Best SFIC Lock Cylinder
Best SFIC mortise lock cylinder.
"Small Format Interchangeable Core (SFIC)" locks, first
made by Best Access Systems, are popular with medium- and
large- scale institutional lock users in the US. These
locks offer moderate resistance against manipulation
and forceful attack, support large master key systems,
are of good general quality, and are available for a
wide range of lock configurations. The most important
feature of these cylinders, however, is the ease with which
the end-user can manage them. A special
control key unlocks and allows removal
from the front of the lock of the core, which contains
the keyway and pins. New cores can be swapped in and out
in a few seconds as required, without the need for tools
or special locksmithing skills. Most users keep on hand
a supply of extra cores that are rotated through to support
SFIC locks come in six and seven pin versions and can use
the same keys for either (they are "tip stopped," so the
keys for six pin locks stick out of the keyway a bit
further). About 25 different keyways are commonly used;
the lock shown here is for the "L" keyway. Pins for
SFIC locks are slightly smaller than those used in
conventional cylinders, and tolerances are comparatively
tight. A variety of depth systems are used, supporting
up to 10 distinct bitting heights per pin position with
no MACS restriction. This allows up to 10,000,000
distinct keys per keyway (although there are effectively
fewer in practice, due to tolerance errors and phantom
keys in master systems).
Image taken with a Nikon D-100 digital camera with a Nikkor
85mm 1:2.8D tilt/shift macro lens (with Kenko extension tube).
Lit by electronic flash and various reflectors.
Copyright © 2003 by Matt Blaze. All rights reserved.
You may not copy, modify or use this image for any commercial or
non-commercial purpose without permission.
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