What is the most widely used type of hardware safetying?

The most widely used type of hardware safetying is lockwire, also known as safety wire. This method involves threading a wire through the holes in fasteners (such as bolts or screws) and then twisting the wire to secure the fasteners in place, ensuring that they cannot loosen due to vibration or operational forces. The effectiveness of lockwire lies in its ability to provide a mechanical connection that keeps components together, making it a standard practice in aviation maintenance and assembly.

Lockwire also has the advantage of being lightweight and easily observable; if the wire is broken or removed, it can be visually inspected. Additionally, there are specific techniques and industry standards for using lockwire, which helps ensure its correct application and enhances safety. Overall, because of its reliability, ease of use, and adherence to safety protocols, it remains the most common safetying method in the aviation industry.