Wing nuts have protruding 'wings' to make hand tightening and loosening easier. Wing nuts are used when a part is often assembled and disassembled by hand, where no more than finger pressure is needed. They may be used with or without a washer.
The ease of use also make wing nuts popular for applications in which convenience is vital, such as on boats and bicycles. InStock Fasteners' wing nuts are either cold-forged or stamped. Stamped wing nuts feature hollow wings open at the top. Cold-forged wing nuts are solid parts.