What is meant by ‘Backset’? ‘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.
What does backset size 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. The backset you choose is where your door knobs will sit on the door (where the spindle goes through).
What is 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).
How do you measure a door backset?
The backset is the measurement from the edge of the door to the center of the bore hole. Most door handle sets feature a 2-3/8″ or 2-3/4″ backset. To determine the backset on your door, measure the distance from the outer edge of the door, to the center, or highest point of the bore hole.
How do I know what size door latch I need?
An easy way to choose which latch you need is to measure from the edge of your door to the centre of your door Stile. Choose the Backset which is closest to this measurement, and the handle will be as central as possible to the Stile on your door.
What is backset size on a mortice lock?
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 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.
What is standard backset for door knobs?
2 3/8"
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). Standard backsets are either a 2 3/8″ backset, or 2 3/4? backset.
What size is a standard padlock?
The standard length varies by product and the optional lengths are designated in the product number: ie 3LF. Some common lengths and designations are: LS: 3/4″ (19mm) LF: 1-1/2″ – 1-9/16″ (38mm – 40mm)
Are all door latches the same size?
Choosing Latches For Your Door Handles or Knobs
The most common size has a casing which is 63mm in depth and the distance to the middle of the square operating spindle is 44mm.The next size of latch has a casing which is 75mm in depth and the distance to the middle of the square operating spindle is 57mm.
What does latch size mean?
An internal door latch allows you to close a door and keep it in place without locking it.These sizes are the overall length of the latch, or the case. When measured to the spindle mechanism, the backset, then they translate as 44mm for the 65mm case and 57mm for the 76mm case.
Are all door spindles the same size?
The modern industry standard cross-section thickness size of a door handle spindle is 8mm (5/16″) square. This size has become the standard size for modern spindles. It should be noted however; spindles and followers were not always standardized to 8mm.
Are all Mortice locks the same size?
A – The Case Depth
The case depth is what would commonly be referred to as the ‘lock size’. Whilst not all locks follow the same template, nine times out of ten, other measurements can be correctly assumed based on the case depth. There are many different case depths but the most common sizes are 64mm and 76mm.
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 size bathroom mortice lock do I need?
If the lock is still in the door it is possible to measure from the front plate of the lock to the centre of the keyhole. If the measurement is 45mm, you need a 64mm (2.5″) mortice lock. If the measurement is 57mm, you need a 76mm (3″) mortice lock.
How does Yale measure night latch?
The size of a Night Latch is measured from the centre of the keyhole to the edge of the door where the night latch should finish.
What is a night latch on a door?
Night latches are mounted onto the surface of a door on the internal side as opposed to being fitted flush within the door itself. The bolt is withdrawn into the casing by using the internal lever from inside or using a key from the outside.
What is the standard door backset?
2 3/8 inches
The backset is the distance from the edge of the door to the center of the 2-1/8-inch bore hole. In the United States, there are two common backsets for residential door locks: 2 3/8 inches and 2 3/4 inches.
What is the typical backset for residential exterior doors?
Backset: Measure from the edge to the center of the drilled knob area; 2.375-inches (2 3/8-inches) is the modern standard.
What is hinge backset?
Hinge backset is the dimension from the edge of the hinge to either the stop on the frame or to the edge of the door. For operating clearance, the hinge backset on the door is 1/16? less than the hinge backset on the frame.
What is the strongest Master Lock?
Master Lock 1177D ProSeries Resettable Combination Lock
- This model is considered one of the strongest Master Lock padlocks courtesy of the brass body and boron-carbide shackles.
- The lock also features a combination lock design with up to 10,000 possible combinations for you to choose from and work with.
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