Door Latch Bolt

A door latch bolt is a component of a door lock mechanism that extends from the edge of the door into the door jamb or strike plate to secure the door in a closed position. It is the part of the lock that engages with the strike plate to keep the door closed and locked. Here are some key features and characteristics of a door latch bolt:

1. Construction: A door latch bolt is typically made of metal, such as steel or brass, to provide strength and durability. It is designed to withstand repeated use and resist forced entry attempts.

2. Shape and Size: The latch bolt is usually rectangular or rounded in shape and is of sufficient length to extend into the strike plate when the door is closed. The size and dimensions of the latch bolt may vary depending on the lockset or lock type it is designed for.

3. Operation: When the door is closed, the latch bolt is extended by turning the door handle or knob, which retracts the latch bolt into the door. When the door is fully closed, releasing the handle or knob allows the latch bolt to spring back into its extended position, securing the door in place.

4. Strike Plate: The strike plate is a metal plate installed on the door jamb or door frame that includes a hole or recess to receive the latch bolt when the door is closed. The latch bolt engages with the strike plate to hold the door closed.

5. Types of Latch Bolts: There are various types of latch bolts available, depending on the specific lockset or lock mechanism. Common types include deadbolt latch bolts, spring latch bolts, and latch bolts with an auxiliary lock or privacy function.

6. Reversible Latch Bolts: Some latch bolts are designed to be reversible, meaning they can be installed with the door handing (left-handed or right-handed) in mind. This allows for flexibility in the installation and ensures proper operation of the latch bolt.

7. Maintenance: To ensure proper functioning, it is important to keep the latch bolt and strike plate clean and free from debris or obstructions. Lubrication with a suitable lock lubricant or graphite powder may be necessary periodically to maintain smooth operation.

The door latch bolt is a critical component of a door lock system, providing security by keeping the door securely closed. It works in conjunction with the door handle or knob and the strike plate to create a functional and reliable locking mechanism. When selecting or replacing a latch bolt, it is important to ensure compatibility with the lockset and the specific door application.