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Master Lock Heavy Duty Outdoor Keyed Padlock, 2-1/8-in Wide x 2-1/2-in Shackle

Name: Master Lock Heavy Duty Outdoor Keyed Padlock, 2-1/8-in Wide x 2-1/2-in Shackle
Brand: Master Lock
SKU: 3453914
Price: 26.98 USD
Availability: InStock
Rating: 4.7 (70 reviews)

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4.7

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Fri, Oct 9

43 available

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Sat, Oct 10

45 available

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The Master Lock Magnum® no. M515XKADLJ laminated padlock features a 2-1/8 In. (54 mm) wide laminated steel body for maximum strength and reliability, and is surrounded by stainless steel and zinc outer components for weather resistance. The Rust-Oleum® certified protection provides a lifetime guarantee against rusting on the lock body; and covered clock body, keyway, and shackle seals offer additional weather protection. The 3/8 In. (10 mm) diameter octagonal shackle is 2-1/2 In. (64 mm) long and made of Tough-Cut™ boron-carbide, 50% harder than hardened steel, offering maximum resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual locking ball bearings provide maximum resistance against prying and hammering. The lifetime guarantee provides peace of mind from a brand you can trust.

Magnum; choice of professionals
Rust-Oleum; certified protection guarantees lock body will not rust
Tough-Cut™ octagonal boron-carbide shackle is 50% harder than hardened steel
2.5-in (64mm) shackle clearance for more uses
Dual-armor construction: 2.13-in (54 mm) wide laminated steel core with weather-resistant cover protects against snow, rain, dirt, mud, grime and salt
Covered keyway and shackle seals for added weather protection
Dual ball bearing locking for maximum pry resistance
4-pin cylinder for increased pick resistance

General
Lock Material	Steel	Contractor Grade	Yes
Dial Count	N/A (keyed lock)	Lock Type	Keyed padlock
Combination Type	N/A (not combination)	Number of Pins	4
Package Quantity	1	Color/Finish Family	Black
Use Location	Indoor or Outdoor	Manufacturer Color/Finish	Black
Series Name	Heavy Duty Outdoor

Dimensions
Width Measurement	2-1/8-in	Shackle Diameter (Inches)	0.346
Height (Inches)	4.826	Shackle Height	2-1/2-in
Thickness (Inches)	1.3	Shackle Width (Inches)	0.951

Features
Shrouded Shackle	No	Keys Included	Yes
Adjustable	No	Rust Protection	Yes
Weatherproof	Yes

Compatibility
For Use with Luggage	No	Wi-Fi Compatibility	No
For Use with Bikes	No	App Compatibility	No
For Use with Laptops	No	Bluetooth Compatibility	No
Works with iOS	No	Smart Compatible	No
Works with Android	No

Certifications
CA Residents: Prop 65 Warning(s)	No	TSA Accepted	No

Warranty
Warranty	Lifetime

Miscellaneous
UNSPSC	46171500

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Review

4.7 out of 5

70 Reviews

87% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

This padlock is generally well-made and durable, suitable for outdoor use. Many users praised its sturdy construction and reliable performance in withstanding the elements. However, some reported issues with the lock freezing or becoming difficult to open in cold, wet weather, suggesting the weather protection features may not be as effective as advertised. While the majority of customers seem satisfied, those in very harsh climates may want to consider alternative options with more robust weather protection.

Customer review summary generated by AI, including incentivized reviews.

70 Customer Reviews

Sort By

Great buy

Great lock for my gate

JoburkSeptember 25, 2026
Verified Purchaser

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Solid Perfromance

Would Recommend

Well built. Holding up nicely in our adverse weather conditions. Shackle is strong and angled, keyway is cover and protected from the elements. A great value for the price.

Locked upSeptember 22, 2026
Verified Purchaser

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Not that secure

Would Not Recommend

I purchased this for a storage unit, & it was picked by thiefs within a week.

FrenchyAugust 10, 2026
Verified Purchaser

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Response from MasterLockCompany

We appreciate your feedback and apologize for your inconvenient experience with this product. The most important function of any locking mechanism is... Read More

MasterLockCompanyAugust 10, 2026

MasterLock

Opens and closes flawlessly. Very well constructe.

Easy to use. High quality hardened steel construction.

DavidJune 7, 2026
Verified Purchaser

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Great for wider storage latches!

Would Recommend

Well built and very hearty lock. Long enough to ensure a good fit with wider latches.

jc195April 24, 2026
Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item Master LockHeavy Duty Outdoor Keyed Padlock, 2-1/8-in Wide x 2-1/2-in Shackle
		Ratings	70
		Rust Protection
		Weatherproof
		Keys Included
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