Wing Nuts / Butterfly Nuts (DIN 315) – Zinc Plated Steel – Cold Forged / Cast – Manufacturer Direct

Versatile Wing Nuts (DIN 315): The Ultimate Tool-Free Fastening Solution

At Handan Bolt, we are a leading manufacturer of high-quality Wing Nuts, commonly referred to globally as Butterfly Nuts due to their distinctive shape. Produced in our Yongnian factory using advanced cold-forging and die-casting technologies, these nuts are the industry standard for applications requiring frequent adjustments. We supply millions of DIN 315 nuts annually to the furniture, music equipment, and construction industries.

What is a Wing Nut?

A Wingnut (Read more on Wikipedia) is a nut with a pair of metal “wings” projecting upward on opposite sides. This ergonomic design allows the nut to be tightened and loosened using only your fingers, eliminating the need for wrenches or drivers. This “Quick-Release” feature makes them indispensable in scenarios where parts need to be assembled and disassembled regularly.

Manufacturing Standards: DIN 315

As indicated in your product specifications, we strictly adhere to the DIN 315 standard. However, it is important to note that there are two main manufacturing styles within this category:

1. Cold Forged Steel (German Type)

This is the most popular modern style.

• Appearance: Smooth, rounded wings with a sleek finish.
• Material: Low carbon steel or Stainless Steel.
• Advantage: High strength, better aesthetics, and lower cost for mass production. This is the ideal choice for consumer goods like gym equipment or furniture.

2. Malleable Iron (Cast Type)

The traditional heavy-duty style.

• Appearance: Slightly rougher surface texture, often with square-edged wings (American Type often falls here).
• Advantage: Extremely durable and resistant to deformation under heavy torque.

Material Grades and Finishes

We offer Wing Nuts in materials tailored to your specific environmental needs:

Carbon Steel (Grade 6)

As per your listing, we supply Grade 6 wing nuts, which offer sufficient tensile strength for most hand-tightened applications.

• Zinc Plated (Galvanized): Our standard finish is a bright Blue/White Zinc plating. This protects the steel from oxidation and keeps the threads running smoothly, preventing rust seizure.

Stainless Steel (304 / 316)

For marine applications (like boat hardware) or outdoor lighting fixtures, we recommend our Stainless Steel Wing Nuts. They are completely rust-proof and maintain a polished, premium look for years.

Brass

We also manufacture solid brass wing nuts for electrical components and decorative antique furniture restoration.

Common Applications

The utility of the Wing Nut spans across countless industries:

• Music Industry: Securing cymbals, drum hardware, and microphone stands.
• Photography & Lighting: Adjusting light stands, clamps, and camera rigs.
• Furniture: Used in “Knock-Down” furniture for easy assembly by the customer.
• Industrial Fixtures: Used on rapid-prototyping jigs where parts are swapped out constantly.
• Air Filtration: Securing air filter covers on cars and HVAC systems.

Why Source from Handan Bolt?

Ergonomic Design: Our DIN 315 molds are designed with smooth, rounded edges to ensure they don’t hurt your fingers, even when tightened firmly.
Clean Threads: We use precision tapping machines to ensure every nut spins on freely—essential for hand-tightened fasteners.
Custom Packaging: We can pack these in small polybags (e.g., 4 pcs/bag) for retail hardware kits.

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