

🔐 Lock in your peace of mind with customizable, weatherproof strength!
The Master Lock 178D is a compact, black combination padlock featuring a resettable 4-digit code, a hardened steel shackle for cut resistance, and a weather-resistant solid zinc body. Designed for indoor and outdoor use, it offers versatile security for lockers, gates, and sheds. Its smart locking mechanism ensures it only locks when the combination is scrambled, preventing accidental openings. Trusted by thousands with a 4.6-star rating, this lock balances convenience, durability, and reliable protection.





| ASIN | B0009V1WMA |
| Best Sellers Rank | 88,458 in DIY & Tools ( See Top 100 in DIY & Tools ) 225 in Combination Padlocks |
| Brand | Master Lock |
| Colour | Black |
| Control Method | Touch |
| Controller Type | Hand Control |
| Country of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 13,930 Reviews |
| Finish | Painted |
| Included Components | 1 padlock |
| Item Dimensions | 33 x 51 x 84 millimetres |
| Item Type Name | Set Your Own Combination Lock |
| Item Weight | 136 g |
| Item dimensions L x W x H | 33 x 51 x 84 millimetres |
| Lock Type | Combination Lock |
| Lock type | Combination Lock |
| Manufacturer | Master Lock |
| Material | Zinc |
| Model Number | 178D |
| Recommended Uses For Product | Security |
| Recommended uses for product | Security |
| Shape | Square |
| Special Features | Resettable Combination Lock |
| Special feature | Resettable Combination Lock |
| Style | Standard |
| UPC | 354123436162 |
| Unit Count | 1.0 Count |
R**D
Awesome little lock.
This is a light and smallish look, with the shackle about 1-inch (thumb-tip to thumb-knuckle) across. A determined thief will kill it with a bolt cutter without too many problems, but as a casual deterrent it'll do a great job. The combination mechanism is in the bottom of the lock, with a small plastic "skirt" around it that will direct water away from the mechanism unless you install the lock the wrong way up! It's also quite neat in that it will only re-lock after you have scrambled the access code. If you try to close the lock with your desired combination still set, it'll refuse to lock. You can't click it closed but inadvertently leave it openable just with a pull. Setting or altering the combination involves a separate side key that is used to override the security mechanism - provided you have entered your existing code first. You will need to keep this side-key safe somewhere. Value for money, yes! We have other Master locks and they work well even after years in the elements. It's a bit bulky compared to a key lock, but seems solid enough.
D**S
Fantastic lock
I bought this a few months ago for my locking up my shed. I wanted a coded lock to avoid having another key. The lock is very sturdy and secure and absolutely no rust so far. Very happy with my purchase
A**X
A good visual deterrent but not much else.
This is a nice, easy to use, sturdy combination lock however it should only be used as a visual deterrent. Unfortunately the lock is not shielded and a small shim or knife can be pushed past the dials to bypass the locking mechanism in less time than it takes to enter the combination.
J**A
Poor product
Poor product, stopped working inside 3 months, not of saleable quality
Trustpilot
3 weeks ago
1 month ago