I bought three Master Locks in Costco many years ago. It is a package with three locks. They were given to my kids for the secondary school lockers. They need to bring their own locks.
I googled it and found the official website has a contact form. You can request the code in different ways. So I took the picture and submitted the online form yesterday.
Fast, I got a response today.
After 2009, we no longer printed serial numbers and switched to a manufacturing build code. This was added as an additional security measure. Click here to see a detailed explanation of Date Codes on Combination Locks.The code 4612M, confirms your lock was made on the 46th week of 2012 .Unfortunately, we do not have your combo on file.
They don’t have it. Today I tried to find a way to crack it without breaking it.
YouTube has some videos about solutions, such as this.
I failed with this guide.
Later this afternoon, I tried another one when my hand got a good rest.
Following the instructions carefully, I succeeded in the third trial of a total of eight combinations.
Great. I can save it for the future.
