DIN 316 Wing Bolts | SS304 & SS316 Stainless Steel | WANSON FASTENER

Premium Wing Bolts (Butterfly Bolts) for Tool-Free Manual Fastening
Our Wing Bolts are engineered for applications that require frequent, manual adjustments without the need for tools. Manufactured to DIN 316 standards, these “Butterfly Bolts” feature precision-forged wings for a comfortable grip and maximum torque. Available in Stainless Steel (304/316) and Galvanized Carbon Steel to suit any industrial or marine environment.
  • Standard: DIN 316 / AFNOR / ASME.
  • No Tools Required: Easy to tighten/loosen by hand.
  • Corrosion Resistant: Ideal for outdoor and machinery use.
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Industrial Wing Bolts: The Ultimate Tool-Free Fastening Solution

Wing bolts, also known as butterfly bolts, are specialized fasteners designed with a unique winged head that allows users to tighten or loosen the bolt entirely by hand. At [Your Brand Name], we provide high-precision DIN 316 Wing Bolts that combine structural integrity with ergonomic design, making them indispensable for industries ranging from machinery manufacturing to outdoor equipment assembly.

Why Choose Our Wing Bolts?

As a professional wing bolt manufacturer, we focus on durability and precision. Our bolts are crafted using advanced cold-forging technology, which ensures a grain structure that is much stronger than standard cast bolts. This results in a wing head that can withstand repeated manual torque without snapping or deforming.

  • Premium Stainless Steel: Our Stainless Steel Wing Bolts (SS304 and SS316) offer exceptional resistance to oxidation and chloride, making them perfect for marine hardware and chemical processing plants.
  • Ergonomic Wing Design: The wing shape is optimized for finger pressure, providing a non-slip grip even in oily or wet conditions.
  • Standard Compliance: We strictly adhere to DIN 316 specifications, ensuring consistent dimensions for global compatibility.

Technical Data & Dimensions

Metric SizeThread Pitch (mm)Wing Span (mm)Material Grade
M50.824A2/A4/4.8
M61.030A2/A4/4.8
M81.2536A2/A4/8.8
M101.548A2/A4/8.8

Diverse Applications of Butterfly Bolts

The versatility of butterfly wing bolts makes them a favorite in several sectors:

  • Machinery Guards: For panels that require frequent removal for maintenance.
  • Consumer Goods: Used in drum kits, camera tripods, and adjustable furniture.
  • Electrical Enclosures: Securing covers that need quick manual access.
  • Water Treatment: Utilizing SS316 Wing Bolts for corrosion-free manual valves.

Quality Assurance & Global Supply

Quality is our priority. Every batch of wholesale wing bolts undergoes rigorous testing, including thread Go/No-Go gauge checks, tensile strength analysis, and salt spray testing for surface finishes. We offer flexible packaging options, including small boxes for retail or heavy-duty gunny bags for bulk industrial orders.

Request a Customized Wing Bolt Quote

Need non-standard sizes or specific finishes like Black Oxide or Nickel plating? Contact our technical sales team today. We provide free samples and fast global shipping to meet your project deadlines.

GET A QUOTE NOW

Material

Stainless Steel (A2-70, A4-80), Carbon Steel, Brass, Nylon

Standard

DIN 316 (German Standard), ANSI/ASME B18.6.X

Diameter

M3, M4, M5, M6, M8, M10, M12, M16, M20

Length

6mm – 100mm (Custom lengths available)

Surface Finish

Plain, Zinc Plated (Blue/White/Yellow), Polished, Nickel Plated

Manufacturing

Cold Forged (High strength) or Casting (Economic)

Thread

Full Thread, Metric Coarse, UNC, UNF