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🔐 Lock in your security with style and strength — don’t get left exposed!
The Master Lock 40DPF Stainless Steel Discus Padlock combines a corrosion-resistant stainless steel body with a hardened steel shackle and advanced 4-pin cylinder locking mechanism. Its shrouded design minimizes shackle exposure, providing superior cut and pry resistance for indoor and outdoor use. Measuring 2-3/4 inches wide, it’s ideal for securing garages, sheds, and trailers, backed by a Limited Lifetime Warranty for lasting peace of mind.























| ASIN | B00004SQKX |
| Additional Features | Cut Resistant |
| Best Sellers Rank | #6,664 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #19 in Keyed Padlocks |
| Brand | Master Lock |
| Brand Name | Master Lock |
| Color | Silver |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.7 out of 5 stars 4,240 Reviews |
| Finish Types | Polished |
| Global Trade Identification Number | 00071649030147 |
| Included Components | 1 Master Lock Manufactured Product |
| Item Dimensions | 0.2 x 6 x 3.4 inches |
| Item Type Name | Discus Padlock |
| Item Weight | 9.6 ounces |
| Item dimensions L x W x H | 0.2 x 6 x 3.4 inches |
| Lock Type | 4-pin cylinder and dual locking lever mechanism |
| Manufacturer | Master Lock |
| Manufacturer Part Number | 40DPF |
| Manufacturer Warranty Description | Limited Lifetime |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model Name | Stainless Steel Discus Padlock |
| Model Number | 40DPF |
| Number of Items | 1 |
| Number of Packs | 4 |
| Number of Pieces | 10 |
| Recommended Uses For Product | Security |
| Shape | NO |
| Special Feature | Cut Resistant |
| Style Name | Modern |
| UPC | 723434574588 182682945111 071649011382 343538051510 071649030147 071649101434 074748348427 071649015083 089837292802 077349962108 025706603218 657819388777 795871334643 |
| Unit Count | 1 Count |
M**L
Durable and reliable lock for storage
I've owned several of these over the years and the only reason I've ever had for replacing one was having lost the previous. These are fantastic locks, light weight but durable and very reliable; though if you are going to be using one outdoors, a spot of WD-40 every so often will keep it operating smoothly.
A**.
Security and peace of mind for my trailer
I purchased these a year and a half ago for my enclosed trailer doors and I'm thoroughly impressed with its performance. They are perfect for securing multiple areas, and the shrouded design adds an extra layer of protection against bolt cutters. The stainless steel construction ensures durability and resistance to corrosion, making it ideal for both indoor and outdoor use. The locks feel robust and well-made, providing a sense of security that’s hard to beat. The body is substantial, and the locking mechanism operates smoothly without any hitches. One of the standout features is fact that it retains the key when unlocked which ensures that it cannot be left unlocked. This is a great safety feature, especially for high-security needs. Overall, these locks offer excellent value for money, combining strength, reliability, and convenience. I highly recommend them for anyone in need of a reliable locking solution.
B**E
Master disc locks scream high quality
Master disc locks scream high quality.... why would you pay a couple dollars less for a cheap knockoff, when you're protecting thousands of dollars of stuff in a container or storage shed... at around $9.99 to 10..99 these are the ones to get..
A**L
Solid security and durability for a reasonable price
The Master Lock Padlock, Stainless Steel Discus Lock is a sturdy and reliable lock that feels built to last. The stainless steel design resists rust and weather well, making it great for outdoor use on storage units, gates, or sheds. It’s easy to use, and the discus shape adds extra protection against bolt cutters. Overall, it offers solid security and durability at a reasonable price.
K**W
Great lock
For perfectly on my POD storage container for an upcoming move. Weather during the time was extremely rainy and wet but the lock remained rust free and showed no signs of sticking when I opened/closed the lock. Unit comes with two keys, so it was great to have a spare.
B**Y
Great locks
Master lock speaks for it self! They’ve been around as long as I can remember. Works flawlessly!
A**T
Perfect for POD storage container
I purchased this to use on a 16-ft POD storage container for a cross-country move. It’s heavy-duty, sturdy, and worked perfectly in varying weather. It came with 2 sets of keys which is a plus. It’s small enough that you can easily store it in a tool box or drawer and use again when needed. I would recommend and repurchase this!
B**S
Master locks that work.
As shown and stated.
C**E
Perfect..
Best price for a great lock for sea containers..
F**T
Un Fort Knox fatto lucchetto, ma duro da morire da aprire e chiudere
Ha l'aria di poter resistere alla dinamite, ma al momento della prima installazione si apriva e richiudeva con molta difficoltà. La forza che ho dovuto applicare è stata parecchia. Il problema è che le chiavi sono modello casetta della posta, come dimensioni e spessore, al che viene da pensare che applicando troppa forza si spezzino, e addio lucchetto. Risolto con abbondante WD40 per serrature. Però, una pecca non indifferente.
M**Z
Seguros
Super buena calidad
A**R
Heavy Duty, Difficult to cut lock
Heavy Duty Lock
A**N
Excellent
Excellent
Trustpilot
2 weeks ago
2 weeks ago