Image 1 of 2
Master Lock
Master Lock 510D
$1.99across 128 retailers
Model: 510DColor: N/AUPC: 71649387203
Where to Buy
Newest price seen: Jun 8, 2025
| Retailer | Price | Last seen | Buy |
|---|---|---|---|
 Amazon Sold by ed,s variety store | $1.99 | Jun 8, 2025, may have changed | Buy Now |
F Frrjejxssoez | $4.75 | Jun 8, 2025, may have changed | Buy Now |
J jpccatalog | $5.77 | Jun 8, 2025, may have changed | Buy Now |
T The Outdoor Warehouse | $6.09 | Jun 8, 2025, may have changed | Buy Now |
T Taylor Security & Lock | $6.14 | Aug 15, 2022, may have changed | Buy Now |
Prices are collected from retailer listings; each row shows the date we last saw that price. Return and shipping terms are each store's standard policy from our retailer research (April 2026 to May 2026). Some products and categories have different terms, so check with the store before you buy.
Used & Refurbished
✨ See 2 used & refurbished prices with ShopSavvy ProGet the app →Pros
- •Great quality for a reasonable price.
- •Versatile: suitable for multiple doors and areas.
- •Strongly recommended by some users.
Cons
- •The padlock design allows it to come off easily and can be reattached upside down, blocking key access.
- •The product may necessitate removal by cutting if mishandled.
- •Users have reported a consistent design flaw causing assembly issues.
- •There is a risk of incorrect assembly that renders the product unusable.
- •Necessary tools for disassembly might incur additional costs.
- •The locking mechanism tends to fail after a year of use.
- •Quality of the locks has deteriorated over time, leading to frequent replacements.
- •Users are dissatisfied with the company's contribution to environmental issues due to frequent replacements.
Bottom Line
The Master Lock 510D Lock offers good quality at a reasonable price and suits multiple locking purposes. However, it has significant design flaws that can lead to installation mistakes, rendering the lock unusable, and potential issues with the locking mechanism over time. If reliability and ease of installation are priorities, you might want to consider alternative products.
What Reviewers Are Saying
Criticized
poorly designed50%
locking mechanism fails10%
screen upside down30%
bad quality10%
📚More About Master Lock 510D
Discussion
🔍About This Page
ShopSavvy compares prices across thousands of retailers so you always get the best deal. Prices are collected from retailer listings, and each one shows the date we last saw it. Our expert reviews and community discussion help you make informed buying decisions.