A hasp lock, also known as a padlock hasp or simply hasp, is a type of locking mechanism commonly used to secure doors, gates, cabinets, and other items. It consists of a hinged metal strap or plate (the hasp) and a padlock that fits through the loop of the hasp to lock it in place.

To use a hasp lock, the hinged plate is attached to one side of the door or gate, while the other side has a loop or eyelet for the padlock. When the door or gate is closed, the padlock is inserted through the loop of the hasp, and the lock is secured. This prevents the door or gate from opening, providing a simple and effective security measure.

Hasp locks are available in various sizes and materials, including steel, brass, and stainless steel, to suit different security needs and environmental conditions. They are often used in both residential and commercial settings to secure storage areas, outdoor sheds, toolboxes, and more. Additionally, hasp locks are commonly used in combination with other security measures, such as chains and cables, for enhanced protection against unauthorized access and theft.