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The Best Master Lock Level 10 Security of 2023 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Master Lock Level 10 Security of 2023. Check our ranking below.

2,024 Reviews Scanned

Rank No. #1

Master Lock - Four (4) High Security Pro Series Padlocks 7045NKA-4 w/BumpStop Technology

This listing is for four (4) High Security Keyed Alike Padlocks w/ 8 keys. ProSeries Padlocks are designed for Commercial/Industrial applications. Limited Life Time Warranty.
If you order two 4-packs or any multiple of this lock we will automatically key them all the same.
These locks feature the BumpStop Advanced Cylinder Technology. (for explanation see more product details below).
SPECIFICATIONS: 1-3/4in (44mm) wide heavy, hardened steel body with chrome rustproofing for high security with long life and a 1-3/16in (30mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for superior cut resistance
Solid iron shackle shroud resists harsh physical attacks. The removable cylinder can be replaced or re-pinned. 5 spool pin tumbler cylinder for added pick resistance. Dual ball bearing locking mechanism resists pulling and prying.

Rank No. #2

Master Lock Combination Lock, Heavy Duty Weatherproof Padlock, Resettable For Outdoor Use, M175XDLF, Brass Finish

Heavy duty outdoor lock; Maximum security combination lock is best used as a gate lock, shed lock, or storage lock.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.Control Method:Application
Set your own four digit combination lock for easy combination recall; No combination change tool required, Shackle seal and hinged dial cover for superior weather resistance
Padlock is constructed with a zinc body and reinforced body bumper for strength and reliability; Shackle seal and covered dials for superior weather protection; One directional dial feature for low light applications
Tough-Cut octagonal boron-carbide shackle is 50% harder than hardened steel; Roller pin cylinder provides maximum pick and pry resistance
2-1/4 inch (57 millimeter) wide lock body; 3/8 inch (10 millimeter) diameter shackle with 1-1/2 inch (38 millimeter) length, 15/16 inch (24 millimeter) width; Extended shackle for application flexibility

SaleRank No. #3

Master Lock Magnum Heavy Duty Solid Steel Padlock with Key,Silver

Indoor and outdoor padlock with key; maximum security lock with Tough-Cut octagonal boron-carbide shackle is best used as a gate lock, shed lock, and storage locker lock.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
Lock is constructed with solid steel for increased strength and security; protective bumper for scratch resistance; keyway cover for weather protection; removable cylinder provides ability to rekey your lock
Five-pin cylinder and dual ball bearing locking mechanism provides maximum pick and pry resistance; Tough-Cut octagonal boron-carbide shackle is 50% harder than hardened steel
2-1/2 in. (64 mm) wide lock body; 7/16 in. (11 mm) diameter shackle with 2 in. (51 mm) length, 15/16 in. (24 mm) width; extended shackle for application flexibility
Includes one padlock, two keys

Rank No. #4

Master Lock M15XDLF Magnum Heavy Duty Padlock with Key, 1 Pack, Laminated

Outdoor lock; Heavy duty padlock with key is best used for outdoor storage and fences, self-storage units & lockers, tools, job boxes and more
Key lock features Dual Armor construction: laminated steel lock body surrounded by stainless steel & zinc outer components and Tough-Cut octagonal boron-carbide shackle is 50% harder than hardened steel
5-Pin cylinder and dual ball bearing locking for increased pry resistance and maximum pick resistance; Reinforced body bumper for increased scratch resistance
2-1/2 in. (64 mm) wide lock body; 7/16 in. (11 mm) diameter shackle with 1-1/2 in. (38 mm) length, 1-3/16 in. (30 mm) width; Extended shackle for application flexibility
Includes one padlock with two keys

Rank No. #5

Master Lock M1XQLF Magnum Heavy Duty Outdoor Padlock with Key, 4 Pack Keyed-Alike, Silver

Outdoor lock; Heavy duty padlock with key is best used for outdoor storage and fences, self-storage units & lockers, tools, job boxes and more
Key lock features Dual Armor construction: laminated steel lock body surrounded by stainless steel & zinc outer components and Tough-Cut octagonal boron-carbide shackle is 50% harder than hardened steel
4-Pin cylinder and dual ball bearing locking for increased pick and pry resistance; Reinforced body bumper for increased scratch resistance
1-3/4 in. (44 mm) wide lock body; 5/16 in. (8 mm) diameter shackle with 1-1/2 in. (38 mm) length, 13/16 in. (21 mm) width; Extended shackle for application flexibility
Includes four padlocks with two keys; Both keys open all locks

Rank No. #6

Master Lock Padlock, Set Your Own Combination TSA Accepted Luggage Lock, 1-5/16 in. Wide, 4696D , Black

PADLOCK APPLICATION: For indoor use and travel; small lock is an enhanced security solution for travelers transporting equipment cases in the audio-visual/photo, trade show, firearm, music, and medical industries.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
TSA ACCEPTED: Luggage lock allows Transportation Security Administration screeners to inspect and relock baggage, without damaging lock
EASE OF USE: TSA lock has a resettable 4 dial combination for keyless convenience, set and reset your combination allowing thousands of personalized combination code options
DURABLE DESIGN: Padlock includes a metal body for durability and an extended reach, heavy duty steel shackle for easier fitment on equipment cases with an integrated hasp
SPECIFICATIONS: 1-5/16 in. wide lock body; 1/4 in. diameter shackle with 1-7/8 in. shackle length, 7/8 in. shackle width

SaleRank No. #7

Master Lock 6321 ProSeries Padlock, 1" x 2.1" x 4", Black

Shrouded design protects shackles from bolt cutters
Heavy steel body is capable of withstanding physical attacks
Hardened boron alloy shackle provides maximum cut-resistance
Dual ball locking mechanism resists pulling and prying
5-pin cylinder with spool pins is virtually impossible to pick

SaleRank No. #8

Master Lock, Brass, Padlock, ProSeries Set Your Own Combination Lock, 2-1/4 in. Wide, 1177D, No Size

ProSeries resettable combination locks are designed for commercial and industrial applications.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
Set your own 4 digit combination for convenience and security; 10,000 possible combinations
No reset tool required
Large ergonomic dials with exclusive blind feature permit operation with gloves, in low light or complete darkness
Shackle seal and dial dust cover protect internal components and dials for trouble free operation

Rank No. #9

Master Lock - (10) High Security Pro Series Keyed Alike Padlocks 6230NKA-10 w/ BumpStop Technology

In Stock with a delivery time of 1 to 5 days. Ten (10) High Security Locks Keyed Alike w/ 20 Keys. ProSeries Padlocks are designed for Commercial/Industrial applications. The same lock with a longer shackle is also available, search 6230NKALH. Limited Lifetime Warranty.
These locks feature the BumpStop Advanced Cylinder Technology. (for explanation see more product details below).
If you order two 10-packs or any multiple of two we will automatically key them all the same.
Dimensions: 2-1/2 (64mm) wide round solid steel body, each weighing 1.48 lbs. A 7/16 (11mm) diameter hardened boron alloy shackle with 1-1/8 (29 mm) inside height clearance.
Chrome rustproofing provides longer life. These high security, rekeyable 5-pin cylinders with spool pins are virtually impossible to pick. And a dual ball bearing locking mechanism resists pulling and prying.

SaleRank No. #10

Master Lock M50XD Magnum Heavy Duty Stainless Steel Discus Padlock with Key, Silver

Indoor and outdoor padlock with key; maximum security padlock with Tough-Cut octagonal boron-carbide shackle is best used as a storage unit lock, garage lock, shed lock, trailer lock, and moving truck lock.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit
Key lock is constructed with Tough-Cut octagonal boron-carbide shackle which is 50% harder than hardened steel; shrouded design minimizes shackle exposure and protects against bolt cutter attacks
Four-pin cylinder for maximum pick resistance; reinforced body bumper for scratch resistance
3-1/8 in. (79 mm) wide lock body; 7/16 in. (11 mm) shackle diameter with 5/8 in. (16 mm) shackle length, 1-7/32 in. (31 mm) width
Includes one padlock, two keys

Rank No. #11

Master Lock Hasp/Hidden Shackle Keyed Alike Padlocks 770-6271KA-2

This listing is for two (2) high security hasps and two (2) keyed alike hidden shackle padlocks. You will receive 4 keys with your order. This tough, shrouded lock/hasp combination is ideal for vans, trucks, gates, and vending machines. A similar listing is also available with the BumpStop Technology. Search 770-6271NKA in Amazons search window.
ATTENTION: If you order two 2-packs they will NOT necessarily be keyed the same. To ensure you get two 2-packs keyed alike, you must order the 4-pack.
These high security Pro Series padlocks feature a "Bolt Cutter Tough", fully shielded hardened steel shackle that has pry resistant features and is virtually impossible to cut.
DIMENSIONS: Lock - (see image) - A) 3/8 (10mm), B) 19/32 (15mm), C) 1-23/32 (44mm) Width 2-7/8 (73mm). Hasp measure 4-1/2 Wide X 9in Long.
Lock: Hardened diecast zinc is strong, durable and resists corrosion. 6-pin cylinder for maximum pick resistance - Removable cylinder for replacement or repinning. HASP: Solid steel powder coated construction. To install: Use hasp as mounting template. A 1/4" gap is recommended for most applications.

SaleRank No. #12

Master Lock 911DPF Heavy Duty Outdoor Padlock with Key, 1 Pack, Yellow

Heavy duty padlock with key is best used for contractors or small businesses; For indoor and outdoor use
Padlock with key features laminated steel construction and hardened boron alloy shackle for strength and security, weatherproof body and FlexFit keyway cover add protection against moisture, dirt and grime
Heavy duty lock features a 5-pin cylinder and dual ball bearing locking mechanism provides maximum pick and pry resistance; Removable cylinder to rekey your lock if needed
2-1/8 in. wide lock body; 5/16 in. diameter shackle with 1-1/8 in. length, 7/8 in. width
One padlock, two keys

Rank No. #13

Master Lock - (4) High Security Pro Series Keyed Alike Padlocks 6230NKALH-4 w/ BumpStop Technology

Four (4) High Security Locks Keyed Alike w/ 8 Keys. ProSeries hardened solid steel body padlocks are designed for Commercial/Industrial applications. These locks feature the BumpStop Advanced Cylinder Technology. (for explanation see more product details below). The same lock with a shorter shackle is also available, search 6230NKA.
ATTENTION: If you order two 4-packs they will NOT necessarily be keyed the same. To ensure you get two 4-packs keyed alike, you must order the 8-pack.
APPLICATIONS: Industrial and manufacturing environments. it's a popular lock used by business owners to secure their storefronts and business gates. With Marine recreation uses, they will withstand the harsh elements. Utility meters, substations and cable boxes to name a few others.
DIMENSIONS: 2-1/2" (64mm) wide round solid steel body, each weighing 1.68 lbs. A 7/16" (11mm) diameter hardened boron alloy shackle with 2" (51 mm) inside height clearance.
CHROME rustproofing provides longer life. These high security, rekeyable 5-pin cylinders with spool pins are virtually impossible to pick. And a dual ball bearing locking mechanism resists pulling and prying.

Rank No. #14

Master Lock 1174D Padlock, 1.5" x 2.2" x 3", Stainless Steel

57MM Stainless Steel Heavy Duty Combination Lock
Set your own combination
4 Digit Dials – Covered by a weather resistant cover
Hardened Steel Shackle
No Key Override

Rank No. #15

Master Lock Magnum Padlock - 2" W x 2-1/2"L Shackle, Eight (8) Keyed Alike Locks M5NKALJSTS-8 w/BumpStop Technology

Eight (8) Locks Keyed Alike w/ 16 Keys. A shorter 1-1/2" (38mm) shackle version available - search: M5NKASTSLF
These locks feature the BumpStop Advanced Cylinder Technology. (for explanation see more product details below).
If you order two 8-packs or any multiple of this lock they will NOT automatically be keyed the same. To receive 16 keyed alike you will need to order direct from the merchant LocksChocksTiedowns also available here on Amazon.
SPECIFICATIONS: 2" (51mm) wide laminated steel body for superior durability. 2-1/2"L (64mm) x 3/8" thick octagonal BORON CARBIDE shackle is 50% harder than hardened steel.
COMMERCIAL MAGNUM offers a higher level of weatherability and security for applications in outdoor, corrosive and caustic environments. Stainless steel body cover and top and bottom plates for exceptional weather protection. Chrome-plated shackle for excellent rust resistance. Superior pry resistance with dual-ball bearing locking.

Rank No. #16

Master Lock 6271KA 10 Pack - 2-7/8in. ProSeries Reinforced Hidden Shackle Rekeyable Pin Tumbler Keyed Alike Padlock, Chrome

Ten (10) high security ProSeries Padlocks designed for Commercial/Industrial applications. Locks are keyed alike w/ 20 total keys. If ordering multiple 10 packs, they will NOT necessarily be keyed alike.
Lock body conceals shackle! "Bolt Cutter Tough" fully shielded 3/8 (9mm) diameter reinforced Zinc Die-Cast shackle offers impossible to cut and pry resistance features (see More Product Details below).
Hardened boron alloy shackle for superior cut resistance. Solid iron shackle shroud resists harsh physical attacks. Dual ball bearing locking mechanism resists pulling and prying.
High security, rekeyable 6-pin cylinder with spool pins is virtually impossible to pick. Lifetime guarantee.
This lock is also available with the BumpStop Technology. Search 6271NKA in Amazons search window.

Rank No. #17

Master Lock Outdoor Combination Lock, Heavy Duty Weatherproof Padlock, Resettable Combination Lock for Outdoor Use, M176XDLH,Silver

Indoor and outdoor combination padlock; maximum security lock with a zinc body is best used as a gate lock, shed lock, and storage locker lock.Control method:Application.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
Set your own four-digit combination lock for easy combination recall; Back-up key included for operation without the combination
Lock is constructed with a zinc body and reinforced body bumper for strength and reliability; covered dials for superior weather protection
Roller pin cylinder provides maximum pick and pry resistance; Tough-Cut octagonal boron-carbide shackle is 50% harder than hardened steel
2 in. (51 mm) wide lock body; 3/8 in. (10 mm) diameter shackle with 2 in. (51 mm) length, 15/16 in. (24 mm) width; extended shackle for application flexibility

SaleRank No. #18

Master Lock Bike Lock Cable, Set Your Own Combination Bicycle Lock, Cable Lock for Outdoor Equipment, Black

Outdoor bike cable lock with combination is best used as a bicycle lock and to secure other outdoor equipment.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
Cable bike lock features a set your own combination, four-digit combination lock; Provides a basic security level that is best used as a theft deterent
Bike lock is made with braided steel for flexibility, and includes a protective vinyl coating that helps prevent scratching
Bike lock cable is 6 ft. (1.8 m) long and 5/16 in. (8 mm) wide in diameter
Includes one combination bike lock cable; Set and reset your own combination

Rank No. #19

Master Lock M5XTLJ Magnum Heavy Duty Outdoor Padlock with Key, 2 Pack Keyed-Alike,Silver

Outdoor lock; Heavy duty padlock with key is best used for outdoor storage and fences, self-storage units and lockers, tools, job boxes and more.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
Key lock features Dual Armor construction: laminated steel lock body surrounded by stainless steel and zinc outer components and Tough-Cut octagonal boron-carbide shackle is 50% harder than hardened steel
4-Pin cylinder and dual ball bearing locking for increased pick and pry resistance; Reinforced body bumper for increased scratch resistance
2 in. (51 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 two padlocks with two keys; Both keys open all locks

SaleRank No. #20

Master Lock 1921D Keyed Padlock, 2-1/8 in Wide, Black

Heavy duty padlock with key is best used for indoor and outdoor use
Padlock with key features laminated steel construction and hardened boron alloy shackle for strength and security, weatherproof body and FlexFit keyway cover add protection against moisture, dirt and grime
Heavy duty lock features a 4-pin cylinder and dual ball bearing locking mechanism for pick and pry resistance
2-1/8 in. wide lock body; 5/16 in. diameter shackle with 1-1/8 in. length, 7/8 in. width
One limited-edition 100-year celebration padlock, two keys; Also includes one Master Lock 100-year celebration key chain

Last update on 2023-07-30 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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FAQ:

Q: How is the length of a Master Lock measured?

A: Many Master Lock padlocks are available with extra long or short shackles to provide sufficient reach to lock around the application. The shackle length is measured from the top of the lock body to the inside of the shackle.

Q: How to know which Master Lock is the best choice?

A: Master Lock offers the widest variety of padlock styles, materials and keying options of any manufacturer. How do you know which lock is the best choice for your needs? Consider your application, the environment and the size or space requirements the lock needs to fit Then, choose the lock with the material and size that match your needs.

Q: What kind of padlock do I need for my home?

A: Consider your application, the environment and the size or space requirements the lock needs to fit Then, choose the lock with the material and size that match your needs. ProSeries® high security padlocks are available in five styles including Weather Tough®, High Security Iron Shroud, Solid Steel, Solid Brass and Solid Aluminum.