Allegion Schlage D Series, Manual

Page: 67 / 573

Terminology
Schlage • Primus service manual • 7
Terminology
Keyways
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.
Everest
Cylinders and keys which
incorporate all new keyways
with the patented undercut
groove on the right side of the
key section.
Everest 29 S Family refers to
the open family of keyways. R Family (for SFIC) and T Family
keyways are restricted.
Cylinder mechanisms
Conventional cylinders
Standard cylinders which
incorporate a series of
locking top pins.
Primus cylinders
Schlage’s high security
sidebar cylinder
mechanism provides
key control,
geographical
exclusivity, and pick
resistance, standard.
UL437 drill resistance
is optional. Primus keys
operate conventional
cylinders.
Key control
Restricted keyways
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 Restriced keys, blanks, and cylinders.
Open keyways
Standard keyways available without any ordering
formalities. S Family (Everest 29), C Family (Everest) and
Obverse (Classic) keyways are open.
Cylinder category
Full size
Pertaining to cylinders (including interchangeable cores),
keys, and keyways based on the industry standard plug
diameter of about
Z\x
”. All Schlage cylinders except SFIC are
full size.
Small format interchangeable core (SFIC)
A core providing patented key control that is completely
interchangeable with Best and its other clones, offered in
Everest 29 R, Everest B Family restricted keyways. No Primus
version exists.
Pins, springs, keys and keyways are based on a plug diameter
smaller than the standard
Z\x
”.
Full Size Examples
Full Size IC Key-in-Knob/Lever
SFIC Example
Undercut
Groove
Undercut
Groove
Conventional
Classic
Everest
& Everest 29
Primus
Classic,
Everest Primus,
& Everest 29
Primus