. It is incredibly heavy and rather intimidating looking. The brass armor shroud around it is incredibly sturdy and does a good job of making life difficult for anyone with a bolt cutter. The boron alloy shackle is also much higher quality than the standard locks you find on the shelves, with a very true metallic feel. The combination are definitely on the stiffer side - they will not easily glide like tiny padlocks. In 3 months, I have not experienced the "sticking" issue, but the tumblers definitely prefer to be turned one way, which is not really a big deal for me. It is important to note that the lock only opens one way, and the dials will get easier to move with use, but they are STIFF. Personally, I like it as it reinforces the whole tough look of the lock. The rubber bumper, which I presume is to keep the lock from scratching whatever it is rubbing against, is flimsy and I lost it on the third use. Again, not a big deal. No padlock is going to be a foolproof solution in the world of sledgehammers, shotguns, and bolt cutters - but this intimidating looking lock definitely fits the bill to help persuade a would-be thief to perhaps move onto an easier target - (or at least convince them that bringing giant bolt cutters to a gym is too risky).
D**H
Not highly weather resistant
The description says this is highly weather resistant but that is a lie. It has frozen shut twice since owning it for a month in a northern winter climate.
J**N
Careful when resetting the combination.
Very secure. Impressively strong and heavy. When you set a new combo be sure to follow the instructions to a "T", because if you goof up it will have neither the old combo nor the new and you will not be able to open it. None of the self-help suggestions on both the Amazon website and the MasterLock website worked. So I had to return it for a refund. To be fair, I have another of these that I've had better luck with. Works fine. Really strong. But when I set a new combo on it I am really careful!
B**O
Rugged and durable
This is the second set of locks we purchased for our church ministry after being burglarized. The previous padlocks were cut so this will make it much more difficult to cut. The quality of Master Lock stood out and it's also designed for outdoors.
P**A
Excellent product
O**R
Very good for household security - I use it for my front gate and am very happy with it
B**E
Always waiting to write a review till I've had product for a while. I've had this on my outside shed for over a year. It has seen all the weather elements and is still working as I hoped. One recommendation I have for folks with locks that see the elements is to spray WD40--12/34 or some other lubricant down into the lock mechanism. Best is when you have the lock open and spray into the open hole where the locking arm goes into the lock itself. You wouldn't believe the difference this makes in keeping your lock working good and the tumblers turning easily. Folks should do this on a combination lock or a key lock.......
C**N
Pour en avoir testé plusieurs, un des meilleurs rapport qualité prix pour un cadenas à code.
V**N
Bought it because of the reviews. And not regret it.