Crack and Hack to Recover Combination Lock or Master Lock Combination Instructions

Master LockPassword, or pass phrase, passcode, or PIN (personal identification number) has been used prominently during daily life to access to certain resources such as Windows accounts, password protect files, websites’ log-ins and locks’ combination numbers. If you forget or misplace your master combination lock number, you can try to crack the combination lock to retrieve and get back the combination number by following the instructions and steps in the following video tutorial guide.

The combination cracking guide should works on Master lock, although some of the techniques can also be applied to other manufacturers’ locks, such as ACE Hardware, American and Dudley brands of combination locks. The steps are plenty, and involves some math calculation, and might take your few hours to crack and hack to recover the master lock combination number. It might be quicker to simply buy a bolt cutters. For more information on how a combination lock works and why these techniques work, plus pictures of the inside of a combination lock, visit here.


228 Responses to “Crack and Hack to Recover Combination Lock or Master Lock Combination Instructions”

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  1. Mariuxi
    October 25th, 2009 12:37
    225

    Hey,

    Can anyone help me…..i forgot the combo to an “american lock” serial no.

    A56
    100328A
    05

    I don’t know which are the numbers you need but i would really appreciate it….i thought it was 38-5-28 but it’s not working

    Thanks alot,
    Mariuxi

  2. jerry
    October 16th, 2009 09:28
    224

    please help mine is an american masterlock
    num. 11864747

  3. STEPHANIE
    October 7th, 2009 02:18
    223

    The video isn’t working. Any chance you could help with the code for my Masterlock? The serial code is 931047.

    Thanks

  4. Shirley
    October 6th, 2009 22:08
    222

    I work for a school district and was given a small Master Lock combination padlock with Fortress stamped in the front of the dial. The number stamped in the back is 903794. Can you supply a combination? Thanks

  5. maria
    October 5th, 2009 05:07
    221

    i lOst the lOck combO and i am going crazy the number is 901699
    HELP !!!!!!!!!!!!!!!!!!!!!!!
    THANK U !

  6. diego
    October 1st, 2009 02:30
    220

    Dear Joe,
    I have a Master Sphero combination lock with serial number 903654. Any help you could offer would be hugely appreciated!

  7. Yari
    September 30th, 2009 01:28
    219

    hey, I a have a sphero by marter lock, this is my lock from when I was in high school and I can’t remember what the combination is, I would greatly appreciate your help.
    8000019
    or it may be
    80C0019
    Thank you so much in advance!

  8. travis
    September 23rd, 2009 02:29
    218

    Please help me remember my combo. Master Lock serial number is 8000270.

    Thanks

  9. Rifet
    September 18th, 2009 09:02
    217

    i forgot my master comibnation lock the serial code is 8000239 please send me an email at mmazda2003@hotmail.com

  10. Richard
    September 17th, 2009 03:00
    216

    I have a masterlock with the serial number of
    906590 pls send me a combination!!

  11. Ashley
    September 16th, 2009 01:30
    215

    Hi I have a master lock and I don’t remember the combination. The code on the back is 903550. Thanks

  12. WtcHazel
    September 14th, 2009 07:13
    214

    My son lost his key and dosent remeber his combination.

    MASTER LOCK
    V610
    30825132
    07
    CAN YOU PLS. HELP.
    I would buy a new lock but I recenty lost my job, and can’t afford to spend.
    Thank you.

  13. WtcHazel
    September 14th, 2009 07:11
    213

    My son lost his key and dosent remeber his combination.

    mASTER lOCK
    V610
    30825132
    07
    CAN YOU PLS. HELP.
    I would buy a new lock but I recenty lost my job, and can’t afford to spend.
    Thank you.

  14. TrashCompaqtor
    September 11th, 2009 11:11
    212

    my Master lock serial: 626410

    This one probably has a different algorithm, because I’ve found other people who have gotten the first 12 numbers very similar to mine. I get 4 whole numbers that end the same and 8 numbers that end with a decimal.

    1.5, 5, 8.5*, 11.5, 15, 18.5*, 21.5, 25, 28.5*, 31.5, 35, 38.5*

    * the numbers 8.5, 18.5, 28.5, and 38.5 were not perfectly within their ranges, but the other 8 numbers were perfect. So that leads me to conclude that maybe my 3rd number of the sequence could be a possibility of 8 numbers: 8, 9, 18, 19, 28, 29, 38, and 39. That’s way too much work to test!

    I would appreciate it if anyone knows of any other algorithms to try for these Master locks that don’t seem to be the same.

  15. jacqualyn
    September 6th, 2009 04:48
    211

    425
    115443A

    thanks its and american lock

  16. jj hardy
    September 1st, 2009 08:15
    210

    american lock A61 100485A .lost the combo.

  17. Alex Oh
    August 31st, 2009 09:20
    209

    Joe my master lock is v629136947 b0
    plz help TY

  18. Terry Valenti
    August 28th, 2009 22:40
    208

    I have an American comibination lock that I don’t remember the combination number.

    00338

    Thank you!

  19. Ssfourteen
    August 22nd, 2009 02:24
    207

    Hey I have an American combination lock, serial H1247, anyway to get the combination? please email me with help, thanks.

  20. Joanna
    August 18th, 2009 07:10
    206

    my serial number is 922152 (master lock)

  21. carlos
    August 16th, 2009 08:50
    205

    my bad wrong serial no. its 102065

  22. carlos
    August 16th, 2009 08:27
    204

    i have an american lock
    960
    103119A
    thanks

  23. Steve
    August 15th, 2009 04:42
    203

    I forgot combo for master lock serial no.903128. Starts w/a 36

    Thanks!

  24. Juan Carlos Pingus
    August 9th, 2009 07:22
    202

    Tengo un candado Master con nùmero de serie 918743 se me ha olvidao la clave por falta de uso

  25. edgar
    August 1st, 2009 15:21
    201

    can you help me find my combo
    903713 thank you

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