304 Stainless Steel Round-Wing Nut-Butterfly Nut Hand Twisted Fastener Hardware Part

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1. Performance & Material Properties
   • Premium 304 Stainless Steel Alloy – Made from AISI 304 (18-8) austenitic stainless, offering tensile strength ≈515 MPa and yield strength ≈215 MPa, with >40 % elongation. The passive chromium-oxide film provides outstanding resistance to oxidation, pitting and crevice corrosion in indoor, outdoor and mildly aggressive environments.
   • Round-Wing Ergonomic Design – Each nut features two smooth, circular “wings” that distribute hand-torque evenly around the fastener. This low-profile, rounded geometry minimizes snagging on fabrics or wiring, while providing comfortable finger grip and up to 2 Nm of tool-free torque.
   • Precision-Rolled Threads – Available in both UNC/UNF inch and ISO metric pitches (M4–M10, ¼-20–5/16-18), threads are cold-rolled to increase fatigue resistance, ensure smooth engagement, and prevent stripping during repeated adjustments.
   • Temperature & Chemical Stability – Maintains dimensional integrity from –50 °C to +400 °C and resists most cleaning agents, solvents, fuels, and mild acids/alkalis without surface degradation or embrittlement.
2. Detailed Application Range
   • Mechanical Assemblies – Ideal for securing guards, covers, brackets and jigs on conveyors, presses and test fixtures where frequent access or rapid adjustments are required.
   • Electronic Enclosures – Fastens removable panels, PCB mounting posts and heatsink clamps in telecommunications racks, industrial control cabinets and laboratory instruments—ensuring both EMI shielding continuity and easy maintenance.
   • Furniture & Decorative Fixtures – Perfect for modular shelving, picture frames, display stands, signage and decorative trim where a sleek, stainless finish complements modern interiors and tool-free assembly enhances user experience.
   • HVAC & Lighting Installations – Secures access panels, grille frames, diffusers and light-fixture retainers in commercial and residential HVAC ducts or suspended ceiling systems, enabling quick removal without tools.
3. Effortless Operation & Convenience
   • Tool-Free Hand Tightening – Round wings allow users to apply up to 2 Nm of torque by hand, eliminating the need for wrenches or screwdrivers even in tight or overhead spaces.
   • Quick-Release & Repetitive Use – Smooth start threads and high tolerance manufacturing minimize cross-threading; nuts back off cleanly for fast panel or component removal and can be reinstalled hundreds of times without loss of clamping force.
   • Universal Compatibility – Offered in the most common sizes and thread pitches, these wing nuts pair seamlessly with standard machine screws, studs, threaded rods and furniture fittings across global market standards.
   • Organized Assortment Kits – Available in 50–200-piece kits with compartmented packaging for instant size selection, reducing downtime and ensuring the right nut is always at hand on the job site.
4. Superior Quality & Long-Term Reliability
   • International Standards & Certification – Produced in ISO 9001–certified facilities to meet ASTM A194 (Grade 8) and ANSI B18.6.9 tolerances (±0.1 mm), guaranteeing dimensional accuracy, mechanical consistency and interchangeability.
   • Rigorous Corrosion & Mechanical Testing – Each batch undergoes ≥720 h neutral salt-spray (ASTM B117) and torque-to-turn validation to ensure dependable performance under cyclic loads and environmental stress.
   • Full Traceability & Environmental Compliance – Lot-coded from melt to finished part with mill certificates; RoHS- and REACH-compliant, free from hexavalent chromium and other restricted substances—supporting both worker safety and sustainability.
   • Maintenance-Free Service Life – The combination of high-purity stainless steel, precision-rolled threads and smooth surface finish delivers decades of vibration-resistant, rust-free operation in even the harshest industrial, marine or architectural settings.