Best Master Lock for Outdoors Review in 2020

Although it may not completely prevent a criminal from pursuing their unpleasant plan, a good outdoor master lock, when matched with an excellent chain to guard a bicycle or to lock it down in a garden shed, maybe an efficient, cost-effective approach to secure extra protection to your valuables. In certain cases, the vision of a strong padlock may be sufficient to influence a thief to look somewhere else for easier lock picking.

When we talk about padlocks, the main key is security. Nonetheless, depending on the usage of your lock, there can be some elements that become a factor. If you are looking for a good padlock for outdoors, then you should get the one that is both efficient and durable.

Best Master Lock for Outdoors

Fortunately, we came up with a list of master locks that are ideal for outdoors to assist you in deciding which one will suit best for you. These products were evaluated based on different prospects, including stability, durability, usability, and price, to determine the best in the market.

When it comes to securing your valuables, you would want to use the best lock to ensure their safety. Whether you are searching for added protection, affordable, or an easy-to-use lock, these products comprise all the essential information to guide you in choosing the best master lock for outdoors. You will see something suitable for your needs here.

1. Mul-T-Lock MT5+#13 C Series

Best Overall

  • Includes 2 keys
  • 1 MUL-lock key code ID Card
  • Laser cuts sliders
  • Prevents unauthorized duplication
  • Anti-drill protection feature

The Mul-T-Lock MT5+#13 C Series is an accomplishment. This model is simply an improvised version of the MT5 plus. The particular addition is a classification of sliders. These sliders are laser cuts on the key-side, which function in combination with the dimple chops on the two sides of the key to turn the cylinder resistive to picking.

The active component in the key inhibits unapproved duplication. It would take so much of knowledge to ultimately get through this lock. Different from other kinds of improvements to lengthen the patent for the other keys, the sliders of Mul-T-Lock do not present a risk in the security of the cylinder. If, by any means, the sliders are put into jeopardy, the padlock would still have to be picked.

Also, the padlock features a shutter that keeps intruders from picking the cylinder while being locked. It is probably only the core that can be picked, but not in the body. It would take relatively a battle just to get access to the pins. That similar protection above the keyway also facilitates anti-drill protection.

Product Rating: 5/5

2. Abloy PL 362

Best Key Combinations

  • Case-hardened steel body
  • Top-loaded cylinder
  • Physical protection against key duplication
  • Case hardened boron steel shackle
  • Durable

The Abloy PL 362 is highly impressive. It features a disk detainer mechanism with more than 2 billion possible combinations of the key. The lock has never been picked or surmounted while in the padlock. The keyway is broken up into the body of the lock, which brings the further struggle to pick.

This padlock is one of the biggest padlocks in the market nowadays, and it is a stronghold of a lock. Its body is built from hardened steel. The shackle is made from a boron steel alloy. Its body is tougher than many drill bits, securing anti-drill protection as well as a protection against invasion to the lock body.

The shackle is more guarded than the body, and it is more guarded with the hardened steel shroud.

Product Rating 5/5

3. Stanley Hardware S828-160 CD8820

Best Value

  • Durable
  • Easy-to-use
  • Fully shrouded
  • Patented keyway
  • Dual stainless steel ball bearings

The Stanley Hardware S828-160 CD8820 encloses a stainless steel shackle which drillers, cutting bolts, and other machines cannot get through. It features a dual ball bearing locking system, which is very effective in repelling attacks. The body is made from hardened steel, which serves as a shield to the whole foundation.

This padlock exhibits a very known 6-pin re-keyable system with the reinforcement of anti-pick pins and brass cylinder. Stanley’s re-keyable structure addresses the issues of many university complexes and business establishments. It is relative the same with the SFIC lock systems. With this facility, it is almost inconceivable to get through the picking system of this lock.

The smart lock provides a good ground of itself because of its usability and durability. If you are looking for something that would keep down the weight of anything you intend to lock-up, then this is padlock would be the best option. Through its 6-pin core and solid integrated body, even the expert pickers would find it hard to penetrate this padlock and surely will take time for them to break.

However, if you are planning to get extra keys, this can be an issue with the Stanley Hardware. This padlock is not so accessible to extra keys. Considering its distinct 6-pin locking system and the re-keyable mechanism, luring for extra keys from any lock hardware stores is impossible.

Product Rating: 4.5/5

4. Master Lock 141D

Best Value

  • Includes 2 keys
  • Stylish vinyl covering
  • Has 4-pin cylinder
  • Broad lock body
  • Hardened steel shackle

The Master Lock 141D is a simple but long-lasting padlock. It was designed for both outdoor and indoor use. It has been proven to work effectively in securing a safe, a locker, or a gate. Its body is covered with a 40mm wide black vinyl to protect it from corrosion and scratch. The 6mm diameter shackle has a length of 21mm and is made from hardened steel, providing added defiance to sawing and cutting. It has a 4-pin cylinder inhibits picking. It also has dual locking levers that serve to resist hammering and prying.

You will see 2 colored keys for similar padlock if you purchase the Master Lock 141D. Considering its performance and design, it would be fair to say that this lock would make a practical option for many people. The common reason why people choose to buy this model is because of its highly attainable cost.

Master Lock 141D has been proven to endure the weight and is the most precise at closing and opening the shackle. Perhaps we cannot conclude that this is the toughest one in the market; however, its practicality and simplicity makes it faster and easier to use compared to other models.

Product Rating: 4.5/5

5. Master Lock 40DPF Discus Padlock

Best for Storage Units

  • Stainless steel lock construction
  • 4-pin cylinder
  • Broad lock body
  • Hardened steel shackle
  • The disc lock is ideal for storage lock

With the use of Master Lock Discus Padlock, you are assured that your pieces of stuff are safe even if you are outdoor. This padlock is designed to endure any elements and all kinds of interfering.

This padlock is one of the most impressive circular padlocks available in the market. Its body features a stainless steel discus, which is ideally used for outdoors, particularly for stowing trailers, trucks, sheds, and bikes. It also has a credible 4-pin locking system as well as a dual locking lever to provide extra security and stability against attacks and drills.

Considering that it comes in a circular shape, it means that it is enough to guarantee better defiance against drilling machines and bolt cutters. Master Lock 40DPF Discus padlock allows no chance for mistakes – credit is given to its solid yet powerful-locking body.

The lock itself comes in a fair size with a diameter of the shank that is 5/8 inches. It secures 2 keys and 1 padlock. It also has a key-retaining capability. Other details of Master Lock 40DPF Discus include a steel shank, corrosion-resistant body, and a deadbolt locking system.

Product Rating: 4.5/5

6. Desired Tools Padlock 4-Digital Combination Lock

Best Choice for Long-Term Warranty

  • Offers 10,000 combinations
  • Easy-to-read numbers
  • Provides an option to choose a color
  • Set and reset personal code

The Desired Tools Padlock 4-Digital Combination Lock is another great locking device equipped with a digit combination. It is the best padlock to get if intended for multiple purposes. This padlock serves up to 10,000 combinations, which you can reprogram, reset, and review according to your selection.

The best thing about this padlock is that it comes with a 3-year warranty. Its body is built from a zinc alloy, which is anti-rust and waterproof. Thus, you will have peace of mind when you use it outdoors.

This padlock is easy to use, which lets you set and reset the combinations multiple times, depending on how many times you want to do it.

Product Rating: 4.5/5

7. ABUS 37-80 Granit Alloy Steel Padlock

Best Step-Up Pick

  • 6 tons of tensile resistance
  • Key-retaining feature
  • Hardened steel base plate
  • Core-hardened body lock
  • Pull resistance

The ABUS 37-80 Granit Alloy Steel Padlock originates from a well-known company. ABUS is recognized in providing powerful, accurate, and operational security systems. Considering its relatively higher cost and standard, this padlock is believed to have the best security lock. With more than 6 tons of tensile resistance and lasting finishing, this padlock renders amazing resistance and strength against invasions. It is also coated with black granite to ensure protection against rust.

This padlock features a disc cylinder incorporated with a core-consolidated body and shank. For further endurance, ABUS 37-80 characterizes a curdled base plate as well as a key-retaining attribute in case there will be physical invasions on the door lock.

The best thing about the ABUS 37-80 padlock is that even though it is equipped with premium features that may seem intricate to some, it is amazingly simple to lock and unlock through the use of a key. Another outstanding thing about it is that after unlocking it, the shackle snaps open on two sides. The shank feature is available in some contemporary padlocks, and that is specifically what makes this padlock essential.

Product Rating: 4.5/5

8. Medeco M3 Shrouded Padlock

Best weathering Resistant

  • Includes 2 keys
  • Shrouded shackle design
  • Patented Medeco3 keys
  • Hardened stainless steel in the cylinder

The Medeco M3 Shrouded Padlock has a shroud that is composed of hardened steel which aims to protect the hardened steel shackle. The substance is the newest M3 model. There may be some discoveries about the fragility of these cores; however, it would take enough understanding and knowledge with lock picking to successfully overpower them.

This padlock is not as insusceptible to undercover invasions as what people believe; however, they still establish a massive volume of security. Perhaps the reason why this padlock is not often used is that it is built from brass. That allows the body as the most susceptible part. But other than this, this padlock is very flexible.

It is made to be very renitent to outdoor conditions. Some may pay for the brand, but with Medeco M3, you get a quality padlock that will endure industrial environments and travel. Its brass body is also coated with a weathering shield so that the weakness is concealed.

Product Rating: 4.5/5


Best in Magnetic Key Mechanism

  • Uses magnetic key mechanism
  • Made from the composite alloy lock body
  • Made from hardened steel alloy shackle

EVVA is indeed an astounding company, and the EVVA MCS has still to be picked. The MCS model utilizes a magnetic key mechanism to drive the magnetic pins around within the lock. Also, it has a biting in the key which drives the standard pins. Breaking attempts have only been produced through the functioning key. Now, all these protections are available even when you are safeguarding your bags during travel.

Its body is built from a composite alloy. The shackle, on the other hand, is built from a hardened steel alloy, and it is even more guarded with a shroud.

Product Rating: 4.5/5

10. Ingersoll Padlock 10 Lever Extra Close

Best Lever Locking Mechanism

  • Detachable closed shackle
  • Lever locking mechanism with 10 levers
  • The shackle is ‘full-release’
  • Heavy-duty padlock

The core utilizes a lever locking mechanism with 10 levers. Its key looks alike to a car key than rather being a padlock key. This model is an enhanced version of the similar OS600, which only utilizes 6 levers.

This lock is shrouded in a nearly full circle, to the extent where the shackle is nearly hard to see. Aside from that, the shackle is ‘full-release’. That implies that if an intruder wants to break it, they will have to do 2 cuts and remove the chain between the gap. This padlock is heavy-duty.

Product Rating: 3/5

Tips in Buying the Best Master Lock for Outdoors

As you know, the best master lock is not a universal terminology. Rather, the best master lock for you is one that works in a manner you need it to. Getting a padlock with a huge shackle can be pointless if used for a small chain. So, how are you going to choose the best one for you?

With the numerous master locks available in the market nowadays, it may seem confusing to pick the best one. Here are some buying guides when choosing a padlock:

Type of Lock

You should decide what type of lock you would prefer. You may choose to use a padlock, cylinder lock, combination lock, or disc lock – all with different levels of reliability. Although disc locks happen to be the most used, you may encounter difficulty in finding one that works outdoors.

Size of Lock

Regardless of what type of lock you choose, you should make sure that the size of the lock would fit wherever you intend to use it. Make sure you get the measurement of the lock hole as well as the surrounding dimensions of the lock.


Most quality locks used steel. Steel is known to be durable, stiff, and very resistant to breaking and twisting. You may also encounter some models that come in hardened steel, particularly for the shackle. Hardened steel is a lot better and quite resistant to bolt cutting.

You may also encounter steel locks that have plastic or rubber housing on the exterior. This makes it easier to work with. However, you have to ensure that what is underneath is entirely steel or hardened steel. Rubber or plastic should not be a portion of the lock.

There is one particular thing to remember here. With key padlocks, most of the time, you will get a lock cylinder that is built from zinc. Although it is long-lasting, if someone is persistent to invade what is inside, a torch may help them ruin the cylinder and likely have the padlock opened.


If you intend to place your storage unit outdoors, then you should invest in weatherproof locks. It would be good to buy locks that come with hardened plastic coating or chrome to help avoid corrosion and weather damage.


As a common rule, the higher you pay for a master lock, the higher the security you get. Locks that are quite costly happen to be equipped with failsafe systems and customization for added security.

What to Avoid

As a common rule, the lesser you pay for a lock, the lesser security you get. Do not buy locks from places that offer very cheap items. Although it conclusively boils down to personal preference, some products are not worthy of trying.

Frequently Asked Questions

What are the most secure padlocks?

The most secure padlocks come in large locks, and their keys have many pins to intensify security. If you want to ensure security in your padlock, choose padlocks that exhibit either alloy steel or carbide. The better metal you get, the more secure your padlock is. Also, secured padlocks come in bigger and thicker shoulder shroud.

Is there a lock that cannot be picked?             

Yes. Pick-resistant locks normally have the additional number of tumblers or locking mechanisms so that the key will do two things simultaneously. Because of the resistance to control, these types of locks are resistant to picking.

How do you crack a combination lock?

To crack a combination lock, you need to acquaint yourself with the lock, particularly the shackle, the dial, and the body. Normally, the locking system is found on the left portion of the shackle.

For you to locate the combination, you must gently pull up on the shackle. Confirm the first number. Gently pull up the shackle and keep it in position. The dial should be turned clockwise. Carefully listen until you get the lock click. Assign the first figure of the combination as your base point.

This time, the dial should be turned counterclockwise to locate the second number. Keep a gentle pressure. You must go all the way around the system once before getting the second figure.

Next, one method of getting the third figure is merely to try each possible combination. Assign the first 2 figures as if you are set to unlock. Slowly turn the dial clockwise, trying every possible combination. Simply redo the process until you fully crack the combination.

What is the hardest lock to cut?

The hardest lock to cut is the one that uses exotic materials such as ceramic alloys that guarantee protection against cutting. A relatively broad shrouded shackle is also a guarantee against cutters.

How do you open a combination lock if you forgot the code?

It is possible to open the combination lock even without the code. There are several methods applicable to this scenario. You can try cracking the code. If the combination code is quite older, you may consider creating a shim. Lastly, if you don’t find the first two methods doable, you may consider resetting the master lock, although by doing such, you will have to find the serial number first.


Although it can be confusing to decide on the best master lock for outdoors, this list of products was made to provide you an array of choices. However, if you intend to get the best in the list, we recommend the Mul-T-Lock MT5+#13 C Series. It can provide you maximum security. Although it is quite costly compared to other models, there is no doubt that this brand is worth investing in. The second in our rank is Abloy PL 362.

These are merely your guides in choosing your master lock. The best master lock for outdoors comes down to personal requirements, although some are better than the others. It is still your assessment that you will have to follow at the end of the day. Remember, your objective in getting the best master lock for outdoors is to achieve security. Do not compromise quality with a low-cost product.

Best Long Range Rifle Scopes Review In 2020

Best Microwave Oven for Baking Review in 2020