Butterfly Wing Nut Product Introduction

The butterfly wing nut (also known as a wing nut, thumb nut, or butterfly nut) is a fastener with two wing-shaped extended arms, featuring internal threads in the center and a butterfly-like appearance, specifically designed for quick hand tightening and removal. No tools such as wrenches are required during use — simply pinch the wings on both sides with your fingers to tighten or loosen. Common standards include GB/T 62 (square-wing and round-wing butterfly nuts) and DIN 315, with sizes generally ranging from M3 to M16. Materials include carbon steel (galvanized, blackened, nickel-plated, etc.), stainless steel (SUS304, SUS316), brass, aluminum alloy, zinc alloy, and nylon. Due to its convenient operation and rapid assembly/disassembly, the butterfly wing nut is widely used in situations requiring frequent adjustments or tool-free operation.

1. Product Features

Unique appearance: Symmetrical wings on both sides, shaped like a butterfly or gold ingot, offering high recognizability.

Hand operation: Specially designed for finger application of force — no wrenches or sockets required — can be easily tightened or loosened by hand.

Complete thread specifications: Common sizes M3 to M16, both fine thread and coarse thread available, with some customizable options.

Diverse materials: Carbon steel, stainless steel, copper, aluminum, zinc alloy, and nylon are available for selection to suit different environments.

Rich surface treatment options: Carbon steel can be galvanized, blackened, nickel-plated, or chrome-plated; stainless steel can be natural or passivated; aluminum alloy can be anodized.

Simple and reliable structure: One-piece or stamped forming, with wings securely connected to the nut body for long service life.

2. Product Advantages

Fast and convenient operation: No need to search for tools — fingers can complete assembly and disassembly, greatly improving work efficiency.

Suitable for frequent assembly/disassembly: In situations requiring regular adjustment, replacement, or maintenance, butterfly wing nuts can be reused repeatedly without easy damage.

Saves tool costs: Reduces reliance on wrenches and other tools, especially suitable for environments where tools are unavailable or inconvenient.

Optional anti-loosening effect: Some butterfly wing nuts can be used with spring washers or inserts to achieve certain anti-loosening requirements.

User-friendly appearance: Rounded shape that is comfortable to grip and less likely to cause hand injuries during operation, suitable for equipment requiring frequent manual adjustment.

Optional materials and corrosion resistance: Stainless steel, copper, nylon, and other materials can adapt to special environments such as humid, corrosive, or insulating conditions.

3. Applications

Mechanical equipment: Machine tool guards, safety baffles, maintenance covers, fixtures, molds, and other parts requiring quick opening and closing.

Electronics and instruments: Instrument panels, chassis cover plates, battery compartment covers, test fixtures, communication equipment, etc.

Medical equipment: Rehabilitation equipment, wheelchairs, hospital beds, examination equipment, and other devices requiring manual adjustment.

Photography and equipment: Tripods, light stands, pan-tilt heads, quick-release plates, and other photography accessories for quick locking.

Furniture and hardware: Display stands, shelving, folding tables and chairs, lighting fixtures, toys, fitness equipment, etc.

Outdoor and leisure: Tents, sun umbrellas, bicycles, electric vehicles, gardening tools, and other occasions requiring temporary assembly and disassembly.

Other industries: Ships, automotive interiors, environmental protection equipment, food machinery, etc.