True or False: Lockwire and cotter pins are used to secure fasteners as a safety device.

The statement is accurate because lockwire and cotter pins are indeed essential safety devices used to secure fasteners in engineering applications, especially in aerospace. These devices prevent fasteners from loosening due to vibration or centrifugal forces that can occur during operation.

Lockwire is a flexible wire used to secure an already installed fastener, such as a bolt or nut, ensuring that it does not turn loose. This method is particularly useful in high-vibration environments, such as aircraft engines and various components of an aircraft, where failure to maintain secure fasteners can lead to catastrophic results.

Cotter pins serve a similar purpose, providing a mechanical means of locking a fastener in place. When a nut is attached to a bolt, a cotter pin is inserted through a hole in the bolt’s end and bent to keep it secure. This use is widespread in various applications, though especially critical in aviation where safety and reliability are paramount.

In summary, the use of lockwire and cotter pins is a proven method to enhance safety by ensuring that fasteners remain tightly secured, thus affirming the truth of the statement.