How are lock sizes measured?

Published by Anaya Cole on

How are lock sizes measured?

Backset is measured from the centre of the keyhole to the edge of the lock. Most backsets are commonly measured at either 44mm (for a 64mm (2½”) lock) and 56mm (for a 76mm (3”) lock). Typically a lock adjacent to a glass panel will be 2½” (44mm) and otherwise 3” (56mm), but you should always measure to be sure.

What are lock sizes?

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 is the backset 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).

Is a Yale lock BS3621?

The Yale British Standard PBS BS3621 Nightlatch Polished Chrome is one of the few insurance-rated nightlatches on the market. In addition to automatically deadlocking when the door is in the closed, the inside handle can be locked by a turn of the key.

What is the lock backset measurement?

How big is a door lock hole?

2 1/8″
The Bore hole is the large diameter hole where the door knob is mounted. The standard sized bore hole is 2 1/8″ in diameter. Through the edge of the door there is a 1″ cross bore that extends from the edge of the door through the bore hole. This cross bore is where the latch is installed.

What is lock without a key called?

Keypad Locks They can be battery-powered or mechanical and generally utilize deadbolt locks, knob locks or mortise locks for the actual locking mechanism. These door locks offer enhanced versatility and enable entry without a key, although many also contain keyholes for alternate unlocking mechanisms.

What is a 5 Lever Mortice Deadlock BS3621?

The Fortress 5 Lever British Standard (BS) Deadbolt Mortice Door Lock is a high security deadlock, conforming to the BS 3621:2007; meets the exacting demands of insurance companies and the Police. Higher security and strength are delivered by a 20mm bolt throw in every lock.

What is a 5 Lever Mortice deadlock BS3621?

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