🔒 Lock in your security with pro-level protection—don’t get left exposed!
Master Lock’s Pro Series 4-pack keyed alike padlocks combine hardened solid steel bodies, rustproof chrome finish, and advanced BumpStop cylinder technology to deliver industrial-strength security. Featuring a 7/16" boron alloy shackle and dual ball bearing locking mechanism, these locks resist cutting, pulling, prying, and bumping—ideal for commercial, industrial, and marine environments where reliable protection is non-negotiable.
| Brand | Master Lock |
| Special Feature | Key Lock |
| Lock Type | Key Lock |
| Item dimensions L x W x H | 4 x 6 x 3 inches |
| Material | Alloy Steel, Chrome |
| Recommended Uses For Product | Security |
| Style | Industrial |
| Color | Chrome |
| Number of Pieces | 1 |
| Finish Type | Chrome |
| Controller Type | Hand Control |
| Control Method | App |
| UPC | 071649108600 |
| Manufacturer | Master Lock |
| Item Weight | 6.49 pounds |
| Product Dimensions | 4 x 6 x 3 inches |
| Item model number | 6230NKALH |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 6230NKALH |
| Special Features | Key Lock |
A**W
Great lock 🔐 and same keys is good 👍 works 💪 great
I like the locks 🔒 it's heavy duty and 8 same keys 🔑 .Great price and very fast shipping.
E**S
Masterlock secure
Master lock very durable and rust resistant, good fit on the sheds for security. The design is also nice
S**.
Great Matching Lock Set
This lock set is great because they are all keyed alike and came with enough keys to give to all the workers. They look heavy duty and hope they will hold up to outdoor conditions.After about 2 months I have noticed a little surface rust and the key is a little harderd to turn. I plan to give it a quick squirt of lubricant to help it out. Hopefully they will hold up.
M**S
awesome, hardcore security locks with remarkable build quality
These locks are not cheap, so I only gave them 4/5 stars for "value for money". But if you really care about what you're locking up then this lock is worth a look. The lock is massively heavy and sturdy and the build quality is much higher than any other lock I've ever seen. My wife noticed that this lock's key is bigger than our house key -- well, I suspect this lock is more sturdy than our house lock also! :-) I love that the locks can be rekeyed, and that all 6 that I bought use the same key. Highly recommended!
T**R
THEY ARE HEAVY BUILT
Put them on a remote storage container for security. I have to play with the keys to get them to work some times.
D**N
Good buy
Gotta keep ball bearings in lock lubricated or rust will be a problem. If maintained, great lock wth smooth action. Have had mine several years outdoors, still look new
J**Y
strong lock
I got these to go on my electrical yard which is exposed to the elements. My previous weather proof locks would still freeze so I anticipated this was a problem I would have to continue dealing with but, now would have the option to torch them.As expected the locks did freeze shut in the cold Wisconsin weather we are currently having (around 9°F to 30°F). I took my blow torch to them and they opened right up. These are very strong locks with a think locking link. Very happy overall but, just know in this type of climate they most like will freeze but, with no rubber they can quickly and easily be defrosted. Which is why I purchased these.
Z**E
perfect
This was as discribed HD lock the lock worked perfectly thank you
Trustpilot
2 months ago
2 months ago
