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Glossary of Terms

EAC

(abb.) Electronic Access Control
Source: Lock Industry Standards and Training (LIST) Council

Edge Bore

(n.) A hole drilled into the edge of a door where a bored or interconnected lockset is to be installed.
Source: Lock Industry Standards and Training (LIST) Council

Edge Pull

(n.) A handle mounted on, or in, the edge of a sliding or pocket door for gripping to pull the door closed.
Source: Lock Industry Standards and Training (LIST) Council

Educational Occupancy

(n.) Those buildings or areas which are designated as places for education purposes according to life safety or building codes.
Source: Lock Industry Standards and Training (LIST) Council

Effective Plug Diameter

(n.) The dimension obtained by adding the root depth of a key cut to the length of its corresponding bottom pin which establishes a perfect shear line. This will not necessarily be the same as the actual plug diameter.
Source: Lock Industry Standards and Training (LIST) Council

Effective Throw

(n.) The distance a deadlatch remains projected when the guard bolt has been engaged and end pressure is applied to the latch.
Source: Lock Industry Standards and Training (LIST) Council

EIA

(abb.) Electronics Industry Association
Source: Lock Industry Standards and Training (LIST) Council

Ejector Hole

(n.) A hole found on the bottom of certain interchangeable cores under each pin chamber. It provides a path for the ejector pin.
Source: Lock Industry Standards and Training (LIST) Council

Ejector Pin

(n.) A tool used to drive all the elements of a pin chamber out of certain interchangeable cores.
Source: Lock Industry Standards and Training (LIST) Council

Elbow Catch

(n.) An "L" shaped latching mechanism typically mounted to the inside of the inactive leaf of a pair of cabinet doors.
Source: Lock Industry Standards and Training (LIST) Council

Electric Strike

(n.) An electro-mechanical strike, which secures or releases the latch via applied current.
Source: Lock Industry Standards and Training (LIST) Council

Electrified Lockset

(n.) A lock which is controlled electrically.
Source: Lock Industry Standards and Training (LIST) Council

Electronic Access Control

(n.) Access control that uses electricity.
Source: Lock Industry Standards and Training (LIST) Council

Emergency Code

(n.) In an electronic lock, a factory-set or user-set code or combination that will open the lock a predetermined number of times.
Source: Lock Industry Standards and Training (LIST) Council

Emergency Key

(n.) The key which operates a privacy function lockset.
Source: Lock Industry Standards and Training (LIST) Council

Emergency Master Key

(n.) A special master key which usually operates all guestroom locks in a hotel master key system at all times, even in the shut out mode. This key may also act as a shut out key.
Source: Lock Industry Standards and Training (LIST) Council

EMK

(abb.) Emergency Master Key
Source: Lock Industry Standards and Training (LIST) Council

End Cap

(n.) The cover typically used on the hinge side edge of many touch bar exit devices.
Source: Lock Industry Standards and Training (LIST) Council

End Ward

(n.) A ward which prevents complete insertion and/or rotation of an incorrect key by forming an obstruction to the end of the key.
Source: Lock Industry Standards and Training (LIST) Council

End Ward Cut

(n.) Any cut made into a key to bypass an end ward.
Source: Lock Industry Standards and Training (LIST) Council

ENG

(abb.) Engineer's Key
Source: Lock Industry Standards and Training (LIST) Council

Engineer's Key

(n.) A selective master key which is used by maintenance personnel to operate many locks under different master keys in a system of three or more levels of keying.
Source: Lock Industry Standards and Training (LIST) Council

Entrapment Key

(n.) A key designed to be captured by a cylinder after insertion.
Source: Lock Industry Standards and Training (LIST) Council

Entry/Exit Delay

(n.) An alarm or access control feature which allows a specific time lapse between the activation of a switch and the activation of a secondary component.
Source: Lock Industry Standards and Training (LIST) Council

ERD

(abb.) External Relocking Device
Source: Lock Industry Standards and Training (LIST) Council

Escutcheon

(n.) A surface mounted trim which enhances the appearance and/or security of a lock installation.
Source: Lock Industry Standards and Training (LIST) Council

Espagnolette

(n.) A top and bottom locking system with hooks at either end which rotate to draw a door or window fully closed.
Source: Lock Industry Standards and Training (LIST) Council

Exit Alarm

(n.) An annunciator that signals the opening of an exit door.
Source: Lock Industry Standards and Training (LIST) Council

Exit Device

(n.) A door lock/latch mechanism which releases in the direction of exit travel via a bar or panel extending across the major width of the door.
Source: Lock Industry Standards and Training (LIST) Council

Exit Door

(n.) 1. A door which has no provision for ingress.
(n.) 2. A door which fills some or all the code requirement for safe egress of the occupant load from a building or portion of a building.
Source: Lock Industry Standards and Training (LIST) Council

Exit Only

(adj.) Refers to hardware designed to secure an opening in such a way as to permit exit at all times but prevent entry at all times.
Source: Lock Industry Standards and Training (LIST) Council

Exit Travel, Direction Of

(n.) The way occupants are expected to move to get out of a building or a portion of a building.
Source: Lock Industry Standards and Training (LIST) Council

Expansion Specification

(n.) A requirement for bittings to be planned beyond the immediate needs of a keying system.
Source: Lock Industry Standards and Training (LIST) Council

Extended Lip Strike

(n.) A strike with a (usually curved) leading edge that protrudes to or beyond the edge of the jamb.
Source: Lock Industry Standards and Training (LIST) Council

Extension Flush Bolt

(n.) A flush bolt that has a separate escutcheon and faceplate.
Source: Lock Industry Standards and Training (LIST) Council

Extension Link

(n.) A device which is used to extend the backset of a spring latch or dead latch.
Source: Lock Industry Standards and Training (LIST) Council

External Relocking Device

(n.) A device outside the lock case that prevents the safe door from being opened after attack, two types are typically used, active and passive.
Source: Lock Industry Standards and Training (LIST) Council

Extractor Key

(n.) A tool which normally removes a portion of a two-piece key or blocking device from a keyway.
Source: Lock Industry Standards and Training (LIST) Council