Vintage Locksmith Tw Drawer Pin Box

Learn different lock part names along with the components of a lock, notice out what each part does.

This glossary of locksmith terminology put together past the Principal Locksmiths Association will help you lot with your security requirements.

Confused About Type of Locks?

To place what type of door lock you have click hither our guide covers the main types of locks used in the dwelling house.

Terms On This Page

Many of these terms are used on the training courses we run, so if you're looking to change career and thinking of becoming a  locksmith this guide of locksmith related terms is essential reading.

A B C D E F H J M Fifty G N O P R S T West

A

Anti-thrust bolt A spring bolt, for a night latch especially, which cannot exist pushed dorsum when it has shot out and fastened a door, although it can be withdrawn past knob or key. This security device is usually achieved past a canis familiaris inside the latch case which falls backside the bolt and keeps information technology shot out when an auxiliary slide is pushed in.

Anti-thrust plate An overlapping metal plate fitted to outward opening doors so as to prevent access to lock bolts. Automatic deadlatch A deadlatch, the primary bolt of which is automatically locked (or deadlocked) when the door is airtight.

B

Backplate The plate, stock-still on a door, to which the moving parts of a lock or latch are fastened. Backset The horizontal distance from the outside face of the outer forend to the centre of the keyhole or follower hole (or both). Designated as the "keyhole backset" or "follower backset".

Butt Bolt The common kind of door bolt having a circular shoot running in a long continuous guide or strap fastened past the backplate, the shoot being provided with a knob or the equivalent for performance by paw.

Birmingham Bar A steel bar fitted to the within face of a door frame on the hinge side.

Blank (key) or key blank A partly made key, which has been shaped to enter the keyhole of a certain type of lock or latch, just of which the bract has non been finally notched to operate any private lock.

Commodities The part of a lock or latch which provides the fastening or engagement by protruding from the case or forend to engage in the staple, hit plate, link, shackle or other members.

Bow (of a key) That part of the key which is held in the fingers when operating the lock or latch.

BS – British Standard Specification Authorised and issued by the British Standards Institute, the accustomed UK dominance for all standards of performance, tests and manufacture.

BS3621 The British Standard specification for Thief Resistant Locks for hinged doors. Locks submitted for certification must satisfy the requirements of the x stringent clauses of the specification.

Infiltrator Bars Steel bars, usually round or foursquare in profile, cut to length and fixed internally to window frames.

C

Cabinet lock A generic term to include all locks of any blazon for use on pieces of furniture, such as cupboards, drawers, chests, boxes and the similar.

Cam Usually a tongue fixed to the finish of the plug of a cylinder lock or latch.

Cam lock A complete locking assembly in the form of a cylinder whose cam is the actual locking bolt.

Cap (of the lock) The removable cover to a lock mechanism.

Casement Door A hinged door or pair of doors almost wholly glazed; often chosen a French Window.

Casement Window A window in which one or more lights are hinged to open.

Centres The vertical measurement in an upright or sash lock betwixt the centre of the keyhole and the heart of the follower pigsty.

Circlip A ring with open up ends which tin can be sprung into place on a plug or other role to permit rotation but to prevent endways move.

Airtight shackle padlock A padlock, the body of which is built up and then that the minimum amount of shackle is visible when locked. It offers improved security confronting forcing or use of bolt-croppers.

Combination Lock An abbreviation of a proper noun for a keyless combination lock. Cut cabinet lock A cupboard or drawer lock, the flange of which is recessed into the edge of the drawer or door.

Cylinder Usually the cylinder with an inner co-axial plug which houses the pins, top pins (drivers), or disc tumblers and springs in the cylinder body.

Cylinder housing With all component parts removed, this forms the main body or housing of a cylinder.

Cylinder key A cardinal, having a bow and long blade in which "V" cuts are made along the upper edge to operate the pins and drivers in a pin tumbler mechanism.

Cylinder lock or latch Any lock or latch, the machinery of which is contained in a cylinder.

Cylinder rose (or ring) A shaped metal disc which surrounds the outer confront of the cylinder of a cylinder mechanism assembly. It normally stands slightly proud of the outside confront of the door.

D

Deadbolt The square-ended bolt of a lock which is moved in both the locking and unlocking directions by the key (but occasionally by thumb plough within but) to provide fastening. Northward.B. For obvious reasons, it is inadvisable to comprise the thumb turn with the deadbolt of whatever deadlock or lock which is supposed to offering good security, if used on glass or wood panelled doors.

Deadlatch A nightlatch or latch, the springbolt of which can exist locked (or deadlocked) by central or other ways.

Deadlock A lock having just a foursquare-ended deadbolt operable from 1 or both sides by cardinal, and occasionally from outside but by key, inside by thumb turn. Sometimes operable merely from outside and with no inside keyhole, which is designated a single-entry deadlock.

Detainer 1. A generic term, non widely used, for any part such as a lever or tumbler which keeps a lock bolt in position 2. The name of the sliding security members in Butter'due south Organization locks.

Differs An abbreviation of "different combinations" or changes.

Disc tumblers The small shaped discs (usually of metallic) in the disc tumbler machinery which are the means of providing unlike combinations.

Disc tumbler lock A cylinder lock having disc instead of pin tumblers.

Door Closer A device for closing a door or gate automatically after opening. There are numerous types available.

Door viewer Optical device fitted through a door to enable ascertainment without opening the door.

Double Bitted Key One with a fleck on each side of the shank.

Double-handed lock 1. A lock designed for use either as a right or left-hand installation without alteration, generally by turning upside downward. The keyhole has a circular formation at each end of the slot to take the shank of the fundamental. ii. A cupboard lock, the bolt of which can be shot either manner to protrude from either side of the case.

Due east

Escutcheon The cover for the keyhole of a mortice or similar lock.

F

Confront plate The outer of a double forend. A strip of metallic fixed to the inner forend, thus forming a double forend.

Last get out door The get out door through which entry must later be obtained, and so cannot be bolted. Information technology is ordinarily the front entrance door or final ways of exiting.

Flush Bolt A door bolt which can be recessed affluent into the edge or face of a door.

Forend That function of the lock or latch through which the bolt(due south) protrude, and by which the lock or latch is fixed to the door.

Furniture The additional items needed, which are screwed to one or both sides of the door to enable a lock or latch to be manually operated. Known equally door furniture, lock or latch furniture, locksets or latchsets (when complete with lock or latch) and tin be either knob, lever handle, pull handle or button.

H

Hasp and staple A fastening in 2 pieces for a door or box to be secured by a padlock. The hinged role is called the hasp which is fitted to the door or lid of a box and shuts over the staple, which is on the door frame (or other leaf of a pair of doors) or the body of the box. For real security it is essential to use a hasp and staple with concealed fixing, i.due east. the heads of the fixing screws are completely covered when the padlock is locked in position, as otherwise the fitment tin can easily be removed by withdrawing the screws affording naught security.

Hinge Bolts Fixed steel protrusions fitted into the rear edge or hinge side of doors, closing into holes cut into the door frame, to protect from a forced assail on the hinge side of the door.

Claw commodities A pivoted spring-bolt, the head of which is shaped in the class of a hook. Such locks or latches are usually stock-still on sliding doors.

J

Jamb The vertical member of a door or window frame. In some areas, the top rail of a door frame is referred to as the top jamb.

K

Key A small removable device for operating the mechanism of its own lock, locking latch or nightlatch.

Key blank A partly-made key, which has been shaped to enter the keyhole of a certain blazon of lock or latch, but of which the bract has not been finally shaped (i.east. notched or bitted) to operate the mechanism of the lock.

Keyhole The hole into which the key enters to operate the lock or latch. It is often referred to equally the keyway, particularly in a cylinder mechanism.

Key Steps or key depths this term usually means the bolt step and lever steps of a primal for a lever lock.

L

Latch The type of production with one commodities merely, the bevelled springbolt or roller bolt, to latch or spike the door, but non capable of being locked. Sure types, e.grand. locking latches, nightlatches, or deadlatches, can, even so, be locked by fundamental or other means.

Lever A flat shaped movable detainer in a lock, commonly for the purpose of providing security and differs. The lever(s) in a lock have to be actually moved by the central to operate the lock. The belly of the lever is cut away to various depths to provide different combinations.

Lever mechanism A lock mechanism having, every bit its principle feature, one or more levers.

Lever and warded machinery The lever mechanism with the improver of wards, unremarkably for providing a greater number of differs. The addition of wards does not, however, increase the security of a lock. Encounter "Wards".

Lever handle A piece of lock or latch piece of furniture, commonly on a rose or plate, for utilise every bit an alternative to a knob for operating the springbolt of a lock or latch. All British lever handles are jump-loaded to ensure the return to horizontal after use, but Continental lever handles are not usually spring-loaded and thus when used with British locks or latches, sometimes tend to sag below the horizontal after a insufficiently curt period of utilise, unless additional springing is included in the lock action.

Lock A device operated usually, but non always, by a key, having one or more bolts or other members to fasten and secure a door, lid, drawer or other fellow member.

Lockable commodities A bolt that tin be shot and locked in position by the use of a removable key.

Locking latch A latch with a bevelled springbolt or roller bolt which is capable of being locked or secured, commonly by central.

Lockset A lock complete with necessary article of furniture including a spindle, ready for fixing to the door.

Lockset furniture or lock piece of furniture A lockset, minus the lock.

London strip A steel bar fitted to the inside face of a door frame, shaped to accommodate the staple or striker of a rim latch lock.

Long shackle (LS) A padlock shackle with a greater amount of clearance than the normal standard shackle.

Lubrication On no account should oil be used to lubricate pin-tumbler cylinders. Graphite is the conventional lubricant for this mechanism.

Thousand

Master Key A key which will open up every lock in a master keyed suite.

Master Keyed (locks or latches) A lock or latch capable of being operated also by a master key also as its own change or retainer key.

Mortice A hole cut into the thickness of 1 edge of a door to receive a mortice lock or latch.

Mortice Key A key to operate a lever lock, consisting of a bow, shank and bit.

Mortice lock (or latch) A lock or latch which is morticed or let into the thickness of the door from the coming together edge and held in position by screws through the forend.

N

Nightlatch A rim or mortice latch with a bevelled springbolt or roller bolt which shoots when the door is closed, but can be withdrawn by fundamental from outside and by knob or lever handle from within. Usually provided with a cease knob, slide or snib to agree the bolt retracted and to deadlock the commodities when shot in the closed position, fifty-fifty confronting the activity of the key.

O

One-sided lock (unmarried-entry) A lock which has a keyhole on i side only, so that information technology tin can be operated by primal from one side simply, unremarkably outside, simply not from both. Nearly all cabinet locks and all padlocks are examples. Some high quality cylinder mortice locks are one-sided.

One-mode action An activity where the follower will plough only one mode.

P

Padlock A insufficiently small removable and portable locking device, usually but not always cardinal operated on one side only. The locking member is a circular hinged sliding or swivelled shackle which passes through a hole in a staple, locking bar or similar fellow member.

Panel grilles Steel grilles fabricated to size with various infills of expanded diamond mesh, square weld mesh or fancy infills, usually fitted internally.

Pin tumbler mechanism The mechanism incorporated in the cylinder or body of a cylinder pin tumbler lock, latch or padlock, usually referred to as a cylinder lock, latch or padlock.

Other than padlocks, the cylinder with its co-axial plug housing the pins and drivers under bound force per unit area passes through the thickness of the door, and the correct primal lines up the pins and drivers to make a articulate line of intersection between plug and cylinder, thus allowing the plug to rotate and the lock to be operated.

The machinery offers high security confronting key interchangeability and anti-selection mushroom drivers are usually included in every cylinder. For instance, Yale v pin cylinders offer up to 24,000 differs as standard.

Information technology is besides very suitable for master keying, as many different types of locks or latches can be included in the suite.

Under master cardinal, 12,200 differs are obtainable and nether one thousand principal fundamental, 36 different sub-suites with up to a full of 2,200 differs can exist provided.

Plug The part of the pin-tumbler cylinder machinery or disc tumbler cylinder mechanism into which the key enters and which the central turns. It houses the pins of a pin tumbler cylinder mechanism or the discs and springs of a disc tumbler cylinder mechanism.

R

Rack Bolt A bolt, usually a door bolt, which is toothed and so that it may exist operated by a pinion.

Rebate The measurement of the stepped reduction or recess in the forend of a rebated lock.

Rebated (lock or latch) A mortice lock or latch with a forend specially shaped to correspond with the shaped meeting edge of the door for which it is intended. See "Total Rebated".

Release A striker in various forms to replace the lock strike and is operated electronically.

Rigid grilles Heavy duty, welded structure, rod or bar grilles, unremarkably fitted externally or internally to the textile of a building.

Rim Cylinder This relates to a pack which usually comprises the cylinder with plug, rose, connecting bar, ii connecting screws and ii keys.

Rim lock or latch A lock or latch that is fitted by screwing on to the inside face of the door.

Rose 1. A cylinder rose or ring in cylinder locks or latches. Information technology is a shaped metal disc which surrounds the outer face of the cylinder ii. In door furniture, it is the small plate to which the lever handle or knob is affixed and which is screwed to the door surface.

S

Prophylactic Lock A full general term for the many varieties of key operated and other locks for safes.

Sash lock An upright mortice lock, consisting of a latch bolt and a cardinal operated commodities.

Sash ward Used in rim and mortice locks, alone or in conjunction with levers for the purpose of obtaining or increasing the differs. Formed pieces of concentric metallic are affixed around the inside of the keyhole.

It also serves as a keyhole bush. The bitted fundamental passes over these wards to operate the commodities.   Piddling security is given when sash wards are used by themselves. Run into "Skeleton Keys".

Shackle The hinged, sliding or swivelling loop shaped member of a padlock. The heel of the shackle remains e'er in the padlock body and the toe of the shackle comes out when unlocked.

A double locking padlock gives the greatest security confronting forcing because at that place are two split bolts locking outwards in opposite directions, one into a niche in the heel of the shackle, and the other into the toe of the shackle.

This is sometimes called heel and toe locking.

Shear Line The term is used to denote the line of the circumference of the plug in the bore of a pivot tumbler cylinder.

Shoot 1. The outward movement of a lock bolt and the distance which it travels nether the activeness of a spring or central. Shoot applies more peculiarly to spring bolts, throw beingness a improve word for dead bolts. two. The sliding part of a door commodities.

Shoot (of bolt) The distance a springbolt moves nether the activity of its spring.

Side Bar This is in addition to the existing pin or disc mechanism, and is a bar usually along the length of the mechanism and does non allow rotation until the mechanism is correctly lifted and can be directly controlled by the key.

Side Wards Notches cut into the sides of bitted keys so fashioned to enable the cardinal to turn.

Sliding grilles Steel sliding grille gates in unmarried or double foliage, running on height and lesser guide tracks, locked by padlock or integral lock.

Sliding Lever A lever which slides between or on guides instead of swinging on a pin..

Spindle That part of the door furniture unremarkably of square section which passes through the follower hole and is fitted to the knob(s) or lever handle(s) to operate the springbolt.

Spring shackle padlock A padlock, the shackle of which springs open when unlocked, and is locked by snapping to.

Springbolt Sometimes called the latchbolt. A bolt having the outer edge shaped by bevelling of the vertical face. It is a commodities which may be pushed back into the lock-instance and volition return to the extended position without mechanical aid.

Staple 1. A box-like fitting on the jamb of an inwards opening door, and into which the bolt or bolts of a rim latch or lock shoot when door is closed. (It is sometimes referred to in Scotland and the North of England equally a Bosshead). Some staples are lipped to act as a guide for the springbolt.

2. Part of a hasp and staple for utilise with a padlock. The padlock shackle passes through the middle or hole in the staple.

Stop knob (snib) A device incorporated in some latches and locking latches to hold the bolt retracted or deadlock the bolt when door is airtight.

Striking plate Sometimes referred to equally a "striker". It is a shaped flat metal plate fixed to the door frame or jamb with ane or more bolt holes into which the bolt or bolts shoot. In that location is a shaped projecting lip on ane side to guide the springbolt. It is used with all mortice locks or latches, and with rim locks or latches with reversed springbolt on an outward opening door.

Suite (of locks) A group or collection of locks and/or locking latches and padlocks of different types and changes incorporated together under a principal primal or yard primary fundamental.

T

Thumb plow A small plumbing equipment, on the inside of a mortice lock, which is gripped betwixt thumb and finger to operate the deadbolt. It should not be used on drinking glass- or wood-panelled doors.

Tie bars The horizontal members of a vertical bar grille.

Fourth dimension Lock A clockwork or electrical timing device which disallows functioning of a lock or the opening of a door on safes or strongrooms.

W

Wards Fixed obstructions inside a lock case to preclude the use of the incorrect fundamental, every bit the cardinal is cut to pass over the wards and operate the lock. They are sometimes used in lever locks to requite increased differs. Wards alone give very little security. See "Skeleton Fundamental".

Warded lock Any lock or padlock, the machinery of which makes apply only of wards. Non recommended, due to the lack of security.

---

Hopefully, the above glossary will be of aid but don't forget; your first port of telephone call for security advice should exist your MLA Licensed Locksmith in your area

morganwhirds.blogspot.com

Source: https://www.locksmiths.co.uk/locksmith-terminology-parts-of-locks/

Share this post