Wing nuts are common fastening devices primarily used in low-torque situations where manual tightening is sufficient without tools. These fasteners come with either standard or metric threading to suit different needs. When paired with a bolt, wing nuts effectively secure multiple components together.

The defining feature of wing nuts is their pair of protruding wings. These extensions allow for easy manual tightening and removal during assembly or disassembly. Also called butterfly nuts, these fasteners contain internal threading that matches with corresponding bolts.