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Master Lock Heavy Duty Shrouded Outdoor Disc lock 3-1/8-in Wide x 5/8-in Shackle

Name: Master Lock Heavy Duty Shrouded Outdoor Disc lock 3-1/8-in Wide x 5/8-in Shackle
Brand: Master Lock
SKU: 3056623
Price: 25.98 USD
Availability: InStock
Rating: 4.5 (283 reviews)

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4.5

283

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The Master Lock Magnum® M50XD discus padlock with key features a 3-1/8 in. (79 mm) wide stainless steel body for maximum strength, reliability and corrosion resistance. The fully shrouded design minimizes shackle exposure and protects against bolt cutter attacks. The 7/16 in. (11 mm) diameter octagonal shackle is 11/16 in. (17 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 covered keyway offers maximum weather protection, and reinforced body bumper protects against scratches. The lifetime guarantee provides peace of mind from a brand you know and can trust.

Magnum® - #1 padlock choice of professionals
Shrouded tough cut™ shackle protects against bolt cutter attacks
Two keys included
3-1/8 in (79 mm) wide lock body; 7/16 in (11 mm) diameter shackle with 5/8 in (17 mm) length, 1-7/32 in (31 mm) width
Outdoor lock; heavy duty discus padlock with key is best used for outdoor storage and fences, self-storage units and lockers and more
Key lock features tough cut™ octagonal boron-carbide shackle is 50% harder than hardened steel; fully shrouded design minimizes shackle exposure and protects against bolt cutter attacks
4-Pin cylinder for increased pick resistance; covered keyway for maximum weather protection

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

Dimensions
Width Measurement	3-1/8-in	Shackle Diameter (Inches)	0.4375
Height (Inches)	3.125	Shackle Height	5/8-in
Thickness (Inches)	1.04	Shackle Width (Inches)	1.22

Features
Shrouded Shackle	Yes	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

4.5 out of 5

283 Reviews

90% Recommend this product

Ratings may include incentivized customer reviews.

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What Customers Are Saying

This lock is praised for its high quality, durability, and security features. Customers highlight the lock's strength, weather resistance, and difficulty to tamper with. Many find it easy to use and a good value. While a few experienced issues with stiffness, the overall feedback is very positive, indicating this is an effective security solution.

Customer review summary generated by AI, including incentivized reviews.

283 Customer Reviews

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Works great

Would Recommend

Moved into a new storage unit and needed a new lock, this was my choice.

PeeBee1July 15, 2026
Verified Purchaser

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superior quality and materials

Would Recommend

i bought one a month ago and am so satisfied with the quality that i bought three more, for other units.

HarisJune 30, 2026
Verified Purchaser

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Heavy duty lock

Would Recommend

Easy to use, very strong. We used it for our Pod when moving.

DebCJune 22, 2026
Verified Purchaser

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Good value

Would Recommend

Sturdy

mk007June 19, 2026
Verified Purchaser

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Secure

The mechanism is well-machined and all moves smoothly.

LaurieJune 17, 2026
Verified Purchaser

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Worked well

Would Recommend

Relatively simple to use . Fit the latch of Pod shipping box. Compact

DolfanJune 12, 2026
Verified Purchaser

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It’s a lock

Would Recommend

Great product

KevinJune 10, 2026
Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item Master LockHeavy Duty Shrouded Outdoor Disc lock 3-1/8-in Wide x 5/8-in Shackle
		Ratings	283
		Keys Included
		Weatherproof
		Lock Material	Stainless steel
Master LockHeavy Duty Shrouded Outdoor Disc lock 2-3/4-in Wide x 5/8-in Shackle	Master LockHeavy Duty Shrouded Outdoor Disc lock 2-3/4-in Wide x 5/8-in Shackle 3 -Pack	Master LockHeavy Duty Outdoor Resettable Combination Padlock, 2-in Wide x 1-1/2-in Shackle	Master LockHeavy Duty Shrouded Outdoor Keyed Padlock, 2-7/8-in Wide x	Master LockPro Pack Shrouded Outdoor Disc lock 2-3/4-in Wide x 5/8-in Shackle 6 -Pack	Master LockHeavy Duty Shrouded Outdoor Resettable Combination Padlock, 2-in Wide x 1-1/16-in Shackle	Master LockHeavy Duty Shrouded Outdoor Disc lock 3-1/8-in Wide x 5/8-in Shackle 2 -Pack	Master LockProfessional Series Keyed Padlock, 2-1/8-in Wide x 3/4-in Shackle	Master LockHeavy Duty Outdoor Keyed Padlock, 2-in Wide x 1-1/2-in Shackle 2 -Pack
281	244	238	7	43	29	12	4	198


Stainless steel	Stainless steel	Brass	Zinc	Stainless steel	Zinc	Stainless steel	Steel	Steel