What is a latch bolt throw?

Bolt projection or bolt throw is a distance from the edge of the door, at the bolt center line, to the farthest point on the bolt in the projected position.

What is the minimum latch throw on a single fire door?

The minimum latch throw is ½” or ¾” depending upon the door. To determine the duration of a fire rated opening, the fire rating for each component must be determined. The component with the shortest duration determines the fire rating duration of the entire opening.

What is a dead bolt throw?

A deadloc~ is any lock cont.:dning a deadbolt. Any horizontal deadbolt must have a throw of at least one inch to be considered adequate security. Shorter throw deadlocks are too vulnerable to frame spreading, a common burglar attack, LOCK-IN-KNOB LOCKSETS al’e also known as cylindrical locksets or key-in-knob locksets.

What is the throw of a lock?

The “throw” of a deadbolt is the length that it extends out of the door edge when engaged. A longer throw makes it more difficult for burglars to gain entry by spreading the doorframe. Most locksmiths recommend a minimum throw of one inch.

What is the difference between a deadbolt and a Deadlatch?

The difference between a deadbolt and deadlatch is that when you close the door behind you, the deadlatch will self-deadlock. Once again, you will keylock a deadlatch from the inside before leaving, but it will allow you to close the door behind you without having to keylock it from the outside when you leave.

Are fire doors supposed to latch?

Fire doors are typically required to latch, but defective latching hardware is sometimes removed instead of replaced, as illustrated in this photo of an existing fire door in a hotel corridor.

Do fire doors require a latch?

A fire door must remain closed within the frame and therefore a latch or lock will ensure this happens. We recommend roller catches, rim latched, mortise latches and mortise locks.

What is a lock throw?

The outward movement of a lock bolt and the distance which it travels under the action of a spring or key. Shoot applies more particularly to spring bolts, throw being a better word for dead bolts.

Can you kick in a deadbolt?

Generally speaking, deadbolts are sturdy locks that can withstand kick in and other forced entry attempts. However, a door with a deadbolt can still be kicked down if the door itself is not solid. So, to protect your door against kick in, you want to make sure both the lock and door are of high-quality grade.

How do you fix a loose latch bolt?

Place the screwdriver inside the tab where the door latches and then bend the tab on the strike plate until it’s straight again. Be careful when bending the tab, making sure not to push it too far the other way. When the tab is straightened out, try opening and closing the door.

What is throw length on a lock?

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