Master Lock Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Master Lock sales on Amazon US totaled 123,300 units in July 2026 (▲ 0.5% vs. the prior month), generating an estimated $2,049,941 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 56.8% of unit volume and 46.9% of revenue, while a typical listing is priced at $19.50. The keyword itself pulled 46,932 Amazon queries over the same period (▲ 42.7% MoM).
Zooming out to the 12-month window ending July 2026, the master lock Top 50 moved 1,235,850 units and $19,915,732 in cumulative sales — an average of 102,988 units and $1,659,644 per month. Monthly throughput topped out at 160,850 units in August 2025 and dipped to 59,900 in May 2026, leaving the latest reading 23.3% lower than August 2025.
Master Lock Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
123.3K
▲ 0.5% MoM
Monthly Revenue 2026/07
$2M
▼ 0.7% MoM
Top 10 Market Share 2026/07
56.8%
Master Lock Market Share & Sales Concentration on Amazon US — July 2026
The most-sold master lock listing on Amazon US in July 2026 is ASIN B00005JSBK (Brand: Master Lock), which sold 10,000 units at $0.00 apiece — equal to 8.1% of every unit tracked in this report.
The Top 10 ASINs account for 70,000 units and $960,780 in July 2026 — 56.8% of unit volume and 46.9% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Master Lock' on Amazon
July 2026
Is 56.8% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B00005JSBK
Master Lock Combination Padlock, Locker Lock, for Gym and School 1530DCM | Resettable Combination Padlock For Gym Lockers, Gates, Sheds, Cabinets, Storage, and School Use
10K
▲ 42.9%vs. prior month
$91.9K
latest month
12-month trend
B0002YP1VC
Master Lock Portable Key Lock Box, Combination Lock Box Holds 5 Keys 5400EC | Secure Storage Lock Box For Realtors, Landlords, Tenants & Property Managers, Weather Resistant, Resettable 4-digit Code
10K
▲ 0.0%vs. prior month
$302.8K
latest month
12-month trend
B075DFPR2W
Puroma 2 Pack Combination Lock Locker 4 Digits Combo Padlock Gym Black | For School Gate Fence Toolbox Hasp Storage, Outdoor, Resettable, Weatherproof, Side Window, Crack Cut Resist, Hardened Steel
10K
▲ 0.0%vs. prior month
$89.9K
latest month
12-month trend
B07T2C3QNZ
Amazon Basics 4-Digit Combination Lock, Black, 2-Pack
8K
▼ 20.0%vs. prior month
$67.1K
latest month
12-month trend
B0000D1E3S
Master Lock 6 ft Cable Bike Lock 4-Digit Combination 1/2 in Diameter 8122D | Set Your Own Combo Vinyl-Coated Braided Steel Lock Protects Bicycles, Scooters, Outdoor Equipment from Theft
7K
▲ 250.0%vs. prior month
$90.6K
latest month
12-month trend
B000BVXDZM
Master Lock Combination Cable Bike Lock 4-Foot Long Bicycle Lock, 8143D | Bike Lock Provides Anti-Theft Security For eBikes & Outdoor Equipment, Preset 4-digit Combination With Braided Steel Cable
7K
▼ 30.0%vs. prior month
$62.5K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Master Lock Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Master Lock is the best-performing master lock brand in July 2026, moving 52,000 units across 8 ASINs for 74.3% of Top 10 volume. Puroma follows with 10,000 units (14.3%), ahead of Amazon Basics on 8,000 units (11.4%).
With 3 brands splitting the Top 10 and 100.0% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $8.39 to $13.33, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Master Lock
8 ASINs in Top 10
74.3%
Units
52K
Revenue
$803.8K
Avg. price
$13.33
B00005JSBK
$0.00·★4.5·17.1K revsMaster Lock Combination Padlock, Locker Lock, for Gym and School 1530DCM | Resettable Combination Padlock For Gym Lockers, Gates, Sheds, Cabinets, Storage, and School Use
Units sold10KB0002YP1VC
$30.26·★4.7·25.4K revsMaster Lock Portable Key Lock Box, Combination Lock Box Holds 5 Keys 5400EC | Secure Storage Lock Box For Realtors, Landlords, Tenants & Property Managers, Weather Resistant, Resettable 4-digit Code
Units sold10KB0000D1E3S
$12.92·★4.4·13K revsMaster Lock 6 ft Cable Bike Lock 4-Digit Combination 1/2 in Diameter 8122D | Set Your Own Combo Vinyl-Coated Braided Steel Lock Protects Bicycles, Scooters, Outdoor Equipment from Theft
Units sold7KB000BVXDZM
$8.99·★4.4·41.1K revsMaster Lock Combination Cable Bike Lock 4-Foot Long Bicycle Lock, 8143D | Bike Lock Provides Anti-Theft Security For eBikes & Outdoor Equipment, Preset 4-digit Combination With Braided Steel Cable
Units sold7KB005K6JQXQ
$16.17·★4.3·18.1K revsMaster Lock Small Travel Safe with Cable, Gray Combination Lock Box, 5900D | Portable Safe Protects Passports, Cash, Phones and Credit Cards, Secure To Fixed Object For Theft Protection, Water Resistant
Units sold5KB000RFLNG8
$14.99·★4.6·10.5K revsMaster Lock Magnum Outdoor Padlock, Heavy Duty Keyed Lock M115XDLF | 1-7/8" Weather Resistant Lock Protects Outdoor Storage, Fences, Tools & Job Boxes, Tough-Cut Boron-Carbide Shackle
Units sold5KB000BD8MQ0
$6.49·★4.4·8.1K revsMaster Lock Combination Padlock, Gym Locker Lock Custom 3-Digit Code, 647EC | 1-3/16-inch Metal Combination Lock, Set Your Own Combination Locker Lock, Travel Lock For Luggage or Backpack
Units sold4KB012SBHIOY
$16.79·★4.4·13K revsMaster Lock Black Set Your Own Combination Bike Lock, Metal Cable Lock has a Weather Resistant Vinyl Coating for Outdoor Durability, 5 Feet Long, 8370D
Units sold4K
Puroma
1 ASIN in Top 10
14.3%
Units
10K
Revenue
$89.9K
Avg. price
$8.98
B075DFPR2W
$8.98·★4.5·34.6K revsPuroma 2 Pack Combination Lock Locker 4 Digits Combo Padlock Gym Black | For School Gate Fence Toolbox Hasp Storage, Outdoor, Resettable, Weatherproof, Side Window, Crack Cut Resist, Hardened Steel
Units sold10K
Amazon Basics
1 ASIN in Top 10
11.4%
Units
8K
Revenue
$67.1K
Avg. price
$8.39
B07T2C3QNZ
$8.39·★4.3·8.2K revsAmazon Basics 4-Digit Combination Lock, Black, 2-Pack
Units sold8K
Trending Master Lock Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B0000D1E3S booked 7K units at $12.92, with ▲ 250.0% MoM change. On the growth side, B0029Z9T7O leads positive momentum with ▲ 100.0% MoM growth on 2K units, with B000WO84Z2 close behind at ▲ 100.0% MoM on 2K units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B0000D1E3S
Master Lock 6 ft Cable Bike Lock 4-Digit Combination 1/2 in Diameter 8122D | Set Your Own Combo Vinyl-Coated Braided Steel Lock Protects Bicycles, Scooters, Outdoor Equipment from Theft
Price
$12.92
Rating
4.4
Reviews
13K
Latest month sales
B0029Z9T7O
Master Lock 1530DPNK Locker Lock Combination Padlock, 1 Pack, Pink
Price
$8.99
Rating
4.7
Reviews
1.6K
Latest month sales
B000WO84Z2
Master Lock TSA Approved Combination Luggage Lock Assorted Color 4688EC | TSA Accepted Set Your Own Combination Luggage Cable Lock, Suitcases, Backpacks, Travel, Airport Security, 3-Digit Lock
Unlock to view ASIN details and product titles
Price
$6.39
Rating
4.3
Reviews
20.9K
Latest month sales
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