'Backset' is the distance from the front of the lock to the centre of the spindle as shown here. ... Almost ALL domestic mortice locks and tubular latches are supplied with either a 44mm or 57mm backset length. These equate to case sizes of 2.1/2" or 3" in imperial measurements. Commercial (DIN) lockcases are 60mm backset.

What does lock backset mean?

The backset is the distance from the edge of the door to the spindle mechanism on the latch. Usually for a 63mm case measurement it will have a 44mm backset and for a 76mm case measurement will have a 65mm backset.

How do you measure the backset on a mortice lock?

You can measure the mortice locks by measuring the backset and the centre. It is also advised you measure the case width and height and the forend length and width. Backset – The backset is measured through measuring from the centre of the keyhole to the forend of the mortice lock.

What is the backset size on a lock?

The backset is the horizontal distance from the edge of a door to the centre of a lockset; thus, the distance a lockset is 'set back' from the edge of a door is called its backset. It's usually 1 inches or 2 inches (or 44mm and 57mm).

What backset should I use?

If you dont have any hardware on your door, just measure from the edge of the door to the center of the bore hole (the large hole where the door knob assembly is mounted). ... The most common backset is 2 3/8″ but 2 3/4" is also quite common - usually used on exterior doors.

Euro Mortice Lock with different backset size & centers

What is the most common backset for a door?

In the United States, there are two common backsets for residential door locks: 2 3/8 inches and 2 3/4 inches. Pack your locks with a 2-3/8-inch or 2-3/4-inch latch, depending on which backset you specify.

What size backset do I need?

The backset size on a lock or latch case is the distance from the edge of the door to the centre of where the handle spindle passes through the door (or the key / turn where applicable), this is dimension 'X' below. For example, a 2 1/2 inch or 64mm latch has a backset size of 44mm and a total depth of 64mm.

How do I know what size lock I need?

Measure from the outside edge of the door (including furniture) to the centre of your door. This is dimension A and is called the External Size to Centre. Next, measure from the inside edge of your door (including furniture) to the centre of your door to find dimension B, the Internal Size to Centre.

What is a 5 point Mortice lock?

The five lever mortice deadlock is a type of door lock commonly fitted to wooden doors. It can be locked and unlocked with a key from both the inside and the outside. It works by inserting and turning the key to move the five levers into the correct position, allowing the bolt to be locked or unlocked.

What is a backset on a lock UK?

The backset measurement is the distance from the centre of the keyhole, to the leading edge of the lock. This is very important when replacing locks because you don't want to have to drill new holes if you can help it!

What is the case depth on a mortice lock?

Standard Case Depth sizes are 64mm (2.5") and 76mm (3") and standard Lock backset sizes are 44mm and 57mm, a 50mm case size is also available for doors with a narrow stile or aluminium doors.

What is the backset on a night latch?

The backset on a night latch is the distance from the centre of the keyhole to the edge of your door, you will find most night latches will have a 60mm backset.

How do you measure a backset hinge?

Hinge Backset

The distance from the edge of the applied hinge leaf to the frame stop. This is a critical measurement and must be accurate within 1/32′′. The most common dimension is 5/16′′. The hinge backset on the door will be properly adjusted from this measurement (typical – 1/16′′) to ensure proper clearance.

What is a bathroom Mortice lock?

They are generally used for the bathroom but can be used on any internal door to stop entrance. ... Bathroom locks do not have keys making locking and unlocking easy and fuss free.

What size cylinder do I need for a 44mm door?

A. The size of cylinder you need is determined by the thickness of the door and the type of handles you are using. For example: If you have a door that is 44mm thick and your handle back plate is 10mm deep, the total length needed is 64mm (44+10+10mm).

What is a mortise deadlock?

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How far should euro cylinder protrude?

How to fit a Euro Cylinder Lock correctly: The cylinder should not protrude more than 3mm from the handle. Ideally should be completely flush with no external overhang. The correct size of the cylinder is vital.

What does LOB mean on door handles?

LEVER ON BACKPLATE

LEVER LOCK: Backplate has a key hole, for use with a sash type lock which contains a lock and a bolt.

What is a lob lock?

The purpose of LOB locks is different from the purpose of regular transaction locks. A lock that is taken on a LOB value in a LOB table space is called a LOB lock . Introductory concepts. Large objects (LOBs) Large object data types.

What is a Deadlatch on a door?

“Deadlocking plunger” (also called “deadlatch plunger” or “deadlock plunger”) is the name of a very important piece of a door lock assembly; it keeps a locked door from being opened with a small screwdriver or credit card.

What is a 6 way latch?

The Kwikset 6-Way Plain Latch Service Kit is designed for use on interior doors, such as those for bathrooms and bedrooms, where a privacy locking function is desired. This latch will adjust 6 different ways to fit many standard door frames.

Why is my door handle drooping?

Droopy door handles is a fairly common problem but is usually quite easily rectified. ... 1 — The fixings have been overtightened causing the lever bearing to bind against the door face, or causing the door to compress the latch mechanism inside the mortice and stop it from operating correctly.