Schlage Cylinder Terminology; Keyways; Cylinder Mechanisms; Key Control - Schlage CYLINDERS Brochure & Specs

Schlage Cylinder Terminology

Over the last few years Schlage has introduced a varietyof new keyways
and cylinder types. This chart illustrates our cylinder terms and how they are
related. The definitions below provide additional information.
Cylinder Category
Full Size Cylinders
and Cores
Small Format
(Best Style)
Interchangeable Core
Cylinders and keys which incorporate all new
keyways with the patented undercut groove on the
right side of the key section. C Family is the name
of the open family of keyways. B Family (for SFIC) and
D Family keyways are restricted.
SchlageÕs high security sidebar cylinder mechanism.
Patented key control, geographical exclusivity, and
pick resistance are standard. UL437 drill resistance
isoptional. Primus keys operate conventional
cylinders.
Special non-stock keyways set aside for limited use
and a higher degree of key control. A letter of
authorization from the end user is required to
process orders for keys, blanks and cylinders.
Small Format Interchangeable Core (SFIC)
A core completely interchangeable with Best, Falcon,
etc. No Primus version exists. Pins, springs, keys and
keyways are based on a plug diameter smaller than the
standard 1/2ý.
C Y L I N D E R S , K E Y S A N D K E Y C O N T R O L
Mechanism

Key Control

Adds Patented
Restricted
High Security &
Duplication
Geographical
Exclusivity
Open Keyways
Open and
Conventional
Restricted
(Non-Primus)

Keyways

Open and
Conventional
Restricted
(Non-Primus)
Keyways
Keyways
Everest

Cylinder Mechanisms

Primus Cylinders
Key Control
Restricted Keyways
Cylinder Category
Keyways
Even to
Levels 7 - 9
Conventional
Conventional
Classic
Schlage pin tumbler keyways which existed before
Everest keyways. Obverse is the name of the open
family of keyways (C, E, etc.) and there are three
other families of restricted keyways: Reverse, Numbered
and Quad.
Conventional Cylinders
Normal, standard cylinders.
Open Keyways
Standard keyways available without any ordering
formalities. C Family (Everest Conventional) and
Obverse (Classic Conventional) keyways are open.
All others are restricted.
Full Size
Pertaining to cylinders (including interchangeable cores),
keys and keyways based on the industrystandard plug
diameter of about 1/2ý.
Keyway Type
Patented
Undercut
CLASSIC
Groove
Keyways
Everest Classic
Primus Primus
Levels 1 - 4
Classic
Everest
Conventional
Everest Best
Compatible
®
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