Types of Locks by Mounting and Locking Mechanism
Locks can be classified based on their mounting type and locking mechanism.
By Mounting Type:
- Surface-mounted locks: These locks are installed by inserting a shackle into a hasp. They are easy to install and replace but offer relatively low security. Common applications include sheds, warehouses, basements, and garages.
- Mortise locks: These are the most common type of locks, installed directly into the door. They are best installed in metal doors where they are protected from drilling. Mortise locks should be highly resistant to picking, durable, and reliable.
- Overlay locks: These locks are mounted on the surface of the door. They can be used on both wooden and metal doors. They are easy to install, repair, and replace but are not very resistant to forced entry.
By Locking Mechanism:
- Bolt locks: These locks have a bolt with teeth and grooves. They offer low security and are not recommended for protecting valuables.
- Wafer locks: These are the most secure type of locks with a secret part consisting of wafers. The more wafers, the more secure the lock (ideally 6-8). Wafer locks can often be combined with other security systems.
- Cylinder locks: These locks have a mechanism consisting of a cylinder, plug, and wafer stack. Cylinder locks are highly reliable and can be single or double-sided, single or double-bitted.
- Combination locks: Used to secure gates, entrance doors, and interior rooms. They do not require a key but have a lower security level.
- Electromechanical locks: Similar in design to traditional mechanical locks but can be opened and closed remotely. They can be mortise or overlay locks.