why use interchangeable core

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The ND85/AL85/A85 hotel lock is only available in a conventional Key-in-Lever cylinder.  Interchangeable core and Primus are not available with this function. 
A Primus Hotel cylinder (as well as an IC hotel cylinder) is not possible because there isn't enough room inside the cylinder for all of the required components. 
This only applies to the full size interchangeable cores.  The SFIC mortise cylinders have part numbers for housings with construction cores (Disposable and Keyed).  Simply add (-ICX) to the end o...
A zero bitted Falcon SFIC core is combinated for the control key to be cut at all 4's.
 DESCRIPTION PART NUMBER   Conventional Core  23-030  Conventional Core less logo  23-031  Primus Core  20-740  Primus XP Core  20-740-XP  Primus Core less logo  20-741 ...
The Schlage Full Size IC core is 6 pin only. 
For all Schlage and Falcon small format interchangeable cores shipped from the factory 0-bitted, the control key will be cut to all 4's.
The AL lock can not be ordered to accept any competitor full size core.  The ND lock should be used in these applications.
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...
Schlage offers a comparable cam to the Yale 2160 and it will operate any Yale lock that utilizes the Yale 2160 cam.     Schlage Cams for Yale 2160  Part Number  Description  B520-7...
Refer to Table 1 for a list of T lock tailpieces for conventional cylinders.  Table 2 shows IC tailpieces. Table 1: T lock conventional tailpieces Table 2: T lock IC tailpieces
Conventional Cylinders - A conventional cylinder is one that requires some breakdown of the lock in order to be removed. These are the most commonly used cylinders sometimes called key-in-lever...
The B series accepts 6 or 7 pin small format cores when specifying with the "BD" cylinder suffix (less small format interchangeable core).  The tailpiece shown below is used for bo...
The Schlage L-Series uses a clover leaf cam with the exception of the L9060 outside cylinder which uses a straight cam. The cam part number will depend on the type of mortise cylinder, keyway (for ...
The Monarch KIL trim uses the following cylinders: Schlage Cylinders 23-013 Conventional 20-750 Primus 20-750-XP Primus XP 20-550 Primus UL437 20-550-XP Primus UL437 XP Falcon Cylinder A23165-0...
1 1/8" mortise cylinders fit the 650 series keyswitch.  The 650 series keyswitch when ordered with the cylinder, will come complete with the correct cylinder, cam, and any required blocki...
If blocking rings (PN 36-079) are needed, specify dimensions when ordering. See below for blocking ring (PN 36-079) dimensions.  Blocking Ring  Specify Dimension  1//8" ...