Wing Nut

A wing nut is a component used in fabricated metal product manufacturing. It has two projections, or wings, that allow it to be tightened and loosened by hand, eliminating the need for a wrench. This design makes it suitable for frequently adjusted, light-duty fixtures, covers, clamps, and display hardware where tool-free access is beneficial. When specifying a wing nut, buyers should consider thread size, wing form and span, body style, material, finish, required hand torque, and clearance. Safety and load values must be obtained from the selected product standard, approval, drawing, or test report; they cannot be inferred from appearance or nominal size. The request for quotation (RFQ) should also state quantity, packaging, inspection, and traceability requirements. Materials commonly used include steel, stainless steel, zinc alloy, or polymer, depending on the design. The applicable standard referenced is DIN 315, which serves as a catalog designation and a procurement reference. It is essential to verify all model-specific values and standards with the legal manufacturer or supplier before use.

Finger force applied to the wings creates thread preload, which holds the joint together. This preload is generally lower than that achieved with a wrench-tightened nut. Therefore, a wing nut is not a substitute for a specified high-preload nut. The actual preload depends on the applied torque, thread friction, and material properties. For critical applications, the required torque and resulting preload must be confirmed through testing or reference to the product standard.