







The Plastic Wing Nut stands out as a sophisticated, tool-free fastener, masterfully crafted through a precise injection molding process utilizing top-tier engineering plastics. This ingenious product offers a unique solution with its wing-shaped handles, designed for seamless manual tightening and disassembly. It caters perfectly to scenarios demanding lightweight, non-metallic contact, rapid maintenance, and effortless adaptability. This is achieved through its plastic construction, which ensures insulation, corrosion resistance, and enduring durability. Let's delve into an insightful analysis across six essential dimensions: structure, performance, application, selection, advantages and disadvantages, and future trends.
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1. Core structure
Wing shaped handle:
• Shape: Boasting a double wing symmetrical design reminiscent of delicate butterfly wings, it features a single wing length ranging from 10-25mm and a thickness of 2-4mm, providing a robust torque lever effect. This design allows for manual torque to achieve an impressive 0.5-1.5N · m.
Surface treatment: Enhanced with roll patterns or anti-slip protrusions, these features are meticulously incorporated to prevent any slipping, ensuring a secure grip.
• Threaded body:
Thread type: Available in standard metric/imperial options (such as M6, 1/4-20 UNC), with precision maintained at a 6g level, ensuring universal compatibility.
Thread length: Customizable between 8-30mm to perfectly align with specific application scenarios, guaranteeing optimal functionality.
• Neck transition:
• Diameter: Designed to be 0.5-1mm smaller than the larger diameter of the thread, this meticulous detail prevents any interference between the handle and the substrate, enhancing performance.
• Strength: Featuring a thickened neck design with a wall thickness of ≥ 1.5mm, it is engineered to withstand pressure, avoiding breakage when tightened.
2. Materials and Craftsmanship
• Substrate selection:
PA66+GF30%: This material offers superior strength with a tensile strength of ≥ 80MPa and impressive temperature resistance, ranging from -40 ºC to 120 ºC, making it ideal for rugged outdoor equipment.
POM (Saigang): Celebrated for its self-lubricating properties (friction coefficient 0.15-0.25) and low water absorption (0.2%), it excels in precision instruments, ensuring smooth operation.
PP (polypropylene): Not only is it cost-effective—approximately 40% cheaper than PA66—but it is also food grade certified, making it a preferred choice for household appliances.
• Molding process:
Injection molding: This process ensures one-time molding with tight tolerance control of ± 0.1mm, guaranteeing a seamless integration between thread and handle.
• Secondary processing: High-end models are enhanced with ultrasonic welding of metal inserts, such as stainless steel threaded sleeves, to significantly boost wear resistance and durability.
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