The 12 Best Locks For Storage Unit In 2020 Reviews

You can travel with ease knowing your valuables are protected by using the best locks for storage unit. With different designs in most stores, you can choose one that has your ideal features. For instance, some are compact suitable for locking school or gym lockers. Others are made from hardened and wear-resistant material that prevents prying, drilling, and sawing. If you don’t have time or patience to research the vast models, we are here for you. In this review, we look at the best lock for storage unit in the market.

The Top 12 Best Locks For Storage Unit

Last update on 2020-06-03 at 08:44 / Affiliate links / Images from Amazon Product Advertising API

#12. Core Removable Lock & Key Set

Alera ALEVA501111 Core Removable Lock and Key Set

  • By: Alera

Keep valuable contents secure with this Alera lock. It has a stylish silver finish for added appeal and also rust-resistance. You can replace the standard locks with this one that has a keyed-alike lock design. Not only that, but also the steel body is strong and wear-resistance for you to enjoy maximum durability. It will not rust, peel or crack like the rest for added value. What’s more, this item weighs 4.6 ounces with a one-inch width to promote a simple installation.

In addition, the compact structure makes it easy to use, even for the little ones. They can lock lockers and other storage units easily without assistance. If you have a friend, colleague, or loved one who needs to keep valuables safe, this is the best gift. It is stylish and weatherproof, making it ideal for outside and inside locations.

  • Silver finish
  • Easy to use
  • Lightweight
  • Keeps valuables safe
  • Rustproof
  • The locking mechanism could be better


The Alera removable lock has a silver surface for added beauty as well as functionality. It comes with a key set for you to enjoy maximum safety, even if one piece gets lost. Not only that but also it weighs 4.6 ounces to promote easy installation.

#11. Stainless Steel Rust Preventative Lock

ZARKER J45S] Rust Preventative Lock

  • By: Zarker

Another best lock for storage unit is by Zarker with an excellent rust-resistance. Its body is made from zinc and stainless steel to ensure there are no corrosion issues. What’s more, these metals have amazing strength to withstand excessive use. You can lock your preferred item confidently, not worrying about cutting, prying, or sawing. In addition, this device’s latch is weatherproof, making it ideal for outdoor locations. The 7-pin cylinder is designed from brass to deliver maximum protection against theft. Plus, a high precision key adds resistance against picking.

We love the advanced locking mechanism of this product that gives you over 10,000 combinations. You can set the code that’s easy for you to remember and hard for the rest to guess. Furthermore, this device comes with three keys, which are keyed-alike for added user convenience. You can now lock your warehouse, container storage, vehicle outside, and more units safely.

  • Rust-resistance
  • Durable materials
  • Weatherproof design
  • 7-pin cylinder
  • Over 10,000 combinations
  • A bit pricey


The Zarker lock is rust-resistance thanks to its stainless steel and zinc body construction. They work together to provide maximum strength as well as durability. Plus, a 7-pin cylinder enhances safety against cutting, prying, picking, or sawing.

#10. 5-Dial Combination Padlock

5-Dial Combination Padlock


The WANLIAN padlock has a unique code combination that uses words instead of digits. This makes it more advanced than the rest to help keep your utilities safe at all times. Also, if you have a hard time memorizing digital codes, this is easier to use. Its multi-use structure lets you lock different objects such as gym locker, toolbox, and much more. Featuring a hardened quenched steel body, this unit has a better lifespan than the rest. It safeguards from sawing, smashing, corrosion, and also freezing for you to enjoy a secure application.

Additionally, you can select one of the 100,000 letters to comes up with a personalized combination. The code is re-settable for you to change it as frequently as you want. Note that each dial contains 10 letters and 5 dials for added safety. We take note of the cast metal body with a heavy-duty locking system and steel lock rings. Not only that but also the black finish improves discretion to minimize visibility, especially for intruders.

  • Word combinations
  • Multi-use
  • Hardened steel body
  • Over 100, 000 letters
  • Steel lock rings
  • The locking mechanism feels cheap


The WANLIAN padlock stands out from the rest, thanks to its word code system. You can input your favorite cat, book or name as the password. Also, the hardened quenched steel body has a better lifespan to safeguard against sawing, smashing, corrosion, and even freezing.

#9. Granit Alloy Steel Padlock Keyed

ABUS 37:80 Granit Alloy Steel Padlock Keyed Different Padlock

  • By: ABUS

If you want the top lock for storage unit with a compact shape, you’ve found it. The ABUS padlock shackle measures 13/16″ for the horizontal clearance and vertical clearance is 13/16″. Not only that, but also its 9/16″ diameter fist most storage units for added safety. Made from hardened steel, the bottom plate is rust-resistant and wear-resistant. It provides you with extra security against physical attacks such as prying, sawing, cutting, and tampering.

Besides, this item’s 25,000lb of tensile strength makes it among the strongest in the market. You can lock your valuables such as lockers, sheds, and much more with confidence. Also, the core-hardened body measures 60mm to fit most small-medium sized components. This device uses the key-retaining mechanism to provide maximum security. The cylinder is inserted from the top for excellent drill and pull resistance

  • Compact
  • Hardened steel plate
  • Pry-resistance
  • Key-retaining
  • Simple use
  • Small hasp


The ABUS padlock is a compact lock with a 13/16″ horizontal shackle clearance. Its hardened steel plate is wear and rust-resistance for added safely. Also, it provides better durability than other units thanks to its 25,000lb tensile strength.

#8. Security Lock For Storage

FJM Security SPSA80-KA 3-1:8

  • By: FJM Security

Another best lock for storage unit is by FJM Security suitable for marine environments. It is made from durable steel and triple chrome coating for maximum strength. Also, it has excellent rust-resistance and wear-resistance to withstand bad weather conditions. This padlock has a heel-toe locking mechanism with a rotating steel shackle. It makes sure no weak spots are left hence, prevent against sawing and cutting.

Furthermore, this accessory’s D shape design and chrome exterior add more safety. Whether you use it for outside locations or in wet areas, the structure remains sturdy. Now, you have no excuse about not leaving your valuables secure. Use it for securing storage units, lockers, containers, gates, shed, barns, and much more. Not that this padlock has four keys with a unique European style. They use the key retaining mechanism to prevent leaving it unlocked.

  • For marine environments
  • Durable steel
  • Rotating steel shackle
  • 4 European-style keys
  • Key-retaining
  • A bit small


Some locks in the market tend to rust or break when exposed to wet conditions. This one by the FJM Security is well-made suitable for marine environments. Also, its heel-toe locking mechanism does not leave any weak spots for added safety.

#7. Magnum Solid Steel Lock

Master Lock M530XQLH Magnum Solid Steel

  • By: Master Lock

We understand when keeping your valuables safe, you need a reliable lock. This one is perfect for most outdoor and indoor locations thanks to its octagonal boron-carbide shackle. Not only that but also, the use of solid steel increases strength and durability. You can lock different-sized storage units such as shed lock, locker, gate lock, and much more. What’s more, the tough-cut design of the shackle is harder than most hardened steel to prevent from cutting, prying, or picking.

Boasting a lovely finish, you can lock your utilities in style. The surface looks great and does not get affected by bad weather, such as rain. What’s more, this device has a protective bumper that delivers excellent scratch resistance. You don’t have to worry about damages like stains, even in extended applications. Plus, its 1.75-inch wide-body and 9/32 inch shackle diameter improve flexibility.

  • Reliable and safe
  • Strong construction
  • Tough-cut design
  • Pry-resistance
  • Easy to use
  • Two keys


This lock is made from magnum solid steel for maximum strength and reliability. Its boron-carbide shackle is pry-resistance and pick-resistance for added safety. Also, you can lock a shed lock, locker, or gate lock with ultimate ease.

#6. Outdoor Weatherproof 4 Combination Padlock

Padlock 4 Combination - Outdoor Weatherproof Combination Padlock

  • By: The Chestnut

The Chestnut padlock is the best lock for storage unit that gives you a wide application. You can use it for a gym, work, or school lockers, storage units, cabinets, luggage, pool boxes, toolboxes, and even gun case. Besides, it measures 3.1 inches long x 1.69 inches wide x 0.7 inches tall to fit a variety of items. The shackle’s diameter is 0.24 inches to withstand excessive use for better service delivery. Note that the combination is re-settable for added user convenience.

If you are worried about rusting issues, the body is made from quality material. It combines zinc alloy and chrome steel plating to offer high weatherproof service ideal for indoors and outdoors. In addition, the small size of this device fits through most holes of the suitcase zipper perfectly. This comes in handy when passing through an airport checkout.

  • Wide application
  • Re-settable combination
  • Premium chrome steel coating
  • Weatherproof
  • Easy to use
  • Complaints about rusting when exposed to light showers


This padlock is easy to use and has a multipurpose design. It is perfect for locking sheds, toolboxes, gun cases, hasps, cabinets, and more items. What’s more, the zinc alloy body with chrome-plated steel construction offers high anti-corrosive elements.

#5. Weather Proof Anti Theft Loud Lock

Crystal Vision SHPLA Weather Proof Anti Theft Loud

  • By: Crystal Vision Technology

The outstanding feature of this padlock is its loud alarm system for added safety. In case of cable clipping, disassembly, vibration, and breakage, it automatically produces up to 130 decibels of sound. This makes it more advanced than the rest to alert you when there are any prying or cutting activities. Moreover, this item is forged with stainless steel for rust-resistance and durability. Its locking pin with a 10mm size improves the safety of all your valuables.

We take note of the all weatherproof design of this accessory. You can use it outdoors or indoors between temperatures of -14 up to 140 °F. not only that, but also it has a cr2 battery that can last up to one year. This device is versatile to allow locking of roll-up gate, scissor gate, storage unit, shed, barn, garage, moving truck, and even a toolbox.

  • Loud alarm system
  • Longlasting battery
  • Simple to use
  • Wide application
  • Corrosion-resistant
  • The sensor is too sensitive


This padlock has a 130 decibels sound to produce loud noise in case of vibration or cable clipping. Its body is built from stainless steel for high rust-resistance and durability. Plus, the included cr2 battery lasts for an extended time up to one year.

#4. Titanium Series Stainless Steel Lock

Master Lock Padlock, Titanium Series Stainless Steel Lock

  • By: Master Lock

This lock is made in China for you to enjoy secure handling and installation. Featuring a stainless steel body, it provides maximum reliability and strength. Not only that, but also the metal is rust-resistance for added security. This unit’s shrouded design comes in handy to minimize shackle exposure. Now you can lock both indoor and outdoor storage with added confidence. Also, the shackle is hardened for better wear-resistance, cut-resistance, and even saw-resistance.

In addition, this accessory has a unique key-retaining feature for added safety. It makes sure you don’t leave it unlocked, especially if in a hurry. What’s more, the sliding key-way cover has fantastic weather-tough elements. It keeps out grime and dirt to prevent jamming of the locking mechanism. Also, its 59mm width can accommodate different-sized objects perfectly.

  • Easy installation
  • Stainless steel body
  • Corrosion-resistance
  • Key-retaining feature
  • Quality key-way cover
  • The locking mechanism could be better


You can use the Mater Lock to enjoy easy handling and installation. The stainless steel body provides maximum strength for better reliability than the rest. Also, its key-retaining features make sure you don’t leave this accessory unlocked.

#3. Combination Portable Lock Box

Master Lock 5400D Set Your Own Combination Portable Lock Box

  • By: Master Lock

When you are looking for the best lock for storage unit, you won’t fail to see one with a Mater Lock logo. This one has a large capacity to help secure storage up to 5 standard house keys with 2 inches width. Also, the shackle fits most tulip, biscuit, and ball door knob styles. With a 4-digit dial, you can set the combination that’s easy to remember up to thousands of personalized code options. This padlock has a metal body with a vinyl shackle coating to prevent scratching.

The shutter door comes in handy to protect the codes from bad weather ideal for outdoor and indoor use. Measuring 4 inches tall x 3.25 inches wide x 4.4com in diameter, the exterior size has the perfect fit. Note that the interior dimensions resemble an L shape for added safety. This unit boasts of a black surface that improves a discreet use to protect against burglaries.

  • Large capacity
  • 4-digit dial
  • Thousands of combinations
  • Metal body
  • Vinyl coating
  • A bit tricky to push back when closing


Master Lock has a large capacity that helps secure storage up to 5 standard house keys. Not only that, but also the shackle fits most tulip, biscuit, and ball door knob styles. The shutter door protects the code surface from lousy weather.

#2. Stainless Steel Discus Padlock

Master Lock 40DPF Stainless Steel Discus Padlock, 1 Pack

  • By: Master Lock

Another best lock for storage unit we have is by Master Lock manufacturer suitable for outdoor and indoor applications. It is made from hardened stainless steel shackle that improves strength for better security. Not only that, but also the material will not corrode like the others for added value. Now you can lock your trailer, shed, garage, and more valuables with confidence.

Moreover, this gadget comes with only two keys for you to use one as a replacement. What’s more, you can give the extra piece to a loved one in case of travel. We take note of the wide lock body that fits different-sized units perfectly. No need to fiddle around with the key, thanks to its simple and secure mechanism. Plus, the 4-pin cylinder with a dual-locking lever provides an excellent pick and pry resistance.

  • Outdoor/indoor
  • Strong shackle
  • Pry-resistant
  • Quality material
  • Maximum security
  • Two keys


This discus padlock is perfect for outdoor and indoor applications. Made from hardened material, it has better strength for maximum security. Also, the included two keys ensure you have an instant replacement in case of misplacement. This item’s dual-locking lever guarantees an excellent pry resistance.

#1. Stainless Steel 4 Digit Combination Lock

Stainless Steel Discus Padlock 4 Digit (3inch) Combination Lock

  • By: Sanxi

The Sanxi is a durable and stylish lock made from stainless steel. It will not stain, rust, or fade when exposed in damp conditions. Besides, the lock body is 2.75-inch wide, the shackle diameter is 0.375-inch, and its length is 0.75 inches. This makes it suitable for locking different objects without leaving too much space. What’s more, the heavy design minimizes shackle exposure and, at the same time, protects against bolt sawing and cutting.

In addition, this unit’s hardened shackle increases strength as well as safety. It has impressive anti-freeze and anti-wear elements for added protection. Also, setting the 4-digit dial is super easy for you to operate and remember. There’s no need to carry a key every time you lock and unlock this item. Plus, the overall structure can withstand unfavorable outdoor conditions as you close a storage locker, shed, barn, or warehouse.

  • Rust-resistance
  • Hardened design
  • Easy to use
  • For outdoors/indoors
  • Key-less
  • The locking gap doesn’t fit other thick storage units


This lock is made from stainless steel for added durability and rust-resistance. Its hardened body helps minimize shackle exposure while protecting against bolt sawing and cutting. Also, you can use it to lock a storage locker, shed, barn, or warehouse.

Top Features For The Best Lock For Storage Unit

What comes to mind when you see a lock or padlock? If security is your first thought, then this guide will help you pick the best lock for storage unit. Not only to keep your valuables safe but also to let you travel with ease.


What type of material is used to construct the lock? Most models are made from hardened metal such as stainless steel, zinc alloy, and much more. They provide maximum strength to keep utilities safe for an extended period. Also, the body is strong to withstand any cases of prying, cutting, drilling, and even sawing.

Size of the Hasp

If you know you have large components that need added security, check the hasp size. Some are quite small, making them ideal for a gym, work, or school lockers, storage units, cabinets, luggage, pool boxes, toolboxes, and even gun case. Others are larger suitable for securing goods inside your shed, barn, storage container, warehouse, and much more.

Combination Mechanism

The newer models of the best lock for storage unit have multiple codes for you to set a personalized password. You can enter a 4-digit, 5-digit, 7-digit, and more styles depending on the construction. Others even have an upgraded locking system that uses letters instead of the typical number codes. This lets you memorize the combination better, especially if you find using number patterns a bit difficult.

To Conclude

Keep your utilities safe when you are away with the best locks for storage unit. It comes in handy for people who love to travel or store valuables in distant locations. Not only that, but also you can use it to lock smaller items in school, home, or at the worksite. For instance, some padlocks are compact but robust ideal for school, gym, and work lockers. Others are quite weighted made from hardened material to prevent cutting, prying, and sawing. Always check the substance of the best lock for storage unit before purchase to know if you can use it in outdoor and marine environments.

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