Masterlock Combination locks

by **thedude2579** » 13 Jul 2007 17:16

i know in the older locks the numbers in the back were a code for the combination of the lock. i am wondering does masterlock still do such and does anyone know any of the equations. :?:

by **Jaakko** » 13 Jul 2007 17:21

They might keep a "serial number to code number" - referencebook in their shelf (or on computer), but there is just no point in that. And as far as I know, there is no connection whatsoever with the code and the serial number.

by **UWSDWF** » 13 Jul 2007 17:40

depends on the model

by **Eyes_Only** » 13 Jul 2007 20:13

They do make a series of code books that list most or some combo lock combinations but they are pretty pricey, almost $300 for the CD version and theres no guarantee that your lock is listed there.

On the other hand you can spend only about $24 on a few padlock shims instead. They work pretty well and thats all I ever use for combo locks. I heard there a video instruction of how to crack one by manipulation on youtube but I've yet to check it out.

by **tmaxx258** » 13 Jul 2007 20:56

you also make shims out of a pop/beer can.

by **Eyes_Only** » 13 Jul 2007 21:22

Yeah but if you are new at this kind of thing it's much easier to use and learn on commercially available tools first.

by **blake1803** » 14 Jul 2007 14:29

Your options with a Master combo lock, assuming you're talking about a model 1500 or similar, are:

- Shims
- Looking for the serial number in a code book if the lock isn't too recent (it's not like Master themselves create the code books/software, so it takes some time for recent numbers to show up in them)
- Some simple manipulation that will get it down to 100 possible combos to try out, which will take a good 15 minutes

To my knowledge there is no equation for turning a serial number into a combination, and even if there was, I would be absolutely shocked and dumbfounded if it works on locks made within the past 3 or 4 decades.

So, your options are bypass, a reference book/software, or manipulation, none of which are really encouraged for discussion in open forums as they have nothing to do with lock picking. Search around the site and I'm sure you'll find plenty of info on options 1 and 3, though.

by **thedude2579** » 15 Jul 2007 21:11

the old timer that told me about this in the first place said that if you divide the numbers even {(Example) from 123456789 to 123 456 789 } then there are several possibility's of what have been done to the numbers but the numbers on the back are the variables, then no matter which equation it is the numbers stay constant. ( very much like a protocol )

now on the other hand i know a stethoscope can be used to get the combo now my question is does any one know what to listen for or recordings what have been amplified enough to hear.

by **keysman** » 15 Jul 2007 21:52

thedude2579 wrote: the old timer that told me about this in the first place said that if you divide the numbers even {(Example) from 123456789 to 123 456 789 } then there are several possibility's of what have been done to the numbers but the numbers on the back are the variables, then no matter which equation it is the numbers stay constant. ( very much like a protocol )

HMMMMMM.. that is the first I have heard of that .. nice idea though.. I would be willing to bet that any correlation between the serial # and the actual combination is purely coincidental.

thedude2579 wrote:now on the other hand i know a stethoscope can be used to get the combo now my question is does any one know what to listen for or recordings what have been amplified enough to hear.

a stethoscope !!!! yeah! yeah! Thats the ticket!

I would suggest you do a web search for master combination padlock as this subject goes way beyond hobby picking .

by **Trip Doctor** » 15 Jul 2007 21:57

The only thing you'll hear is the clicking of the false gates (.. and the real gate, which is the 3rd number, which is pretty much useless to start with) on the drive wheel.

by **thedude2579** » 17 Jul 2007 18:04

Using the S/N on the back of the lock to get the combo is not luck at all the old timer that told me about it couldn't tell me much because a series of heart attack with a stroke or two made him forget a lot of things. but what he could remember is that master lock at one time had like 27 different equations and a hand full of them involved just simple prime factoring.

as far as the stethoscope the sounds are pretty distinct to a well trained ear

by **Jaakko** » 18 Jul 2007 0:46

thedude2579 wrote:as far as the stethoscope the sounds are pretty distinct to a well trained ear

Yeah, *click*....*another click*...*yet another click*....*click*. What is my combination?

If you know how combination lock works, you will realise that the sounds are not the whole deal.

by **copeman** » 18 Jul 2007 1:48

i have the demo of HPC's code source and it has brought up all of the combo's for the codes i have tried, so if you have a code you would like me to run drop me a PM and as long as you dont seem shady i will give you the combo

by **unbreakable** » 18 Jul 2007 6:44

Copeman, last time I checked it wont bring up the combo codes, probabley to stop kids from getting the combos to the whole school :wink:

It seems like nice software, I wish I had a use for it :lol:

by **Rodfather23** » 22 Jul 2007 0:43

So the software will not work then?

pitty I have an old master combo I was wanting to get the combo for.

Masterlock Combination locks

Masterlock Combination locks

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