Combination Padlocks

6 Best Heavy-Duty Combination Padlock Review & Comparison in 2023

While combination padlocks may be old, they are still the best option to secure your bike, gate, and garden shed. But not all padlocks are the same; some are easy to pick while others are not.

    It’s hard to decide which heavy-duty combination lock is best because so many options are available. To ensure the safety and security of your possessions and property, we’ve compiled a list of the top heavy-duty combination padlocks currently available.

    There is a wide range of applications for these locks, tough and hard to break. Although some models are more expensive than others, they all provide excellent value.


Best Pick

Master Lock M175XDLF Heavy Duty Combination Lock

  • Finish Type: Polished
  • Material: Alloy steel, Brass
  • Color: Brass Finish
  • Warranty: 1 year electronics warranty

Budget Pick

71znhgrvn2L. AC SL1500

Master Lock 141D Covered Aluminum Keyed Padlock

  • Finish Type: Polished
  • Material: Aluminum
  • Color: Black
  • Warranty: 8 month manufacturer

Editor Pick

ULTRALOQ Smart Lock U-Bolt Pro – Waterproof

ABUS 20/70 Diskus Stainless Steel Padlock

  • Finish Type: Polished
  • Material: Stainless steel
  • Color: Stainless steel
  • Warranty: 18 months electronic and lifetime mechanical

List of Heavy Duty Combination padlock

  1. Master Lock M175XDLF Heavy Duty Combination Lock Best Overall
  2. Master Lock 141D Covered Aluminum Keyed Padlock Best By Budget
  3. ABUS 20/70 Diskus Stainless steel Padlock Best By Editor Pick
  4. Master Lock 140D Padlock Best for Gym and Gate
  5. ABUS 37/80 Granit Padlock Best for Money Locker
  6. Master Lock 40D Stainless steel Diskus Padlock Best for Door

Reasons to Buy

  • Extremely durable
  • Recommended for outdoors
  • Easy to setup
  • Versatile and resettable
  • Good for price

Reasons to Avoid

  • Storage rooms and sheds do not fit perfectly

Product Description:

   Master Lock M175XDLF Heavy Duty Combination padlock has an extended shackle that benefits various applications. The padlock body is zinc and can withstand extreme force. The best thing is that it is a weatherproof padlock, so rain, snow, and dust do not affect it. The shackle is made of boron carbide, which is 50% stronger than steel shackles. Also, it is pry-resistant.


  • One directional dial feature
  • Tough-cut octagonal boron-carbide shackle
  • Shackle seal for weather protection
  • Roller pin cylinder lock
  • Stronger than hardened steel

Company review:

   A US company, master lock manufactures padlocks, safes, bike locks, combination padlocks, and other security accessories. It offers first-rate locks that secure your properties from unauthorized access. Its purpose is to make durable locks that can withstand any bumper or force. It is the world’s best lock brand that does not have any bad reviews.

About the product:

This Master Lock M175XDLF Heavy Duty keypad lock offers a wide range of features that make it a lockmaster. This ultra-solid and compact Master Lock Combination padlock is affordable and high security, and can be used indoors or outdoors.

      This feature is best suited for sheds and garages, although moving trucks, self-storage trucks, and trailers have also been designed with it in mind. It provides greater security than hardened steel due to its 50 percent stronger construction.

      Despite its small size and zinc body, it’s scratch-resistant; the shackle seal is weather-resistant, and the dial cover folds off when not in use, so that weather and rust are prevented from damaging the font. As a result, the digit combination is always visible.  

     The steel shackle is thick and solid. Intruders won’t dare break your master lock. If you’re in a hurry or it is dark, you can use the 4-digit combination one way. A roller pin locking mechanism is included to make picking the lock more difficult.

     Customers have complained that the lock combination is tricky to figure out. In some cases, the line can appear off-center – tricking you into believing the lock isn’t working – but we didn’t encounter either of these issues. Also, it offers a lifetime warranty.


MaterialAlloy steel, Brass, Zinc
ColorBrass Finish
Finish TypePolished
Special FeatureResettable
Size1-1/2 inches Shackle
Weight8 ounces

Highlight: The lock is super visible and great value for money.

Reasons to Buy

  • Easy and fast to lock/unlock
  • Great price
  • Nice look and feel
  • Includes two keys
  • Well-built and sturdy
  • Lifetime warranty

Reasons to Avoid

  • Less safe than a combination lock

Product Description:

   Master Lock 141D is a vinyl-coated aluminum lock that offers incredible security to your properties. It is a four-pin cylinder lock and is resistant to scratches. You can use it indoors and outdoors, such as the shed, fence, gate, lockers, etc. It comes with two keys and is waterproof. So, if you lose one key, you can use the other one. This heavy-duty lock is corrosion resistant too.


  • Corrosion and scratch proof
  • Extra cut resistant
  • A dual locking lever system
  • Lifetime warranty
  • ¼” diameter and 7/8” long

Company review:

   A US-based brand, master locks produces padlocks, bike locks, safes, combination padlocks, and more. The company offers top-of-the-line locks to prevent unauthorized access to your property. These locks are designed to be durable and able to withstand force and bumpers. Regarding reviews, it is the world’s best lock brand without any complaints.

About the product:

      A simple yet durable aluminum padlock from Master Lock, the 141D is easy to use. The zinc-coated aluminum body, Hardened steel, and corrosion-resistant make this model ideal for indoor use.

      Moreover, it resists rust and scratches. An expert attack-resistance lever and a 4-pin cylinder lock provide the lock’s security. The Master Lock 141D comes with two colored keys that can be used to open the same padlock. You should use this padlock to secure lockers, small boxes, and cabinets.

      This is a good practical option for most people, considering its design and performance. Based on our tests, it holds the weight securely and opens and closes the shackle the most accurately.

      There are many competitors on the market, but this one is easier and faster to use due to its simple and practical design. Master Lock backs it up with a limited lifetime warranty against rust and corrosion despite its weather resistance.

      Its reliable outdoor performance is even more impressive. Even after bad weather, you won’t have to worry about the anti-freeze and corrosion features. The lock that I have does not show any signs of rust, and it is in perfect working condition. Hence, it’s a good choice for outdoor use.


Finish TypePolished
Special featureRekeyable
Size1 Pack
Weight2.88 ounces

Highlight: This lock is very secure and affordable.

Reasons to Buy

  • Circular design reduces bolt exposure
  • For trailers, PODs, garages, etc
  • Simple to use
  • Anti-corrosion and anti-freeze
  • Smooth mechanical action

Reasons to Avoid

  • Sharp edges can cut you
  • Little pricy

Product Description:

   ABUS 20/70 Diskus stainless steel padlock is one of the strongest heavy-duty padlocks. It is a round lock and has open anti-cut plates that offer more security against theft. It has a small shackle, so it cannot be cut by any tool. The best thing is that it is made of brass, aluminum, and steel, so challenging to pry. This padlock is made in Germany and comes with two keys.


  • Protection against water and dirt
  • Key retaining
  • Highest break resistant
  • Rekeyable
  • Hardened steel protection

Company review:

   ABUS is a leading brand of security in Germany. Its main products are bikes and bicycle locks, window and door safety, heavy-duty locks, and other industrial locks. It also manufactures excellent video surveillance and alarm cameras, making them popular in the world of cameras and locks. So, this brand is an independent and strong management group of electronic services.    

About the product:

ABUS 20/70 is the best price-quality padlock offer for round and circular locks. Featuring a deep welding technology, this padlock comes from a reputable company born in Germany. In other words, it provides the best level of resistance to drilling, pulling, and cutting.

      As far as Diskus padlocks are concerned, that is. It contains an anti-cut plate and base and a disk lock cylinder mechanism. Abus’s Diskus locks are resistance-corrosion to saltwater. They are constructed from stainless steel and nickel-plated cylinders and are extremely sturdy.

     In addition, because it is circular and narrow, it’s difficult to access the shackle by bolt cutters or a saw. Your budding thief will find it difficult to get through unless he has an angle grinder on hand. This padlock has an ABUS-plus lock mechanism, which makes it one of the best on the market.

      We found that the locking body and shank are corrosion resistant, and our tests suggest that they are very hard to tamper with. It provides a full range of protection. I recommend it for coastal or marine use, but it is also a great lock for any other purpose.

      It’s a little pricy but will not disappoint you. Also, if it fails to work, you can return it to the ABUS Company for repayment. They will replace the product or repair it.


MaterialStainless steel
ColorStainless steel
Finish typePolished
Special featureResettable, Rekeyable
SizePack 1
Weight5.6 ounces

.Highlight: The strength and durability of this lock make it perfect for heavy use.

Reasons to Buy

  • Excellent quality
  • Highly durable
  • Fits gate perfectly
  • Ideal for gym
  • Pick-resistant

Reasons to Avoid

  • A little flimsy

Product Description:

   Master Lock 140D padlock is one of the most affordable locks on the list. The material of the lock is brass and has a cut-resistant hardened steel shackle. You can use it in any environment, such as rain, dust, snow, drizzling, etc. It comes with two keys and cannot be unlocked without a key. This padlock is wide enough to stop any intruder from reaching your property.


  • The solid brass lock body
  • Prevent picking
  • Include two keys
  • Withstand cutting and sawing
  • Weather-resistant

Company review:

   The master lock brand focuses on locks, combination padlocks, safes, marine locks, bike locks, and other safety items. You can trust the company’s high-quality locks to keep your property safe. Their locks are designed to be durable and able to endure force and bumpers without breaking. The reviewer’s rate of this brand is excellent.  

About the product:

The Master Lock 140D Solid Brass is the best option at an affordable price. The padlock body is built from solid brass and stainless steel. Because of the 4-pin cylinder design, cutting bolts have difficulty getting through.

      Meanwhile, the padlock’s size and shape are more practical than ever and can be used with cable locks. The pick is likable because it’s tough, lightweight has two keys, and has a slim profile.

      There’s no doubt that this is the best low-end security padlock. You can rely on its long-lasting performance, ease of use, and functionality. It is also harder to pick than it looks.

      Upon releasing the hinge, you’ll notice the lock spring pop out gently. This highly-reliable padlock comes with a heavy-duty locking mechanism that makes it the ideal choice for a low and cost-effective price.

      With this rustproof padlock, you’ll get both large and small shackles. Its brass body and reinforced bumper make it durable and reliable. This makes it suitable for outdoor use. In addition to the rigid steel shackle, the master lock has a tough-cut, octagonal boron-carbide shackle.

      Its roller pin cylinder also makes it pick- and pry-resistant. I was completely satisfied with it. However, as most locks can be cut, they can be easily cracked. However, I was able to leave my luggage with TSA without concerns about my situation. You get a limited warranty with it. In addition, it is affordable. I strongly recommend this set of locks.


Finish TypePolished
Special feature140 D Padlock
Size1 Pack
Weight1.76 ounces

Highlight: Very high quality and an extremely affordable price.

Reasons to Buy

  • Very easy to lock/unlock
  • Top-notch quality
  • High-security padlock
  • Bombproof
  • Tight clearance shackle
  • Durable

Reasons to Avoid

  • Little pricy

Product Description:

   ABUS 37/80 Granit is a rekeyable padlock made of hardened steel alloy. It has a Granit coating that makes it durable against weather and damage. It is anti-corrosion and comes with a security card to protect against duplication. It has one LED light key to see in the dark. This padlock features a disc cylinder to protect against prying. The color is black, which looks aesthetic in your place.


  • Tensile resistant
  • High-quality brass material
  • Made in Germany
  • Innovative luminous keys
  • Corrosion protection coating

Company review:

   ABUS is one of the leading security brands in Germany. The company specializes in bike locks, window and door locks, industrial locks, and heavy-duty locks. This brand is also a leading producer of cameras, such as surveillance cameras and alarm systems. It also represents an independent and strong electronic services management group.

About the product:

The ABUS 37-80 Granit Padlock is made by a well-known reputable company. ABUS locks are known for their accuracy, toughness, and functionality for high-end systems. A durable master lock padlock is the most suitable option for many people.

      It is the most secure higher security lock you are looking for, considering its price and standard. This model offers incredible strength and resistance against attacks due to its tensile resistance of more than 6 tons and durable finishing.

      It is even protected from corrosion with Granit black coating. The lock body and shank are core-hardened. It has a disc cylinder. In case of physical attacks on a door lock, the base plate is hardened, and a key-retaining feature is included.

      Despite its high-end features, one of the most impressive features about this beast is how easy it is to lock and unlock using the key. A stellar feature is that the shackle opens both sides after unlocking. Its anti-corrosion coating and security card make it suitable for outdoor applications; it includes two keys, one of which has a built-in LED light.

      Today, only a few padlocks have a shank feature, which makes the ABUS stand out. This padlock is perfect for cupboards, locks, toolboxes, shed doors, or anywhere you need a compact, durable lock that won’t rust.


MaterialAlloy steel, Aluminum, Brass
Finish TypePainted
Special featureRekeyable
Weight2.4 pounds

Highlight: This lock is difficult to bolt cutter or cutting disc.

Reasons to Buy

  • Well-made and sturdy
  • Good quality
  • Bolt cutters can’t attack this lock
  • Affordable
  • Easy to use
  • Keys turn nicely

Reasons to Avoid

  • No seams are welded between the covers.

Product Description:

   Master Lock 40D is a stainless steel Diskus padlock that has a big body, and the shackle is mostly covered in the lock body. It is made of stainless steel and safe against cutting due to the shrouded design shackle. It uses keys instead of a combination and does not get rusted even in rainy weather. Also, the pack contains one padlock and two keys.


  • Stainless steel body
  • Fully shrouded style shackle
  • Double deadbolt locking
  • Pin tumbler cylinder
  • Corrosion resist

Company review:

   A master lock brand concentrates on security products such as combination padlocks, safe locks, marine locks, bike locks, and magnetic locks. Keeping your property secure is the top priority of this company’s high-quality locks. In spite of force and bumpers, their locks are designed to last. This brand is highly rated by reviewers.

About the product:

      One of the best circular heavy-duty padlocks is the Master Lock 40D Discus Lock. Featuring a stainless steel discus body, it is best suited for outdoor use, such as loading trucks, bikes, sheds, and trailers.

      A reliable four-pin locking system protects against drills and attacks and is complemented by a dual locking lever. By the circular shape, it can withstand drills and bolt cutters better. A burglar who cuts hardened steel deadbolts is unlikely to gain access from this design’s circular design and minimally exposed bolt.

     This best padlock leaves no room for error with its compact yet strong locking body. There is a good amount of thickness to the padlock, and its shank is around 5/8-inches in diameter. A key-retaining feature is included, along with two keys and one padlock.

     In addition, this lock has a steel shank, corrosion-resistant body, and deadbolt locking system. Uhaul trailers, PODs, storage lockers, garages, and gates use the disc lock for the security it provides.

     This lock is great for storage units because it can withstand heavy use. In addition, the lock’s body is extremely sturdy and durable. An anti-cut plate and base provide extra security and a disk lock cylinder mechanism. These best padlocks come with ABUS-plus lock mechanisms.

     It has a few downsides, including the minimal manufacturing details. The shackle can be opened using a black plastic tab with a sharp edge under it. It was nearly painful to open the lock. I removed it with a diamond file.


MaterialStainless steel
Finish TypePolished
Special featureRekeyable
Size1 Pack
Weight9.6 ounces

Highlight: This lock is very sturdy, heavy, and corrosion-resistant.

Comparison of ABUS Locks and Master Locks

The comparison between ABUS Locks and Master Locks is as follows:

ABUS Locks:

  • ABUS is the world’s leading security manufacturer with a good reputation in the industry.
  • In addition to padlocks and hasps, chains and cables, key storage, and safety devices, ABUS offers a comprehensive range of security and safety products for residential and commercial applications.
  • ABUS offers security solutions that protect lives and valuables so that you can feel safe and secure.
  • Picking is a manipulative break-in attempt that is extremely difficult to prevent with ABUS plus Locking System.
  • ABUS German padlocks are made using the highest quality materials and finished to a high standard.
  • So that’s the best brand with few expensive products but high-quality locks.

Master Locks:

  • With Master Lock, you can get one of the best combination locks.
  • Featuring shim-protected latches, Master Lock padlocks prevent latches from being opened with the shim tool.
  • If you’re practicing lock picking, you should use a Master Lock because they are usually fairly easy to pick.
  • Any four standard pins in a Master lock can be easily replaced with a paper clip or bobby pin.
  • Master Locks are affordable and offer highly durable products.

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Things to consider before buying the best heavy-duty Combination Padlock

The type of heavy-duty combination lock you should use will depend on where you will use it. When choosing the best for the security of your stuff, you should consider the following:


     There are different sizes of combination locks. Buying a bulky lock is okay if you plan to use it for a safe home. A small combination padlock is the best option for outdoor people who frequently move from one place to another. So, consider the size of the lock according to your needs while purchasing it.


     Metal padlocks are prone to rust, and I don’t think you should use one. A rusted lock is difficult to read and messy. Thus, choosing a padlock made of corrosion-resistant plated steel is imperative. Select a lock made of hardened steel to make breaking it more difficult for burglars.

TSA approved

      To save time, effort, and money, you need a TSA-approved lock if you use your locks to secure your luggage while traveling. However, if you plan on using it in your locker, you won’t need this kind of lock.

Number system and style

      A combination lock can have a single dial or multiple dials. Numbering systems also vary. The passcode used in some systems is three digits, while the passcode used in the others is four digits. Instead of numbers, some padlocks employ alphanumeric or alphabetic systems.


      Are you planning to use your lock in a public place? Especially if it will be used outside, you should consider whether it will be weatherproof, as some locks may rust in severe weather or degrade.


     At the top of the lock, you will find a hoop section known as a shackle. Choosing a padlock with a mostly hidden shackle will provide the most security. Criminals can cut open a large, exposed shackle with cutters if the shackle is large and exposed. The shackle of a padlock should be barely exposed, or the shackle should be concealed in the lock’s body.

What is the most secure padlock?

      A padlock that does its job of securing your valuables is the one that is the most secure. Thus, the best padlock needs to be durable. Hardened steel that can stand up to human force and weather should be used. It should also be convenient for the user. Your passcode should be easy to set, yet it should resist shimming simultaneously.


What is a heavy-duty padlock?

      The largest and most durable padlocks are heavy-duty. The majority of them are protected, and they are usually made from steel that is hardened to resist drilling and grinding.

What is the strongest type of padlock?

      ABS Granit is one of the strongest padlocks globally, with more than six tones of tensile strength. Due to the tensile resistance, attackers can’t pull a shackle free from a solid lock forcefully.

Is a combination lock better than a key lock?

     Keyed locks are more secure than combination locks since they don’t have dials. Thieves cannot open the safe unless they have the key. In addition, keyed locks are safer than combination locks because they cannot be easily shimmed.

Are our combination locks easy to pick?

    Combination locks do not measure up to this standard. As compared to keyed locks, combination locks are more susceptible to picking. Professional thieves use several tools to pick combination locks, which only have a combination of three or four numbers.

How do you open a big lock without a key?

    A small hole should be on the face of the knob on the non-locking side of the door. A small button is tucked inside the hole, which must be pressed to unlock the door. To unlock it, you only need a stiff, straight tool. Make sure the paperclip is straightened, and use a tiny screwdriver for eyeglass repair.

Final words

We should always choose only the highest-quality heavy-duty combination padlock. With this comprehensive review, you’ll have a better understanding of the available locks on the market and the key features of the best heavy-duty combination padlock. If you make the right choice, you’ll be safe inside and outside your home. The choice is always yours.


Combining his passion for security and technology, Joseph is dedicated to providing reliable and affordable combination padlocks to help protect your valuables. With years of experience in the industry, Joseph brings his expertise to to ensure your peace of mind.

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