Product Summary

Longze High-Performance Nylon Wing Nuts are specialized fasteners designed for solar mounting systems, electrical enclosures, and marine applications requiring rapid manual

adjustment and electrical isolation. Manufactured in Yongnian, China, our wing nuts are injection-molded from genuine Polyamide 66 (PA66), reinforced with UV stabilizers to

prevent embrittlement under intense solar radiation. Whether for securing adjustable tilt brackets or mounting junction boxes, Longze nylon wing nuts provide a lightweight, vibration-resistant, and 100% corrosion-proof fastening solution.

• ✔ Superior Electrical Insulation: The non-conductive nature of PA66 eliminates the risk of galvanic corrosion between dissimilar metals and provides an inherent safety barrier against leakage currents.

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• ✔ Tool-Free Assembly: The ergonomic wing design allows for maximum finger torque, enabling rapid onsite adjustments and maintenance without the need for specialized wrenches.

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• ✔ UV & Weather Resistance: Engineered for 20+ years of outdoor exposure, our Nylon 66 formula maintains its mechanical toughness and dimensional stability across a wide temperature range ($-40^\circ\text{C}$ aan $+85^\circ\text{C}$).

• Standards: DIN 315 (Nylon Equivalent), ISO 965.

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• Thread Range: M4 - M12 | #8 - 1/2".

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• Material: Virgin Nylon PA66 (Available with 30% Glass Fiber reinforcement).

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• Color: Standard White/Natural, Black (UV Stabilized), or Custom Project Colors.

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• Flammability Rating: UL 94 V-2 (V-0 available upon request).

Mechanical Properties & Material Standards

• Matching the polymer grade to the structural requirements of the solar installation.

• Material Property	Testing Method	Value (PA66)	Advantage
  Tensile Strength	ISO 527	75 - 85 MPa	High Stripping Resistance
  Dielectric Strength	IEC 60243	27 - 30 kV/mm	Total Electrical Isolation
  Melting Point	ISO 11357	260°C	High Thermal Stability
  Water Absorption	ISO 62	2.5% (at Saturation)	Dimensional Stability

Standard Cross Arm Dimensions

• Common configurations for standard flat-roof mounting systems.

• Thread Size (D)	Wing Span (e)	Total Height (h)	Base Dia (d2)	Max Manual Torque
  M6	24 mm	12 mm	11 mm	2.5 Nm
  M8	30 mm	15 mm	13 mm	4.0 Nm
  M10	36 mm	18 mm	15 mm	6.5 Nm
  M12	45 mm	22 mm	18 mm	9.0 Nm

Corrosion Resistance & Aging

• Ensuring 25+ years of maintenance-free service in outdoor environments.

• Environment Type	Chemical Resistance	UV Stability	Service Life	Toepassing
  Coastal / Marine	Extreme (Salt Proof)	High	20+ Years	Offshore PV / Rigs
  Industrial / Acid Rain	High	High	20+ Years	Urban Solar Arrays
  Desert / High Heat	Moderate	Maximum (Black)	15+ Years	Solar Tracking Farms

 

Avoid Pitfalls:

• Recycled Material (Brittle Failure): Many low-cost suppliers use recycled plastic that cracks after 6 months of sun exposure. Longze uses 100% Virgin PA66, ensuring the "wings" won't snap off during manual tightening.

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• Thread Stripping: While nylon is tough, it has lower shear strength than steel. We recommend using nylon wing nuts for low-load adjustment points or pairing them with nylon bolts to ensure thermal expansion compatibility.

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• Color Fading: For maximum UV protection, we always recommend Black PA66 for outdoor solar projects, as the carbon black additive acts as a natural shield against polymer degradation.

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Perfect Fit Assembly:

• Nylon-on-Nylon: Use with our Nylon Hex Bolts for a completely non-metallic, non-corrosive fastening system in chemical processing or battery storage areas.

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• Vibration Dampening: The natural elasticity of Nylon 66 acts as a built-in lock washer, resisting loosening caused by wind-induced vibrations on solar panels.

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Quality Control & Logistics:

• ISO 9001 Certified: 5-step QC including moisture content verification, thread Go/No-Go gauging, and batch-wise tensile testing.

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• Sea-Worthy Packaging: Packed in sealed, moisture-proof PE bags within reinforced cartons to maintain the optimal mechanical properties of the nylon during transit.

• Q: Can these replace stainless steel wing nuts? A: For electrical insulation and corrosion resistance, yes. For structural load-bearing joints, we recommend staying with stainless steel. Nylon is best for covers, sensors, and adjustable tilt-legs.

• Q: Do you offer Glass-Fiber reinforced versions? A: Yes, we can supply PA66 + 30% GF which significantly increases tensile strength and stiffness for high-torque applications.