Split key systems are delivered in the highest level section on the key tip (insert):
L - obverse or classic
Y - reverse
0000 - Paracentric
ZZZZ - Quad
D000 - restricted Everest
C000 - open...
With split key construction keying there are two ways the construction insert is retained in the cylinder so that it won't fall out the back end of the plug, see Figure 1.
The&nb...
It is not possible to key SFIC and standard cylinders including Schlage FSIC into the same system. A keyway name may be shared between the two key fami...