Kwikset Rekeying Set Question

[xBMW M3 GTR]

I recently bought a Kwikset rekeying set. Im new to lock picking and lock smithing. (about 6 months into it, can pick some high security locks, suck at padlocks, can re-pin locks, and can master pin locks)

To cut to the point, what are PK pins (come in driver pins ands pool pins in my set) and what are PK balls (look like tiny ball bearings) What are they? When do I use them?

[shadow11612]

PK is Kwikset's "Protecto Keying" system. The PK pins and balls are used for construction keying. They are used like a master pin in the lock. The PK Pin is .160" vice the standard Kwikset .180 top pin. You put a PK pin and three balls in the one of the chambers. On a construction site, every house can have these done so the "construction master" key works every lock. Once the homeowner's change key is used for the first time, the balls will fall out of the cylinder and the construction key will not longer work in the lock.

[Poff]

I recently bought a Kwikset rekeying set. Im new to lock picking and lock smithing. (about 6 months into it, can pick some high security locks, suck at padlocks, can re-pin locks, and can master pin locks)

To cut to the point, what are PK pins (come in driver pins ands pool pins in my set) and what are PK balls (look like tiny ball bearings) What are they? When do I use them?

Kwikset talks about them in their rekeying manual: http://www.kwikset.com/Files/PDF/TradeR ... Manual.pdf

I have seen some good cutaway pictures that show how they work on the internet but I can not find them.

Sometimes when you pull out a plug you will find the three little balls in a cavity in the side of the plug next to the hole they were in. When the contractor uses their key the balls stay in the plug like a master pin. When the homeowners key, that is not cut as deep, is used the balls are pushed up past the shearline with the top pin and when the plug is rotated they fall (or actually the are forced by the top pin spring) into the little cavity.