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๐ Lock in your security, unlock your peace of mind.
The Master Lock 140D is a 40mm solid brass padlock featuring a hardened 6mm steel shackle and a 4-pin cylinder with dual locking levers, designed to resist corrosion, cutting, picking, and prying. Ideal for securing backpacks, lockers, and storage, it combines compact size with robust protection, all backed by a Limited Lifetime Warranty from a trusted industry leader.























| ASIN | B00004SQL7 |
| Additional Features | Not_Performance_Used |
| Best Sellers Rank | #6,541 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Keyed Padlocks |
| Brand | Master Lock |
| Brand Name | Master Lock |
| Color | Brass |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.6 out of 5 stars 3,492 Reviews |
| Finish Types | Polished |
| Global Trade Identification Number | 00071649375507 |
| Included Components | Keyed Padlock |
| Item Dimensions | 0.2 x 1.57 x 2.76 inches |
| Item Type Name | Solid Brass Keyed Padlock |
| Item Weight | 0.12 kg |
| Item dimensions L x W x H | 0.2 x 1.57 x 2.76 inches |
| Lock Type | Key Lock |
| Manufacturer | Master Lock |
| Manufacturer Part Number | 140D |
| Manufacturer Warranty Description | LIMITED WARRANTY |
| Material | Brass |
| Material Type | Brass |
| Model Name | 140D |
| Model Number | 140D |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Recommended Uses For Product | Gate |
| Shape | Rectangular |
| Special Feature | Not_Performance_Used |
| Style Name | 7/8-Inch |
| UPC | 071649375507 |
| Unit Count | 1 Count |
A**.
A great value for the price
This master lock I purchased I was so impressed with it how well itโs made solid canโt pick it not worried to keep my items secured with this lock. Probably werenโt the best lock side purchased in years. Iโve had other MASTER locks in the past, but this one really took me by surprise of how strong how well it made. I would recommend anybody that wants to buy a secure lock for his belongings.
R**N
Great Step Up for Beginners - Perfect for Yellow Belt Practice
Iโve gotten pretty decent at picking standard locksโusually, I can get through them in under 10 seconds. However, this Master Lock 140 definitely puts up a fight! It took me about 45 seconds to get it open the first time, which is exactly the kind of challenge I was looking for. โThe Highlights: โSecurity Pins: Whatever is inside (likely a spool) provides great feedback and resistance. โRotation: You can really feel the core movement and counter-rotation, which is perfect for learning how to handle security pins. โBelt Ranking: If youโre following the LPU (Lock Picking United) rankings, this is a solid choice for Yellow Belt practice. โIโm sure Iโll get my time down as I get used to it, but I highly recommend this for anyone moving past the absolute basics and looking to practice their "feel" for security pins.
A**R
Strong and secure
I bought this lock to accompany a lock cable, and I have found it to be lightweight, easy to use, and a good value for the money. It appears durable and since it's brass, I feel reasonably confident that it will be weather resistant. Plus, it's a master lock and that comes with it's own degree of confidence. It came with two keys that feel like they'll hold up well
C**A
The right lock for the job!
Works as expected. It the right size for the health club and public pool lockers.
A**R
5 ๐
Purchased these items before except for the Master Lock Padlock. Needed another padlock or two more my work lockers. Very nice indeed. Amazon driver is always courteous, friendly, and respectful when delivering items. Kudos๐
M**.
Great Lock
Exactly the lock I needed to replace. Lost the key on previous one, never failed me, I failed the lock. Received this the next day, now I can go out on my bike again and stay in the store / restaurant a few minutes....maybe. (mine came with TWO keys. not one)
A**D
Nicely made, not very secure.
The good: the build quality is decent enough for a very inexpensive 4 pin lock. Great for learning the fundamentals of lock picking or keeping your kid brother out of your secret stash. The bad: Anyone besides your kid brother will be able to pop this thing open within a few seconds. Even though it's nice to look at and feels solid, it can easily be picked and it is small enough to be cut. Overall: It's a nice inexpensive deterrent lock to keep honest people honest. If someone wants to bypass this thing to get into your stuff, they can do it with ease. I'm still giving it 5 stars though because of the build quality and price combo.
D**Y
The Novice's Nemesis: Master Lock 140D, A Lockpicker's First Love
The Master Lock 140D Padlock, a humble guardian of lockers and sheds, finds itself in the limelight not for its impregnability, but for its role as the beginner's guide in the lockpicking odyssey. With three stars twinkling in its aura, this lock is the embodiment of simplicity, a stepping stone for those embarking on the art of lock manipulation. At first glance, the 140D looks like any regular padlock โ sturdy, reliable, and unassuming. But to the aspiring lockpicker, it's akin to a tutorial level in a video game; challenging enough to be interesting, but easy enough to not cause a furrowed brow. It's like the padlock is whispering, "Come, give it a try." The journey of picking this lock is surprisingly brief, a testament to its straightforward mechanism. For those seasoned in the art, this lock might seem like child's play. But for the neophyte with picks in hand, it's a confidence booster, the "aha!" moment when the pins click, and the shackle springs open. However, it's this very ease that speaks of its low security. The 140D isn't the lock you'd entrust with your most prized possessions. It's the equivalent of a polite 'keep out' sign, deterring only the most casual of intruders. In the high-stakes world of security, this padlock is more of a gentle gatekeeper than a formidable fortress. On the flip side, its affordability is a plus. It's a cheap ticket to the lockpicking hobby, a small investment in a skill that can be both practical and entertaining. It's the sort of purchase that won't leave your wallet feeling too light. TL;DR: The Master Lock 140D is a beginner-friendly padlock, perfect for lockpicking learners but not for serious security. Its ease of picking and low price make it a great starting point for hobbyists, but it's not the guard dog of the lock world. Three stars for being a gateway to lockpicking, but not a guardian of valuables.
A**H
First class, highly recommended, excellent in every way!
First class, highly recommended, excellent in every way!
R**S
Solid
Good solid lock
M**D
Good quality
Great little lock
M**.
Awful security
Absolutely awful security, but great for beginners to lock-picking. Iโve had trouble learning on other brand locks, because they keep my unskilled hands out too effectively, but Master have provided exactly what I wanted in the 140D, in a lock that yields to my unsophisticated attacks.
P**L
Compact quality case harden Brass Padlock
Solid Padlock, supplied with 2 keys. Confident that my shed is secure.
Trustpilot
2 months ago
2 months ago