Wing nuts (also colloquially referenced as butterfly nuts) represent a fundamental tier of tool-less fastening components across international distribution channels. Historically designed for environments requiring frequent structural access, maintenance, or rapid assembly, these fasteners are crucial elements in electronics housings, heavy scaffolding systems, agricultural machinery, and aerospace fluid assemblies. As global manufacturing transitions into computerized, automated workflows, the demand for precision-engineered wing nuts continues to surge.
Today, procurement directors do not simply look for fasteners; they seek metallurgical assurance, dimensional consistency, and supply chain transparency. Chinese manufacturing, driven by state-of-the-art tooling and raw material control, has evolved from high-volume standardized output into high-precision, customized engineering. Modern wing nuts are expected to endure harsh atmospheric conditions, resist shearing forces under cyclic load variations, and provide comfortable ergonomic profiles for human operators—without sacrificing structural stability.
Industrial wing nuts are manufactured across varying material profiles depending on their end-use. From Carbon Steel (Class 4.8, 8.8) with zinc plating, to premium Stainless Steel (Grade A2/A4, SUS 304/316) for marine and high-salinity applications, and Brass/Copper alloys for electrical conductivity and non-sparking hazards.
With the integration of advanced surface technologies—such as hot-dip galvanization, black oxide, zinc-nickel plating, and electro-coating—modern wing nuts easily surpass the 1,000-hour threshold in salt spray tests (ASTM B117 standards), ensuring decade-long operational life.
Sinsun Hardware, established in 2006, is a leading manufacturer and global supplier of high-quality fasteners. As Northern China's largest producer of Self-Tapping Screws and a key innovator in industrial wing nuts and specialized hardware components, we operate from a gigantic 30,000 sqm integrated facility.
Our infrastructure includes modern production zones, a 12,000 sqm smart warehouse maintaining a constant 18,000+ pallet capacity, and multi-language customer support centers. Our yearly supply of over 8,500 containers consistently services key global markets such as the Middle East, Southeast Asia, South America, and Russia.
Explore Sinsun Hardware's journey of rapid technological expansion and manufacturing breakthroughs from 2006 to 2025.
Our fabrication flow ensures structural precision and consistent performance under shear stress.
Standard parameters for heavy-duty industrial wing nuts (DIN 315 & ASME standards)
| Thread Metric (d) | Pitch (mm) | Wing Width (e) max | Wing Height (h) max | Thickness of Wing (g) | Material Tensile Strength |
|---|---|---|---|---|---|
| M4 | 0.70 | 20.0 mm | 10.5 mm | 1.9 mm | ≥ 400 MPa (Class 4.8) |
| M5 | 0.80 | 26.0 mm | 13.0 mm | 2.3 mm | ≥ 500 MPa (Class 5.8) |
| M6 | 1.00 | 33.0 mm | 17.0 mm | 3.0 mm | ≥ 800 MPa (Class 8.8) |
| M8 | 1.25 | 39.0 mm | 20.0 mm | 4.0 mm | ≥ 800 MPa (Class 8.8) |
| M10 | 1.50 | 51.0 mm | 25.0 mm | 5.0 mm | ≥ 1,000 MPa (Class 10.9) |
| M12 | 1.75 | 65.0 mm | 33.5 mm | 6.5 mm | ≥ 1,000 MPa (Class 10.9) |
Every single batch of fasteners produced at Sinsun Hardware undergoes over 12 strict quality examinations. Our internal testing labs verify surface finish (Ra ≤ 0.4μm), corrosion resistance, dimensional tolerances (±0.02mm), high tensile strength (1,000+ MPa), and consistent tempering core hardness.
We offer fully customizable OEM/ODM branding options. Operating from our vast 12,000 sqm logistics center, we execute detailed custom package designs, barcode label generation, and 3D preview renderings. This ensures a streamlined, error-free transit experience from our warehouse loading docks directly to your international distributor facilities.
Partnering with international industrial clients through monthly on-site audits and active global trade shows.
Critical procurement insights for supply managers, mechanical designers, and bulk purchasers.
Provide your dimensional drawings and alloy specifications for a customized price breakdown.
