Name: Master Lock Stainless Steel Outdoor Keyed Padlock, 2-in Wide x 2-1/2-in Shackle ( 2 -Pack )
Brand: Master Lock
SKU: 1000237839
Price: 55.48 USD
Availability: InStock
Rating: 4.7 (87 reviews)

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The Master Lock 5SSKADLJ stainless steel padlock with key features a 2 in. (51 mm.) wide laminated stainless steel body for maximum strength, reliability, and weather resistance. The 3/8 in. (10 mm.) diameter shackle is 2-1/2 in. (64 mm.) long and made of stainless steel, offering maximum resistance to cutting, sawing, and weather. The 4-pin cylinder prevents picking and the dual locking ball bearings provide resistance against prying and hammering. The lifetime guarantee provides peace of mind from a brand you know and can trust.

Padlock with key is best used for marine recreation, saltwater applications, offshore security environments and severe uses
Key lock features a stainless-steel lock body and shackle for maximum strength and corrosion resistance
2-In (50 mm) wide lock body; 3/8-in (10 mm) diameter shackle with 2-1/2 in (64 mm) length, 15/16-in (24 mm) width; extended shackle for application flexibility
Includes four padlocks with two keys; both keys open each lock

General
Lock Material	Steel	Series Name	Stainless Steel Outdoor
Dial Count	N/A (keyed lock)	Contractor Grade	Yes
Combination Type	N/A (not combination)	Lock Type	Keyed padlock
Keying Type	Keyed alike	Number of Pins	4
Package Quantity	2	Color/Finish Family	Silver
Use Location	Indoor or Outdoor	Manufacturer Color/Finish	Silver

Dimensions
Width Measurement	2-in	Shackle Diameter (Inches)	0.375
Height (Inches)	4.348	Shackle Height	2-1/2-in
Thickness (Inches)	1.188	Shackle Width (Inches)	0.937

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	Limited lifetime

Miscellaneous
UNSPSC	46171500

Check out the Best Selling Padlocks on Lowes.com

Review

4.7 out of 5

87 Reviews

2 Star

94% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these padlocks for exceptional durability and security. Most highlight heavy-duty construction that withstands freezing temperatures, wet conditions, and demanding use like trailer and truck security without failure. Reviewers consistently report smooth operation, reliable performance over thousands of miles, and appreciate the 2.5-inch shackle fitting U-Haul systems perfectly. Many value the rust-proof design, lifetime warranty, and ability to key multiple locks alike. Customers frequently describe them as great value for the quality. A few note the shackle requires manual centering in some applications. Overall, reviewers strongly recommend these locks for their proven reliability and durability.

Customer review summary generated by AI, including incentivized reviews.

87 Customer Reviews

Sort By

Fantastic durability to the elements

Would Recommend

Fantastic locks for exterior gates or doors. Exceptional durability to the elements. The last ones I bought 2 years ago have been outside in the Southwest Florida heat and rain with zero issues. No rust. Perfect operation without having to use any lubricants to help in any way. They still operate like new. I bought two more for a friend.

MickeySeptember 24, 2026
Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/4a8ffa47-5375-5bbd-ba81-0c7615db7058

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/e181810a-8751-53ee-b810-1cac169b44fb

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Great lock for the back of a U-Haul truck

Would Recommend

Great lock for the back of a U-Haul truck

BennyInColoradoSeptember 12, 2026
From Stainless Steel Outdoor Keyed Padlock, 2-in Wide x 2-1_SLASH_2-in Shackle Verified Purchaser

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Very sturdy construction

I purchased these about a month ago and I have no regrets been working very well!

July 19, 2026
Verified Purchaser

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Masterlock

Would Not Recommend

I like the 4 pack lock with all the same key option. Very handy.

BatmedicMay 14, 2026
From Stainless Steel Outdoor Keyed Padlock, 2-in Wide x 2-1_SLASH_2-in Shackle ( 4 -Pack ) Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item Master LockStainless Steel Outdoor Keyed Padlock, 2-in Wide x 2-1/2-in Shackle ( 2 -Pack )
		Ratings	87
		Rust Protection
		Weatherproof
		Keys Included
Master LockHeavy Duty Outdoor Keyed Padlock, 2-in Wide x 1-1/2-in Shackle ( 4 -Pack )	Master LockPro Pack Outdoor Keyed Padlock, 1-3/4-in Wide x 1-1/2-in Shackle ( 6 -Pack )	BrinksContractor Keyed Alike Keyed Padlock, 1-7/8-in Wide x 2-1/2-in Shackle ( 12 -Pack )	BrinksContractor Keyed Alike Keyed Padlock, 1-7/8-in Wide x 2-1/2-in Shackle ( 24 -Pack )
124	111	12	12