- #MASTER LOCK SERIAL NUMBER LIST WITH COMBINATION HOW TO#
- #MASTER LOCK SERIAL NUMBER LIST WITH COMBINATION SERIAL NUMBER#
Shim does not work, and I’m not suprised.įinding the 12 digit’s and eliminating 11 of them, then using modulo 4 to further get 100 combinations still works. Just so everyone knows, I bought two brand new masterlocks today, name brand with the black dial. (the combination was further down the list of possibilities that the first one.) One thing to remember is that most locks are made to be exploited, so a locksmith can unlock them if need be. Then I opened another older lock my roomate had forgoton the combo for in about 8. I opened the new lock without looking at the combiniation in under 5 min. Finding the 12 digit’s and eliminating 11 of them, then using modulo 4 to further get 100 combinations still works. Shim does not work, and I’m not suprised. UPDATE: The linked video above has long been dead.Ĭheck out our for an embedded shimming video Posted in Post navigation.
#MASTER LOCK SERIAL NUMBER LIST WITH COMBINATION HOW TO#
UPDATE: x04d sent in a video demo (DivX) (dead link) of how to open a lock in 2 sec. The 'Swap' button will switch back and forth between Large. This is what the 'Swap' and 'Show all' buttons are for. While in most cases the second number on Dudley locks is smaller, there are a few where the second number is actually larger. If you use the above method, it cuts down the number of trials to about 400, and any Dudley I've ever had, the middle number is the lowest of the three. This cuts it down to 20 digits or 8000 combinations. EDIT: Sometimes, if you pull on the lock, you.įor a Dudley lock, assume all numbers in the combination are a multiple of 3 (this is fair because of the size of the grooves).
#MASTER LOCK SERIAL NUMBER LIST WITH COMBINATION SERIAL NUMBER#
If it does belong to a school, chances are they will have the combo on file - match the serial number on lock.
User Name: Remember Me? Password: Register: FAQ: Social Groups. Welcome to the REVscene Automotive Forum forums. You will end up with about 100 combinations to try, but that’s far better than having to throw the lock out which I’m sure would happen if you had to try 64,000. You can then use that number to determine the other possible numbers in the combination.
First step is to determine the last number in the sequence.
The construction of the lock prevents this from happening: sloppiness in the dial and the numbers are not mathematically independent. In a perfect world there would be 64,000 possible lock combinations (40 3). Here’s any easy method for backing out the combination of a Master Lock. If you are unable to provide either the prefix code or serial number, please contact Gunnebo (ChubbSafes parent company) direct for further assistance T: 01902 455 111 or email Chubb cash safes Prefix Identification chart. Safe makes like Dudley display model number on the top face of the external hinge and on the handle.