The best locks for storage units aren’t stacked by the register at the hardware store, as you probably suspected, since you’re here. We’ve combed through locksmith forums, user reviews, and storage facility specs to highlight seven locks worth your money in 2026.
The 7 Best Locks for Storage Units: Quick Comparison
| 🔒 Lock | 💪 Strengths | 🎯 Best for | 💰 Price |
| ABUS Diskus 24/70 | Bolt-cutter resistant, stainless steel | Most storage units, indoor or outdoor | ~$28 |
| ABUS Granit 37/60 | Hardened steel, closed shackle, weatherproof | Long-term outdoor storage | ~$100 |
| Brinks 673-70001 | Stainless steel, easy on the wallet | Budget (disc lock) | <$15 |
| Master Lock 6271 Cylinder Lock | Fits built-in storage latches | Public Storage and Extra Space units | ~$30–50 |
| Mul-T-Lock Hockey Puck | Shutter-style shackle, drill-resistant core | Bolt-cutter protection | ~$180 |
| Master Lock M40XKAD Magnum | Shrouded shackle, hardware-store price | Budget (shrouded padlock) | ~$27 |
| Master Lock M930X Magnum | Tough Cut shackle, solid steel, rekeyable | Traditional padlock upgrade | ~$41 |
How We Picked These Locks
We dove in, researching customer reviews, locksmith threads on Reddit, and the lock requirements at major storage facilities.
Here’s what matters when someone’s trying to get into your unit:
- Cut resistance: How well the shackle holds up against bolt cutters, a common tool for break-ins.
- Pick and drill resistance: Cheaper locks open in under a minute with a pick gun, while higher-quality locks take longer and make more noise.
- Weather durability: Outdoor units sit in rain, snow, and humidity for years. A rusty lock is a stuck lock.
- Facility compatibility: Some facilities require disc locks, while others need cylinder locks that fit a specific latch, so make sure to check.
- Value: If you’re stashing $500 worth of stuff, a $200 lock doesn’t make sense. You’re better off with something solid in the $25 to $60 range.
A quick word on what didn’t make the list of locks: Bluetooth and smart locks were out. The convenience is nice, but they can be hacked, and most facilities don’t recommend them.
Combination locks didn’t make it, either. A determined thief with a YouTube tutorial can open most of them, and a lot of storage facilities won’t accept them as primary locks, anyway.
Overall, locks are deterrents rather than guarantees. So, make sure you have a full picture of the security setup: Are there cameras? If it’s a storage facility rather than a neighborhood garage, how is access logged? And, of course: What type of lock does that door need? We help unpack that last question below.
1. ABUS Diskus 24/70: Best Disc Lock for Most Units
What it is: A circular padlock with a recessed shackle, so it’s nearly impossible to grab with bolt cutters.
Best for: Most renters, indoor or outdoor, who want strong security without spending three figures.
A lot of locksmiths point to the ABUS Diskus for storage units. Because the recessed shackle leaves nothing for bolt cutters to grip, a thief has to attack the lock’s body, which takes time, tools, and noise.
ABUS makes it from stainless steel, so it won’t rust out after a couple of winters.
Key Features
- Recessed shackle: Only a sliver of shackle is exposed, not enough for bolt cutters to close around.
- Stainless steel body: It holds up outdoors without rusting or pitting.
- Key-retaining mechanism: You can’t remove the key until you lock up again, so you won’t accidentally drive home with the unit’s door wide open.
Pros
✅ Built for storage units, not adapted from a general-purpose padlock
✅ Bolt-cutter resistance
✅ Survives rain, snow, and humidity
Cons
❌ Replacement keys ship from Germany, so losing both keys is a real headache.
❌ The 24/70 is the smaller version. It fits most door hasps, but measure first.
What Users Say
“The lock fits a storage unit slide perfectly and without issue.” – Jon, Amazon
Pricing
Around $28 for the 70-millimeter version, which is the standard recommendation for most traditional storage units.
Bottom Line
If there’s one lock that does the job for most people, this is it. Just be sure to measure your door’s hasp first, and get a spare key cut when it arrives.
2. ABUS Granit 37/60: Best for Long-Term Outdoor Storage
What it is: A heavy-duty, hardened steel padlock that has a closed shackle with an integral guard. It’s built to fend off bolt cutters, drills, saws, and decades of weather.
Best for: Renters storing valuables outdoors for the long haul.
The Granit 37/60 is the smaller, more budget-friendly cousin of the 37/80, which is a locksmith favorite for high-risk situations. These locks have the same hardened steel construction, same corrosion coating, same Level 10 security rating, and same pick-resistant cylinder. The differences are size and price.
Key Features
- Closed shackle design: The 11-mm hardened alloy steel shackle is shrouded by the body, so there’s barely anything exposed for bolt cutters to grip.
- ABUS Plus disc cylinder: It’s highly resistant to picks and drills, making it much harder to crack than standard pin tumbler locks.
- Granit corrosion coating: The makers rate this lock for 40 years of outdoor protection and say it survives freeze and impact testing down to -40°F.
- 6-ton pull resistance: Nobody’s pulling this lock off with leverage tools.
Pros
✅ It offers top-tier security at a more accessible price than the 37/80.
✅ The 11-mm shackle fits more hasps than the chunkier 37/80.
✅ It’s built to survive years of outdoor exposure without seizing or rusting.
Cons
❌ Still expensive, at around $100
❌ Heavier than most consumer padlocks
❌ Harder to find in big-box stores, but available online
What Users Say
“Most locks are incredibly easy to cut, or pick. This particular model, the 37/60 is bigger than what it looks in the image.” – nparet, eBay
Pricing
Around $100 at specialty lock retailers and online marketplaces.
Bottom Line
It’s pricey. But if you’re leaving valuables in an outdoor unit through multiple winters, you probably won’t regret the cost. Skip it if your unit’s indoors or holds replaceable items.
3. Brinks 673-70001 Commercial Discus Padlock: Best Budget Disc Lock
What it is: A 70-mm stainless steel disc padlock that’s roughly half the price of the ABUS Diskus.
Best for: Indoor units, short-term renters, or anyone who wants disc-lock protection without spending $40 or more.
This is the lock to grab if you’re storing for a few months while you figure out a move and don’t want to overspend. Brinks rates the stainless steel shackle on this lock at 8,100 lbs of cut resistance, which is a strong number at this price.
Pros
✅ The shape gives you most of the bolt-cutter protection of pricier options.
✅ The all-stainless construction holds up better outdoors than chrome-plated steel counterparts.
✅ There’s a lifetime warranty from Brinks.
Cons
❌ The 4-pin cylinder is easy for skilled pickers.
❌ Multipacks come keyed alike, so order single locks if you want separate keys.
❌ Some customers report stiffening and jamming, making it hard to use.
What Users Say
“They are weather resistant which makes them a great option for outdoor storage units.” – Mike W, Home Depot
Pricing
Under $15 at Home Depot.
Bottom Line
For some bolt-cutter resistance and weather durability on a budget, it’s hard to beat at this price.
4. Master Lock 6271 Cylinder Lock: Best for Public Storage and Extra Space Units
What it is: A barrel-shaped lock that slides into a recessed slot built into the storage unit door. No exposed shackle for tools to grab.
Best for: Renters at facilities that require cylinder locks, which includes most Public Storage units and many Extra Space units.
The Master Lock 6271 drops right into a door’s latch. Because the whole locking mechanism sits inside the door, there’s nothing to attack from the outside, besides a small keyhole.
Key Features
- Integrated cylinder design: No exposed shackle, so no obvious attack point.
- Fits standard storage latches: Many doors at top storage facilities are built for this type of lock.
- Anti-drill pins: These are designed for high resistance.
Pros
✅ Almost nothing for bolt cutters or pry tools to grip
✅ Required by many facilities
✅ Reasonably priced for the security it offers
Cons
❌ It only works on doors with cylinder-lock latches.
❌ If the cylinder gets damaged, facility staff may have to drill it out.
❌ It’s harder to find in stores than padlocks, so plan ahead.
What Users Say
“Withstood someone beating it repeatedly with a hammer. The hidden shackle prevented them from cutting it.” – R Young, Amazon
Pricing
Around $30–50 at most facility offices and online marketplaces.
Bottom Line
If your storage unit has a cylinder latch, this is the lock for you. Some facilities offer these locks when you move in.
Public Storage and Extra Space are two of Neighbor’s facility partners, and we have thousands. On Neighbor, you can compare big-name storage units with neighborhood spaces, like garages and sheds, in a single search, so there’s more selection in your area.
5. Mul-T-Lock Hockey Puck: Best Protection Against Bolt Cutters
What it is: A round padlock with a shutter-style shackle that sits inside the lock’s body, completely hidden from cutting tools.
Best for: Renters storing valuables, or anyone in an area where bolt cutters are a concern.
The Hockey Puck looks like its namesake: it’s compact, dense, and built to take a hit. Locksmiths sometimes use this as the benchmark for a lock that defeats bolt cutters.
Key Features
- Shutter-style shackle: Nothing exposed to cut when the lock is closed
- Mul-T-Lock cylinder: Strong resistance to picking and drilling
- Hardened steel construction: Won’t dent or pry open easily
Pros
✅ Effectively immune to bolt cutters
✅ Excellent cylinder quality for the price
✅ Looks serious enough to fend off casual opportunists
Cons
❌ It’s pricey, and the shape doesn’t fit every hasp.
❌ It’s still vulnerable to attacks if someone has time and a drill.
❌ The patented design makes replacement keys harder to get.
What Users Say
“Because of where it is located and how I have it oriented, you are unable to get any sort of picking tools into the keyway.” – Dave, Amazon
Pricing
Around $180 on the maker’s website.
Bottom Line
If you’re storing valuables and break-ins are a concern, this is a strong choice. But double-check your hasp size before ordering.
6. Master Lock M40XKAD Magnum Shrouded Padlock: Best Shrouded Padlock for Most Budgets
What it is: A heavy-duty padlock with a highly shrouded shackle designed to block bolt cutters.
Best for: Renters who want shroud-style protection at hardware store pricing and availability.
With a hardened boron shackle and a hefty body, this isn’t an entry-level padlock. It’s not as pick-proof as the premium options on this list, but for under $30, the value is hard to argue with.
Key Features
- Shrouded Tough Cut shackle: The steel body wraps around the shackle to limit bolt cutter access.
- Boron alloy shackle: It’s harder than standard steel.
- Two keys included: There’s no trip to the locksmith, at least right away.
Pros
✅ Lower pricing for shrouded protection
✅ Covered keyway keeps dirt and moisture out of the cylinder
✅ Widely stocked in big box stores
Cons
❌ Master Lock’s “keyed alike” option can mean strangers share your key, so go for “keyed different.”
❌ The 4-pin cylinder is vulnerable to skilled pickers.
❌ It’s not the right choice for storing real valuables long term.
What Users Say
“Heavy duty padlock with a covered shroud. Won’t have to worry about snow and dirt.” — ROBIAN, Home Depot
Pricing
Around $27 at big box stores and online marketplaces.
Bottom Line
If you’re in the market for a shrouded padlock for under $30, this is the one. But the weak points mean you should look elsewhere if you’re storing real valuables.
7. Master Lock M930X Magnum Padlock: Best Traditional Padlock Upgrade
What it is: A heavy-duty traditional padlock with a Tough Cut hardened shackle and solid steel body.
Best for: Renters who want a familiar padlock shape with impressive upgrades. The body is solid, not laminated, like cheaper Master Locks, and the cylinder is removable, so you can swap it out if you lose your keys or want fresh security.
Key Features
- Tough Cut shackle: Resists cutting attempts better than standard hardened steel
- Solid steel body: Won’t peel apart under attack
- Removable cylinder: Rekey it yourself, no locksmith needed
Pros
✅ Significant upgrade from basic Master Lock padlocks at a reasonable price
✅ Solid construction is heavier and tougher than budget locks
✅ Easy to find at Home Depot, Lowe’s and most hardware stores
Cons
❌ The shackle is exposed, so it’s still theoretically vulnerable to bolt cutters.
❌ The keys can be prone to bending, so replace them when there’s any wear.
❌ The removable cylinder makes it less secure, some users report.
What Users Say
“This lock withstood the magnificent force of a bolt cutter and kept my materials safe.” – ConstructionGrad, Home Depot
Pricing
Around $41 at big box stores and online marketplaces.
Bottom Line
This is a solid option if you want a traditional padlock that does the job. But a disc or cylinder lock will win on bolt-cutter resistance.
Which Storage Unit Lock Should You Choose?
There’s no single standout, but there are plenty of strong choices for your setup, depending on the door you’re working with and what you’re storing where.
Choose a disc lock (ABUS Diskus 24/70 or Brinks) if you:
- Have a standard hasp on your storage unit door
- Want the best balance of security, price, and availability
Choose a cylinder lock (Master Lock 6271) if you:
- Rent from Public Storage, Extra Space or another facility with built-in cylinder latches
- Want high bolt-cutter resistance
Choose a shrouded or puck lock (Master Lock M40XKAD or Mul-T-Lock) if you:
- Are storing valuables, including equipment or vehicles, in a higher-risk area
- What a strong deterrent that doesn’t break the bank
Storage Units With More Options
A good lock is easy to find, once you know what you’re looking for. But finding the right storage space at a price that doesn’t hurt is what usually takes too long.
Neighbor combines traditional units and neighborhood spaces into one search, so you’re comparing every available storage space at once, instead of opening 12 tabs. Renters tell us the same things: the options on Neighbor are cheaper and closer.
- Save up to 50%, compared to traditional storage: A host renting out their garage doesn’t have the overhead of a national chain, so the same amount of space costs you less and is often easier to reach.
- See what’s really available: We list hundreds of thousands of rentable spaces, with a rating of 4.9 stars from 688,000+ reviews.
- Get up to $50,000 in renter protection: Every booking is covered, and hosts get protected up to $1 million.
Whether you’re making a move, looking for somewhere to park, or hoping to rent out that unused shed, we’ll lend a hand. Get started online, or call us to talk it through.
Frequently Asked Questions
What’s the best lock for a storage unit?
The best lock for a storage unit depends on what kind of door you’re dealing with, whether the unit is outdoors, and how much makes sense to spend. If it fits your door’s hasp, a disc lock made of hardened or stainless steel is a reliable choice because the recessed shackle leaves almost nothing for bolt cutters to grab onto.
What size lock do I need for a storage unit?
A disc lock with a 70-mm body and a 3/8-inch (about 10-mm) shackle fits many standard door hasps, but units at storage facilities often need cylinder locks. These only work with doors made to hold them. Make sure to measure your hasp, and check with the facility or host if you’re not sure.
Are disc locks better than padlocks for storage units?
The main difference between disc locks and padlocks is the shackle. A padlock’s shackle is often more exposed, so it’s easier to cut. A disc lock is usually a better choice because cutting one takes an angle grinder, which is loud and slow.
What’s the safest way to store valuables?
The safest way to store valuables is to pair a disc or cylinder lock with cameras, gated access, and strong insurance.
