difference between SFIC & FSIC cylinders


There are several ways to spot differences, see Figure 1, but the easiest is to look at the face of each core. The face of both cores looks like a "figure 8".  With small format, bo...
A zero bitted Falcon SFIC core is combinated for the control key to be cut at all 4's.
The Schlage B and BD cylinder suffixes designate less small format interchangeable core (SFIC) cylinder prep for the lock. Any SFIC, 6-pin or 7-pin, can be inserted into the lock and will operate t...
The Schlage SFIC rim cylinder driver is part number B520-365, shown below.     Figure 1: SFIC Rim Cylinder Housing