What is the primary function of an open wrench?

The primary function of an open wrench is to loosen or tighten nuts and bolts. This tool features a U-shaped opening that fits over the flats of a nut or bolt head, allowing the user to apply torque effectively. The design of the open wrench enables technicians to grip fasteners securely, which is essential in various maintenance and assembly tasks in aviation.

Using the appropriate size of an open wrench is crucial to prevent rounding off the corners of a nut or bolt, ensuring a secure grip and proper application of force. This capability is vital in ensuring that components are safely and securely attached, which is paramount in aviation, where structural integrity is critical. The versatility and ease of use of an open wrench make it a standard tool in the toolkit of aviation structural mechanics.