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Master Lock 40D Stainless Steel Discus Padlock with Key,Silver

4.7 4.7 out of 5 stars 3,971 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Keyed Padlocks by Master Lock

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Available at a lower price from other sellers that may not offer free Prime shipping.
1 Pack

Purchase options and add-ons

Brand Master Lock
Special Feature Cut Resistant
Lock Type 4-pin cylinder and dual locking lever mechanism
Item Dimensions LxWxH 0.2 x 6 x 3.4 inches
Material Stainless Steel

About this item

  • For indoor and outdoor use; disc padlock with key is best used as a storage lock and for garages, sheds, and trailers.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
  • Key lock features stainless steel construction and hardened steel shackle for increased strength and security
  • 4-pin cylinder and dual locking lever mechanism provides pick and pry resistance, shrouded design minimizes shackle exposure and protects against bolt cutter attacks
  • 2-3/4 in. (70 mm) wide lock body; 3/8 in. (10 mm) diameter shackle with 5/8 in. (16 mm) length, 3/4 in. (19 mm) width
  • Includes one padlock, two keys
See more product details

Customer ratings by feature

Sturdiness
4.4 4.4
Lock Feature
4.4 4.4
Value for money
4.0 4.0

Frequently bought together

$15.50
Get it as soon as Tuesday, Apr 2
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$79.95
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Sold by Heartland Lock and ships from Amazon Fulfillment.
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$39.18
Get it as soon as Tuesday, Apr 2
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Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Master Lock 40D Stainless Steel Discus Padlock with Key,Silver


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From the manufacturer

Master Lock disc lock, storage lock

Master Lock 40DPF Stainless Steel Discus Padlock

Outdoor Lock

Cut Resistant Lock

discus lock

Outdoor Lock

Stainless steel body for maximum strength, reliability and corrosion resistance.

Strong Security

Fully shrouded design minimizes shackle exposure and protects against bolt cutter attacks. Double deadbolt locking for superior pry resistance. 4-pin cylinder helps prevent picking.

Best Used as a Storage Lock

  1. Shrouded body protects shackle against cutting and prying
  2. Weather resistant stainless steel
  3. Pin tumbler cylinder for increased pick resistance
  4. Cut resistant 3/8 in. (10mm) hardened steel shackle

Master Lock For Everything Worth Protecting

Product Description

The Master Lock 40DPF Stainless Steel Discus Padlock features a 1-9/16in (70mm) wide stainless steel body for maximum strength, reliability and corrosion resistance. The fully shrouded design minimizes shackle exposure and protects against bolt cutter attacks. The 3/8in (10mm) diameter shackle is 5/8in (16mm) long and made of hardened steel, offering extra resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual locking levers provide resistance against prying and hammering. The Limited Lifetime Warranty provides peace of mind from a brand you know and can trust.

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This Item
Master Lock 40D Stainless Steel Discus Padlock with Key,Silver
Master Lock 40D Stainless Steel Discus Padlock with Key,Silver
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Price-15% $15.50
Typical:$18.22
$9.99$7.99$8.88$15.99$7.97
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Sturdiness
4.4
4.3
4.4
4.3
4.0
Lock Feature
4.4
4.2
4.7
4.1
3.9
Value for money
4.0
4.2
4.3
4.3
4.4
Easy to lock
3.4
4.1
4.9
Sold By
Amazon.com
PuromaDirect
Chunzhiqicao
Vervida
sanxin lock Co. Ltd.
QWORK
lock type
4-pin cylinder and dual locking lever mechanism
Key Lock, Keyed Padlock, Disc Padlock
Key Lock
Key Lock, Keyed Padlock, Disc Padlock
Key Lock
Key Lock
material
Stainless Steel
Brass, Rubber, Stainless Steel, Steel
Copper, Stainless Steel
Stainless Steel, Brass
Stainless Steel, Steel
Stainless Steel, Steel
shape
Round
Round
Round
Round
Round
finish type
Polished
Polished
Polished
Polished
Polished

Customer reviews

4.7 out of 5 stars
4.7 out of 5
3,971 global ratings

Customers say

Customers like the quality, performance, and value of the lock. For example, they mention it's well made, effective, and perfect for the job. That said, some are happy with versatility, ease of use, and weight. Opinions are mixed on fit and ease of opening and closing.

AI-generated from the text of customer reviews

497 customers mention376 positive121 negative

Customers like the quality of the lock. They say it is well-made, sturdy, and holds up well. Some customers also mention that it is one of the best locks you can get, and is secure. Overall, customers are satisfied with the quality and functionality of the product.

"...Anyways the lock was chunky and durable and did the job." Read more

"Secure and all use the same key. Perfect." Read more

"...Sturdy, great quality, and not easy to break as described in the specifications for this item...." Read more

"...As far as I can tell, these locks are just as sturdy and well made as the one I have. I bought two locks in two separate packages...." Read more

186 customers mention166 positive20 negative

Customers like the performance of the lock. They say it works well, is effective, and is perfect for the job. Customers also appreciate the good design, which makes it difficult for thieves to cut the lock to lower it. Overall, customers are satisfied with the performance and durability of the product.

"Works as it should. Perfect for storage locker." Read more

"...Anyways the lock was chunky and durable and did the job." Read more

"...Too big for my purposes. Fool me once… It’s a nice-looking lock and feels pretty solid, otherwise." Read more

"...3 locking positions, 3 locks. Works out nicely. I didn't experience the issue I read having to jiggle the keys to get them to work...." Read more

101 customers mention97 positive4 negative

Customers appreciate the value of the lock. They say it's a terrific lock for the price, works for money, and is a good purchase. Some customers also mention that the design makes it difficult to pick.

"This is a great lock for what it costs and what it is...." Read more

"Perfect. Worked great as an inexpensive but quality lock for our POD" Read more

"Cheaper than other local stores, did the job, quality made." Read more

"I purchased this lock to use at CubeSmart self storage in Tucson AZ. It's cheaper than what they sell at the office, while offering the same level..." Read more

37 customers mention37 positive0 negative

Customers like the versatility of the lock. They mention that it's fantastic for storage units, excellent for the storage locker, and perfect for public storage units. Some say that it works well for a cargo trailer and other things. Overall, customers are satisfied with the product's versatility.

"Works as it should. Perfect for storage locker." Read more

"...For the price point it seems great for a storage unit you don't access to frequently and don't need climate control...." Read more

"This lock type is recommended for storage units. It sticks a little when opening compared to the locks sold by Public Storage but works great...." Read more

"Great quality, good for use at storage lockers...." Read more

25 customers mention25 positive0 negative

Customers find the lock easy to use. They mention it's simple to install and remove, and the keys are easy to operate. The curved shank makes it simple to access and impossible for anyone to cut.

"...Easy management so we don’t have 1 key per lock.100% recommended." Read more

"It does its job well. Light weight and easy to use." Read more

"...It is sturdy, corrosive resistant, and easy to use when having to store my stuff in a POD when moving from my apartment to my new house...." Read more

"They work, easy action on the key, and very hard to cut. perfect." Read more

23 customers mention18 positive5 negative

Customers like the weight of the lock. For example, some say it's super heavy and durable, while others say it is light weight and easy to use. That said, they appreciate the size and weight of these locks.

"It does its job well. Light weight and easy to use." Read more

"...Lock something with one lock and s have a spare to drop on your foot! Heavy, study, keyed alike, so if you lose the keys, you are doubly out of lock...." Read more

"...The shape makes it hard for someone to cut. It has a good weight to it and does not feel cheap." Read more

"...I just received this lock. For the most part, its studier and heavier than the ordinary combination padlocks I used in the past...." Read more

67 customers mention29 positive38 negative

Customers are mixed about the fit of the lock. Some mention that it fits as needed and is easy to open and close, while others say that it was too small and doesn't fit your standard locker.

"...Not much space to get a cutting tool and no way to break the key hole. This would not be the failure point." Read more

"...I bought two locks in two separate packages. The keys fit well and the locks open and close properly and easily...." Read more

"...Too big for my purposes. Fool me once… It’s a nice-looking lock and feels pretty solid, otherwise." Read more

"I bought this lock in May. I was very happy with it. It fit my storage unit perfectly so that it would be almost impossible for someone to get past..." Read more

42 customers mention20 positive22 negative

Customers have mixed opinions about the ease of opening and closing the lock. Some mention that it opens smoothly, while others say that it struggles to open.

"...The lock becomes frozen and will not open." Read more

"...The keys fit well and the locks open and close properly and easily. They also have two separate keys and are not interchangeable...." Read more

"Great locks but they have difficulty opening up sometimes" Read more

"...All three of mine seem to open smoothly as I would expect...." Read more

It fit really nicely on my pod-like storage moving device but it was ...
4 Stars
It fit really nicely on my pod-like storage moving device but it was ...
This is a really decent lock. I bought it for moving. It is solid enough in construction, there's no way you'd be able to get a bolt cutter in there to break it off. It fit really nicely on my pod-like storage moving device but it was too small for the moving truck. I ended up using a cheap, thinner lock for the truck. That was really the most disappointing part about this purchase - it is allegedly the same thing you can rent from the moving truck company but then it doesn't fit on their doors. Perhaps a larger version of this would have worked a little better but I am not sure. I took off one star because the locking mechanism sticks a little bit every couple of times you use it. This is especially frustrating when the lock is locked on to something and you have to try to wiggle it around to get it to behave. Overall a solid purchase but be careful about the thickness you need since one size does not fit all.
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