Glossary of Terms

The following table defines critical hardware terms relating to lock functions, lock trim, lock mechanisms, and additionally related functions, features, and practices.

LOCK FUNCTIONS

ENTRY (SINGLE CYLINDER)
This is a locking set with operable handles that has a keyed cylinder on the exterior side of the door and a turn piece on the interior side (typically used on primary exterior doors).

ENTRY (DOUBLE CYLINDER)
This is a locking set with operable handles that has a keyed cylinder on both sides of the door (typically used on primary exterior doors).

DUMMY − SINGLE
This is a set with an inoperable handle on one side of the door (typically in conjunction with roller catches, flush bolts or surface bolts).

DUMMY − FULL
This is a set with inoperable handles on both sides of the door (typically in conjunction with roller catches, flush bolts or surface bolts).

PASSAGE
This is a non-locking set with operable handles (typically used on doors that do not require security or privacy such as closets, laundry or utility rooms, pantry, mechanical rooms and so on).

PATIO
This is a locking set with operable handles that is locked by a turn piece from the interior side, but has no keyed access from the exterior (typically used on secondary exterior doors).

PRIVACY (MORTISE BOLT OR MORTISE LOCK)
This is a locking set with operable handles that is locked by a turn piece from the interior side and can be unlocked by an emergency release key from the exterior side (typically used on bedroom and bathroom doors).

PRIVACY (SPRING LATCH)
This is a locking set with operable handles that is locked by a push button on the escutcheon from the interior side of the door and can be unlocked by an emergency release key from the exterior side (typically used on bedroom and bathroom doors).

PUSH / PULL
This is a set with inoperable grip handles and/or escutcheons. The set can have locking capacity in single cylinder, double cylinder or patio applications and is available in full or single dummy as well (typically used for commercial applications).