i'm not a locksmith or anything but i find about 5 pins are found on your average pin tumbler.
i would advise you to find out how locks work, it took me a long time to learn how to pick a lock
i tried for about a 5days without knowing how a lock works (not knowing exactly)-----then i decided to find out about the inside of a lock.........then i picked a lock the same day
finding out how a lock works is something you NEED! to know to understand how picking works properly
i am trying to find out about all types of locks i can find
you can find information on the internet on.....
http://jugglingwithfire.co.uk/management/picking/picking.htm
(and many more sites)
or you can take a lock appart? it's up to you