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

4.7 4.7 out of 5 stars 3,983 ratings
$19.28
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1 Pack
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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
See all reviews

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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 information

Technical Details

Additional Information

Warranty & Support

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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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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.

Top Brand: Master Lock

Highly Rated
100K+ customers rate items from this brand highly
Trending
100K+ orders for this brand in past 3 months
Low Returns
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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$19.28$9.99$20.49-6% $14.99
Typical: $15.99		$8.88-7% $24.20
List: $25.99
Delivery
Get it as soon as Saturday, May 4
Get it as soon as Saturday, May 4
Get it as soon as Saturday, May 4
Get it as soon as Saturday, May 4
Get it as soon as Saturday, May 4
Get it as soon as Saturday, May 4
Customer Ratings
4.74.7 out of 5 stars3,983
4.54.5 out of 5 stars1,422
4.54.5 out of 5 stars899
4.54.5 out of 5 stars933
4.54.5 out of 5 stars381
4.64.6 out of 5 stars6,373
Sturdiness
4.4
4.3
4.4
4.3
4.3
4.1
Lock Feature
4.4
4.2
4.3
4.1
4.7
4.2
Value for money
4.0
4.2
4.4
4.3
4.2
3.9
Easy to use
—
5.0
4.4
5.0
—
3.4
Weatherproof
—
—
4.3
4.3
4.2
4.0
Sold By
Amazon.com
Daygos.LLC
lxfpadlock
sanxin lock Co. Ltd.
Vervida
Amazon.com
lock type
4-pin cylinder and dual locking lever mechanism
dicsus keyed padlock
Key Lock
Key Lock
Key Lock, Keyed Padlock, Disc Padlock
Key Lock
number of items
1
—
—
—
1
1
material
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel, Steel
Stainless Steel, Brass
Brass, Rubber, Stainless Steel, Steel
shape
✗
Round
Round
Round
Round
Round
finish type
Polished
Polished
Polished
Polished
Polished
Polished

Customer reviews

4.7 out of 5 stars
4.7 out of 5
3,983 global ratings

Customers say

Customers like the quality, performance, and value of the lock. For example, they mention it's well built, effective, and perfect for the job. Some are satisfied with versatility, ease of use, and weight. That said, 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. For example, they mention it's well-built, sturdy, and secure. Some appreciate that it comes with only two keys.

"These are very durable." Read more

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

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

"We used a PODS container for our recent move and this lock worked great on the POD locking latch" Read more

186 customers mention166 positive20 negative

Customers like the performance of the lock. For example, they say it works well, is effective, sturdy, and perfect for the job. Some mention that the design makes it difficult for thieves to break in. Overall, most 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 are satisfied with the value of the lock. They mention that it is a terrific lock for the price, works for money, and is reasonable for the protection and function. Some appreciate the design.

"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 find the lock versatile and useful for different purposes. They mention it's fantastic for storage units, lockers, and public storage units. Some say it'll work well for a cargo trailer and other things. Overall, customers are satisfied with the quality and functionality of the product.

"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

"Perfect for storage unit since the lock is designed so there is very little room for anyone to try and cut lock and break in...." Read more

25 customers mention25 positive0 negative

Customers find the lock easy to use, simple, and safe. They also say the curved shank makes it simple to install and remove. Customers also say that the keys are easy to operate and pick.

"...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. They mention it's durable, light weight, and sturdy. Some love the size and weight of 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 it fits as needed and is easy to open and close, while others say it's too small and doesn't fit their standard locker. The hasp diameter is too big and the lock must hang vertically between the gate.

"...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 are mixed 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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Top reviews from the United States

Tracy
5.0 out of 5 stars Top quality Master brand
Reviewed in the United States on January 20, 2024
Size: 1 PackVerified Purchase
Works as it should. Perfect for storage locker.
Helpful
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Betty Roark
5.0 out of 5 stars Good locks
Reviewed in the United States on April 14, 2024
Size: 3 Pack - Keyed AlikeVerified Purchase
These are very durable.
Helpful
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R Green
5.0 out of 5 stars Tough Protection
Reviewed in the United States on August 25, 2023
Size: 1 PackVerified Purchase
Used this on a container and it would be very tough to break into. Not much space to get a cutting tool and no way to break the key hole. This would not be the failure point.
Helpful
 Report
Kelly Reich
5.0 out of 5 stars Durable
Reviewed in the United States on December 21, 2023
Size: 1 PackVerified Purchase
I think I ordered this to lock my chest in college because I didn’t trust my roommate. Or maybe it was just while I went away during the breaks. Anyways the lock was chunky and durable and did the job.
Helpful
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pgfesq
4.0 out of 5 stars A Good VALUE Alternative
Reviewed in the United States on June 9, 2023
Size: 1 PackVerified Purchase
This Master Lock variation is not quite as sturdy & "well built" as the other DISCUS locks offered by Master, BUT when Value & cost is a very important consideration, this lock is a GREAT choice.
2 people found this helpful
Helpful
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Joseph Gillum
5.0 out of 5 stars Nice quality.
Reviewed in the United States on January 28, 2024
Size: 3 Pack - Keyed AlikeVerified Purchase
Secure and all use the same key. Perfect.
Helpful
 Report
Dave Hartigan
5.0 out of 5 stars I needed this!
Reviewed in the United States on April 12, 2024
Size: 1 PackVerified Purchase
The one I had only had one key (that I could find) and I needed one that had two keys so I could give my son one! This one was perfect!
Helpful
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RN904
5.0 out of 5 stars Worked great on the PODS container
Reviewed in the United States on August 21, 2023
Size: 1 PackVerified Purchase
We used a PODS container for our recent move and this lock worked great on the POD locking latch
3 people found this helpful
Helpful
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Top reviews from other countries

Translate all reviews to English
Curtis McIntyre
5.0 out of 5 stars Great Quality
Reviewed in Canada on June 22, 2023
Size: 3 Pack - Keyed AlikeVerified Purchase
Always happy with this brand. Good sturdy quality.
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MARIA DE LOURDES PADILLA SANCHEZ
5.0 out of 5 stars Seguros
Reviewed in Mexico on November 27, 2019
Size: 2 Pack - Keyed AlikeVerified Purchase
Super buena calidad
One person found this helpful
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Ashish Jain
5.0 out of 5 stars Excellent
Reviewed in India on March 9, 2019
Size: 3 Pack - Keyed AlikeVerified Purchase
Excellent
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Aidan Lam
5.0 out of 5 stars Very good
Reviewed in Australia on September 4, 2022
Size: 1 PackVerified Purchase
Very good
Report
lyle eberle
5.0 out of 5 stars locks
Reviewed in Canada on February 5, 2024
Size: 3 Pack - Keyed AlikeVerified Purchase
locks that are very hard to cut work good when open and close them you get only 2 keys would be nice with 2 per lock
One person found this helpful
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