How to choose Wing square nuts and round wing nuts

Wing square nuts and round wing nuts are both types of nuts, the difference between them lies in their shapes and application scenarios.

The "wing shape" of the wing-shaped square nut means that there is a flat "wing" on each side of the nut, while the square means that there are 4 corners on each side of the nut, so it is also called "wing nut". The wing-shaped design of this nut makes it easier to operate by hand, and can be tightened or loosened directly by fingers without using a screwdriver or wrench. Wing square nuts are commonly used in communication equipment, furniture, machines and equipment and other fields. The advantage of the wing-shaped square nut is that it can reduce the time and tools of assembly, which is convenient and quick. In addition, it is designed to increase the contact area between the nut and the screw and distribute the torque, making the nut tighter. However, winged square nuts have slightly lower tightening force compared to other types of nuts, making them unsuitable for applications requiring high tightening forces.


The round wing nut refers to the design that its wings are round and there are no four corners. Compared with the wing-shaped square nut, the round wing nut is better in terms of load distribution and uniform force, which can provide a larger area and more uniform pressure for the screw, and can be locked with greater force. These wing-like protrusions allow the nut to be turned manually without the use of tools. Wing nuts are typically used in applications that require frequent tightening and loosening, or where quick adjustments are required without tools. Round wing nuts are usually used in precision fields such as automobiles, aerospace, electric power, petroleum and petrochemicals, as well as sealing, fixing and adjustment of mechanical equipment.

To sum up, there are differences in shape and application scenarios between wing-shaped quadrangular nuts and round wing nuts. In application, different nuts need to be selected according to specific needs and actual conditions.