which schlage keyways are interchangeable

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Falcon D series deadbolts will not accept Schlage Key-in-lever cylinders. The faceplate plug hole is smaller in diameter than the Schlage plug and does not fit flush when i...
For a Schlage "C"  keyway:  Specify "CP6" as the cylinder suffix when ordering  D100 or D200 locks (All other Schlage keyways are not available).
ILCO is a manufacturer that uses SC as a designation to represent Schlage keys.  ILCO is not affiliated with Schlage so a key with an SC designation was never manufactured by Schlage. The followin...
Schlage only offers a limited number of keyways that match the BEST sections. Available in keys and cores.Specify keyway using the B suffix: AB = A, BB=B, CB=C, DB = D, DDB=DD, EB = E, FB = F, GB =...
Schlage changed to the Everest 29 default keyway on March 4th, 2013. At that time, Everest 29 S123 became the default keyway for all Schlage locks. Everest product is still available but must be sp...
Part number 80-037 is the combinated Schlage Everest small format interchangeable core and is available in the restricted Everest B Family keyways. Part number 80-036 is an uncombinated version.
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...
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...
Schlage Everest B keyways are restricted SFIC keyways.