To open an old post office box combination lock without knowing the combination, you can try a few techniques. First, gently rotate the dial while listening for a subtle click or feel for a change in resistance; this may indicate the correct number. You can also use the "brute force" method by trying common combinations, such as 0-0-0 or 1-1-1, or by attempting to slowly and carefully manipulate the dial to find the correct sequence. If these methods fail, consulting a locksmith may be necessary for a professional opening.
Toll-free telephone number, office hours, mailing address, and email messaging are available on the website, www.masterlocks.com. Basically, there may be one of three ways to get the combination. One's sending the unattached lock to their office. The lock's sent back, with the combination. A second way's to send a photocopy of the back of an attached lock, and a notarized Lost Combination Form that can be printed from the site. The photocopy must be of such good quality that the office will have no trouble reading the serial number on the back of the lock. And third's contacting one of the website's customer service representatives when the customer and the lock are located outside the U.S. But perhaps the best step's first going to the site email, or telephoning, to check on current proper procedures.
How to reset the number??
sometimes
If it is a school locker go to the office they have the combination. If it is lock you bought look on the bottom or side sometimes there is a reset button. If there isn't look at the brand and see if you can call them on how to open it. All else fails you will have to cut it open.
i want to reset combination lock with new number while the padlock is locked
Yes
You don't. By definition a combination lock has no key, and thus there is nothing to "pick." Picking a lock refers to mimicking the role of a key in a lock. A combination lock has no key, and thus cannot be "picked."
A locksmith will be able to provide the combination from the code number stamped on the back of the lock.
Many combination locks have three numbers associated with them. A combination lock that has the middle spinner unlocks like this: Turn the dial to the left past the first number and then to that number the second time. Then turn the knob to the right to the second number. Finally turn the knob back to the left to the third number. This unlocks that type of combination lock.
To enhance the security of your home or office, you can rekey a lock by changing the internal pins and tumblers to create a new key combination. This process ensures that only those with the new key can access the lock, increasing security.
First of all, even though we call them "combination locks" they are not combination locks. In fact, there is no such thing as a "combination lock", that is if you pay homage to the actual, technical meaning of the word "combination". The word combination implies that order is irrelevant, which is not the case on a combination lock. The numbers for the "combination" have a particular order, and that order makes the difference between the lock opening or not. Just because you get the numbers correct doesn't mean the lock will open unless you get them in the right order, too. A combination lock is more appropriately called a permutation lock. Now, you want to know the number of permutations for a combination lock. This is a much more precise question. The next thing we need to know is whether or not repeats are allowed. In combination locks it is generally the case that repeats are allowed. One number does not effect the next number. Not only do the number of possibilities remain constant for each number, but which values they can possess also remains constant. Say for example we have a combination lock with three numbers to be set. Suppose that each of those can be the numbers 0 to 29. In this case, if the sequence 5, 6, 3 is distinct from 6, 3, 5, then we have a permutation lock. Not a combination lock. If the two sequences were the same, if both opened the lock... then its a true combination lock indeed. If the lock can open to 5, 5, 3 then repeats are allowed. This lock has 30 unique values for each number in the sequence: 0-29. And it has 3 numbers in the sequence. If repeats are allowed then there are 303 = 27,000 permutations. If repeats are not allowed then there are 30P3 = 24,360 permutations.
To unlock a Tripps case combination lock, first, ensure the lock is set to the default combination, usually 0-0-0. Rotate the dial several times to the right to reset it. Then, turn the dial to the right to the first number of your combination, followed by turning it left past the first number to the second number. Finally, turn the dial to the right again to the last number, and pull up the lock to open the case.