Glossary - S

safe lock (np)
lock for use on a safe

safety sensor (np)
(Product specific term - see prEN 12650)

safety system (np)
(Product specific term - see prEN 12650)

safety zone (np)
(Product specific term - see prEN 12650)

sail area (np) (of a door)
surface area of door leaf subject to wind pressure

sash (n)
sliding light of a sash window

sash balance (np)
(Product specific term - see CEN/TS 13126)

sash door (np)
door with a sash window in the upper part

sash fastener (np)
(Product specific term - see CEN/TS 13126)

sash handle (np)
handle used to operate a sash

sash lock (np)
alternative term for an upright mortice lock

sash ward (np)
ward in the form of a keyhole bush with concentric circular features

sash window (np)
window in which the opening lights are constrained to slide up and down by guides in the frame

Scandinavian oval (np)
mortice cylinder with oval cross-section housing, attached to the lockcase using bolt through fixings

scissor arm (adj)
having jointed arms

screen hinge (np)
double-jointed hinge that allows one leaf to swing a full 360° with respect to the other

screwed cylinder (np)
mortice cylinder with threaded housing

scroll spring (np)
flat strip spring with multiple turns

secondary closing edge (np)
(Product specific term - see PrEN 12650)

security (n)
protection from attack

security bolt (np)
bolt ² requiring the use of a key to enable it to be withdrawn

security cylinder (np)
cylinder with a high level of resistance to attack methods

security escutcheon (np)
(see "armoured rose")

security furniture (np)
door furniture with features to protect the lock and/or cylinder from physical attack (see also EN 1906)

selvage / selvedge (n)
outer face of forend on a flush fitting lock

servant key (np)
key that operates one particular lock in a master keyed suite

set of mortice latch furniture (np)
two door lever handles or knobs with two latchplates or roses, complete with spindle and fastening elements (see also EN 1906)

set of mortice lock furniture (np)
two door lever handles or knobs with two lockplates or alternatively roses and/or escutcheons, complete with spindle and fastening elements (see also EN 1906)

shackle (n)
external moving part of a padlock which forms the lockable link to another object (or other objects) (see also EN 12320)

shank (n)
(see "key shank")

shear line (n)
line representing the cylindrical surface of the plug in a pin tumbler cylinder

shearlock (n)
electromagnetic lock which uses magnetic attraction to prevent lateral movement of one component with respect to another

shoot ¹ (n)
outward movement of a bolt ¹, and the distance it travels (applicable mainly to latch bolts)

shoot ² (n)
alternative word for the moving part of a bolt ² where use of the word bolt ¹ would be confusing (see also EN 12051)

shutter (n)
element used to cover a window or door for protection purposes (see also prEN 14648)

shutter catch (np)
(Product specific term - see prEN 14648)

side bar (np)
element of a pin tumbler cylinder that only allows the plug to rotate when all the pin tumblers are correctly positioned

side hung projecting reversible hardware (np)
(Product specific term - see CEN/TS 13126)

side screen (np)
(Product specific term - see prEN 12650)

side ward (np)
notch cut into the side of a key bit

significant surface (np)
those parts of the surface of a product that are normally visible when the product is installed and which can be touched by a 20 mm (+1/-0 mm) diameter sphere, and those other surfaces on which a specified corrosion resistance is essential to ensure the continuance of correct function (see also EN 1670)

simple damping system (np)
(Product specific term - see WI 33/290)

simultaneous operation / sympathetic operation (np)
arrangement in which bi-parting sliding doors are constrained to move equally in opposite directions

single action door closer (np)
door closer for use on doors which open in one direction only, and close against a fixed stop (see also EN 1154)

single-axis hinge (np)
hinge in which all components rotate about a common axis

skeleton key (np)
lever lock key in which most of the key bit has been cut away leaving just enough to operate the lock

skylight (n)
top hung open out window in a roof

slam lock (np)
(see "automatic lock")

slide bolt (np)
supplementary bolt within a lock case operated by thumb/fingers from the inside only

slide channel / track arm (adj)
having one end of the control arm running in a track

slider (n)
linearly sliding form of detainer that is positioned by the key as it rotates

sliding door (np)
door with one or more leaves which move horizontally in their own plane (see also prEN 12650)

sliding door handle (np)
handle used to move sliding doors

sliding element (np)
(Product specific term - see CEN/TS 13126)

sliding lever (np)
(see "slider")

sliding shackle padlock (np)
padlock in which the staple recess is closed off by an axially sliding shackle

sliding stay (np)
stay consisting of a bar that slides telescopically inside another bar, or through a separate slide block attached to another arm

sliding swing (balanced) door (np)
(Product specific term - see prEN 12650)

smoke seal (np)
material between leaf and frame to prevent the passage of smoke

snib ¹ (n)
(see "locking snib")

snib ² (n)
(see "anti-thrust bolt")

snib bolt (np)
(see "anti-thrust bolt")

solenoid lock / solenoid operated lock (np)
lock using a solenoid to effect or enable locking and/or unlocking (see also prEN 14846)

special safety furniture (np)
(Product specific term - see EN 1906)

speed control (np)
means for adjusting the closing speed of the a door/window leaf (see also EN 1154)

spindle (n)
bar (usually of square cross-section) that transmits the rotational movement of lever handles/knobs on either or both sides of a door leaf to the follower of a latch (see also EN 1906)

spline key (np)
key in which the cross-section of the operating end is in the form of a toothed pinion

split follower / divided follower (np)
two-part follower that enables movement from handles/knobs on opposite side of a door leaf to be transmitted independently

spring bolt (np)
latch bolt operated by a spring

spring closer (np)
(see "uncontrolled door closing device")

spring hinge (np)
door hinge incorporating a spring mechanism to provide closing energy (see also WI 33/290)

spring latch (np)
latch with a single spring bolt

spring power (np)
energy which can be stored in the spring through the action of opening the door leaf

spring shackle padlock (np)
padlock with shackle that springs open when unlocked, and which closes without the use of a key

spring-assisted furniture (np)
lever handle furniture incorporating a spring mechanism to assist the return of the lever handle to the "at rest" position (see also EN 1906)

spring-loaded furniture (np)
lever handle furniture incorporating a spring mechanism to return the lever handle to the "at rest" position (see also EN 1906)

stand open (np)
(see "hold-open")

standard installation (np)
normal fitting or installation position of a product, as stated by the manufacturer (see also EN 1154)

staple ¹ (n)
part of the padlock fitting through which the padlock shackle is passed (now same as EN 12320)

staple ² (n)
(see "keep")

stay (n)
device for holding a leaf in a fixed position

stem (n)
(see "key shank")

step (n)
(see "key step" or "bolt step")

stile (n)
vertical member of a door leaf

stop butt hinge (np)
butt hinge with integral stop to restrict movement

stop knob (np)
(see "snib ¹ ")

storm lock (np)
(Product specific term - see prEN 12650)

straight cabinet lock / straight cupboard lock (np)
lock adapted to lie flat on inside face of cabinet or cupboard door

strap hinge (np)
butt hinge with two elongated tapered flaps

striker box (np)
(see "locking box")

striking plate / strike plate / striker (np/n)
component that engages and operates a latch bolt

strong key (np)
key made from stronger and/or harder materials than those used for standard keys

strong key attack (np)
attempt to force a lock using a strong key

sub-grand master key (np)
key which will operate all locks in a one level down sub-suite of a great grand master-keyed suite

sub-master key (np)
key which will operate all locks in a one level down sub-suite of a grand master-keyed suite

Suffolk latch (np)
thumb latch with fixed pull handle and pivoting bolt, the outer end of which rests in a keep

suite (of locks)
(see "master keyed suite")

suited (adj)
belonging to a master keyed suite

suiting (n)
(see "master keying")

supervised system (np)
(Product Specific term - see prEN 12650)

surface mounted door closer (np)
door closer mounted on the face of the door or door frame

swept area (np)
(Product specific term - see prEN 12650)

swing arm coordinator (np)
(Product specific term - see EN 1158)

swing bolt (np)
pivoting bolt which rotates from a fully extended position where it can engage a locking plate, to a fully retracted position inside the lock case

swing door (np)
hinged door with axis of rotation of leaf at or near one vertical edge (see also prEN 12650)