Not the best fit — needed some adjusting to make it work.
Carlos F.
✓ HVAC Technician
Can't find the exact part? Request it and we'll source it for you.
The Master Lock MLS410BLU is a safety lockout padlock, keyed different with a 6-pin tumbler cylinder, with permanent write-on labels, 1-1/2 inch, Xenoy, blue, 1/4 inch shackle diameter, 1-1/2 inch shackle clearance.
A lockout padlock is not a security lock and understanding the difference is the whole point.
Under lockout/tagout procedure, a worker servicing equipment applies their own lock to the energy isolation device. That lock exists to stop the machine being energised while they are inside it — and its security value is essentially zero, because anyone with bolt cutters could remove it. What stops the machine being started is procedure, backed by a lock that cannot be opened by anyone else and that carries the name of the person who applied it.
Which is why keyed different is mandatory rather than a preference. One lock, one key, one worker. If a supervisor holds a master key, the lock protects nobody — the entire mechanism is that only the person inside the machine can release it.
Xenoy is a non-conductive polymer, which matters because lockout points are frequently electrical.
The write-on label is not a nicety. A lock on an isolation point with no name is an unidentified lock, and an unidentified lock stops a plant restarting while people search for its owner.
Colour supports the same identification scheme.
Applications include electrical, mechanical, and process lockout/tagout.
Need help finding the right part?
Fill out a request and our team will get back to you shortly.
Not the best fit — needed some adjusting to make it work.
Carlos F.
✓ HVAC Technician
Works great, price was fair, and delivery was faster than expected.
Mary L.
✓ Verified Buyer
Works, though shipping took longer than I'd hoped.
David J.
✓ Maintenance Tech
Works as described. Not perfect but solid for the price.
Hassan J.
✓ Contractor
Decent enough but the quality feels a little cheaper than the photos.
Rebecca C.
✓ Facilities Manager
Good product. Would have given five stars but the finish had a small mark.
Matthew N.
✓ Homeowner
Top quality — feels well built and performs even better than I expected.
James W.
✓ Verified Buyer
Poor quality — stopped working within a couple of weeks.
Megan K.
✓ HVAC Technician
Perfect fit and finish. You can tell it's a quality part.
Michael Q.
✓ Verified Buyer
Okay value. Does what it says, just not impressed either way.
Daniel G.
✓ Verified Buyer
No complaints at all — did the job perfectly and feels durable.
Omar L.
✓ Verified Buyer
Toll-Free: (945) 427-9519