What is another name for a tubing or flare nut wrench?

A tubing or flare nut wrench is also known as a line wrench. This specialized tool is designed with a unique configuration that features open ends shaped like a U, allowing it to grip the sides of nuts while providing clearance for the tubing or lines it is attached to. This design prevents rounding off the corners of fasteners, which is a common issue with standard wrenches when working on hydraulic lines and plumbing.

The line wrench’s ability to engage more surface area of the nut makes it especially useful for fittings that are located in tight spaces, where using a standard socket or adjustable wrench may not provide enough room for proper engagement. Additionally, since flare nuts and tubing fittings require a specific torque to secure without damaging the fittings, using a line wrench ensures that you can achieve this with ease.

In contrast, a socket wrench, adjustable wrench, and torque wrench serve different purposes. A socket wrench uses a combination of interchangeable sockets for various sizes of nuts and bolts. An adjustable wrench has a movable jaw that can grip different sizes of nuts but lacks the precision offered by a line wrench. A torque wrench is specifically designed to apply a precise amount of torque to a fastener, often used in applications where accurate tension is critical, but it does not serve the purpose