







The Plastic Wing Nut is an innovative, tool-free fastener, expertly crafted through precision injection molding using advanced engineering plastics. Its unique design features wing-shaped handles for an effortless manual tightening and disassembly experience. These nuts are perfectly suited for light load applications, offering non-metallic contact, and enabling swift maintenance, thanks to the lightweight, insulating, and corrosion-resistant properties of plastic. Our in-depth analysis covers six critical dimensions: structure, performance, application, selection, advantages and disadvantages, and future trends:
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1. Core Structure
Wing-Shaped Handle:
• Design: Exhibiting a double-wing symmetrical structure reminiscent of butterfly wings, each wing spans 10-25mm in length and 2-4mm in thickness. This design delivers a torque lever effect, enabling manual torque levels between 0.5-1.5N·m.
Surface Enhancements: Features roll patterns and anti-slip protrusions to ensure a firm grip and prevent hand slippage.
• Threaded Body:
Thread Specifications: Available in standard metric/imperial threads (e.g., M6, 1/4-20 UNC) with a precision of 6g level, providing universal compatibility.
Thread Length: Ranges from 8-30mm, tailored to meet the demands of various application scenarios.
• Neck Transition:
• Diameter: Carefully designed to be 0.5-1mm smaller than the thread's larger diameter, preventing any contact interference between the handle and substrate.
• Durability: Reinforced neck design with a wall thickness of ≥ 1.5mm ensures robustness and prevents breakage during tightening.
2. Materials and Craftsmanship
• Substrate Selection:
PA66+GF30%: Known for its high strength (tensile strength ≥ 80MPa) and temperature resilience (-40 ºC~120 ºC), making it ideal for outdoor equipment.
POM (Saigang): Offers self-lubricating properties (friction coefficient 0.15-0.25) and low water absorption (0.2%), perfect for precision instruments.
PP (Polypropylene): Cost-effective (approximately 40% cheaper than PA66) and food-grade certified, widely used in household appliances.
• Molding Process:
Injection Molding: Ensures one-time molding with tight tolerance control of ±0.1mm, maintaining seamless integration between the thread and handle.
• Secondary Processing: Select high-end models are enhanced with ultrasonic welding metal inserts, such as stainless steel threaded sleeves, for superior wear resistance.
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