Master Lock 142DCM Covered Aluminum Keyed Padlock, 1-Pack, B
✅ PROS
- Quality materials for lasting performance
- Great value with multiple components included
❌ CONS
- May vary based on individual needs and preferences
- Check Amazon for current pricing and availability
The Verdict
You don’t need Fort Knox for a gym locker. But you do need something that won’t seize up after one rainy season. The Master Lock 142DCM sits squarely in that middle ground — a compact, weather-resistant padlock that most buyers rate 4.7 stars across 235 reviews. Here’s the honest breakdown.
What You Actually Get
The box contains one padlock and two keys. The lock body is die-cast aluminum with a black vinyl cover — that cover isn’t cosmetic. It shields the metal from direct rain and road salt, which is the primary reason this lock outlasts bare-steel alternatives in outdoor use. The shackle is 1.5 inches tall with a 5/16-inch diameter, and the body measures roughly 1.75 inches wide. It’s a compact lock, not a beefy one.
Build Quality and Real-World Performance
The 142DCM uses Master Lock’s dual deadbolt locking mechanism — two independent locking balls engage the shackle rather than a single spring-loaded latch. That’s a meaningful step up from bargain-bin locks and explains why it resists shimming and basic prying attacks.
The covered body is the standout feature. Exposed to weather, bare steel padlocks develop rust that seizes the shackle within months. The vinyl cover on this one sheds water and protects the aluminum core. One buyer noted, “I’ve had this on my fence gate for two winters and it still opens smoothly.” That’s the experience most owners report.
The keys are standard Master Lock cut keys — nothing fancy. They work smoothly when new, though a few reviewers mention they can stick slightly if the lock goes months without use. A quick graphite lubrication solves that.
What Buyers Consistently Praise
The most repeated positives in the 235 ratings are straightforward:
- Weather resistance — “Left outside on my boat trailer for a year. No rust, works like day one.”
- Smooth operation — “Glides open and closed. The cover keeps dirt out of the keyway.”
- Good value for the price — “Cheaper than the all-steel version and lasts longer outside.”
Where It Falls Short
Let’s be direct: this is a deterrent lock, not a security lock. The aluminum body is lighter and easier to cut than hardened steel. A determined thief with bolt cutters gets through it in seconds. If you’re securing a shed with expensive tools, step up to a shrouded shackle model.
The keys are also not rekeyable. Lose both, and you’re cutting the lock off. And the blue vinyl cover, while functional, can peel if the lock sits in extreme UV for years — cosmetic damage only, but worth noting.
Who Should Buy This
- Gym and locker users — Compact size fits standard locker hasps perfectly.
- Outdoor storage owners — Sheds, gates, and fence latches exposed to weather.
- Boat and RV owners — The corrosion resistance shines in humid or salt-air environments.
- Anyone needing a light-duty “keep honest people out” lock.
Skip it if you need high security, want a rekeyable lock, or are securing anything a thief would target for resale value.
FAQ
Q: Is this lock weatherproof? A: Not fully waterproof — water can enter the keyway if submerged. But the covered body resists rain, snow, and humidity far better than uncoated steel locks. For surface-mounted outdoor use, it’s excellent.
Q: Can I get replacement keys? A: Master Lock offers a key registration service. Write down the key code stamped on the original keys and register online. Replacement keys cost a few dollars plus shipping.
Q: How does the 142DCM compare to the 140D? A: The 142DCM has the vinyl cover and aluminum body; the 140D is bare aluminum. The cover adds weather protection and a slightly better grip. Both use the same core mechanism.
The Verdict
Rating: 4.6/5 — The Master Lock 142DCM nails its intended niche: a compact, weather-resistant padlock for light-duty outdoor use. It’s not high security, and it’s not rekeyable, but it does exactly what most buyers need at a fair price.
Buy it if you need a rust-resistant lock for a gate, locker, or shed and don’t require heavy-duty protection. Skip it if you’re securing valuables against determined theft — buy a hardened steel or shrouded shackle lock instead.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.
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