what do the numbers on a key mean?

Answer 1

I worked in a retail store and made keys occasionally. They are codes to help you pick out the right "blank" before cutting and making a duplicate key.

Answer 2

The numbers are the size pins that are in the cylinder.
To make a duplicate.all he needs is the key.....no numbers.
NOW if u want another "lock" keyed the same as the front door to put on the back door,the locksmith would use the numbers on the key to fit the right pins in the cylinder.

Answer 3

Many keys have a numbered code on them.
Some locksmiths can cut a key based on that number.
You can also (sometimes) find several locks with the same numbered key if you search the bin/shelf instead of paying extra for 'keyed alike' lock sets.

Answer 4

if it is a 5 or 6 digit number, the numbers represent the pins from a keying kit for various locks, by manufacturer, not all locks use the same pins.a number 3 top pin from a Kwikset may not be the same as a Schlage. if it has letters and numbers it is the blank number, like KW1 is for Kwikset 5 pin lock, KW10 is for Kwikset 6 pin lock.

Answer 5

Manufacturer keying code for duplication.

Answer 6

I think its the code that the locksmith uses to make a copy.

Answer 7

reference so that a new key can be cut.......