What products does Youlong manufacture?

Youlong manufactures photovoltaic mounting components such as aluminum guide rails, water channels, angle brackets and connectors, plus precision fasteners including anchor bolts, carriage bolts, expansion bolts, flat washers and wing nuts for solar, wind power and construction projects.

Can you produce custom PV brackets and fasteners to my drawings?

Yes. Our automated stamping, forging and CNC machining lines support OEM and custom production. Send drawings or samples with material, finish and quantity requirements, and our engineers will confirm feasibility, tolerances and a written proposal.

How do you control the quality of fasteners for outdoor solar projects?

We run random inspections from raw material intake to final dispatch and test against industry standards, including salt spray corrosion testing and tensile strength testing, so that hardware performs reliably in long-term outdoor exposure.

Which material should I choose for coastal or high-humidity PV sites?

For coastal, offshore or industrial sites with high corrosion categories, stainless steel grade 316 (A4) fasteners are generally recommended. For inland sites, 304 (A2) stainless or hot-dip galvanized carbon steel is commonly specified. Isolating washers help prevent galvanic corrosion between aluminum rails and steel hardware.

Where is Youlong located and do you export worldwide?

Youlong is located in Yongnian District, Handan City, Hebei Province, known as China's Fastener Capital. We have served more than 100 clients worldwide with cumulative shipments exceeding 300,000 tonnes.

China Plastic Wing Nut Suppliers, Factories

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China Plastic Wing Nut Suppliers, Factories

Labor-saving plastic wing nut with ergonomic butterfly wings, featuring hand-tightenable design, anti-slip and corrosion resistance. Made of high-strength engineering plastic and carbon steel insert, suitable for quick fastening without tools, widely used in machinery, furniture, outdoor hardware and adjustable installation scenarios.

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Product Description

Product Application

Widely used in mechanical equipment adjustment, furniture assembly, shelf fixing, outdoor fixtures, pipeline brackets and adjustable components, ideal for frequent disassembly and adjustment scenarios.

Suitable for quick fastening of threaded rods, bolts and screws, eliminating the need for wrenches or other tools, realizing hand-tightening and disassembly for efficient on-site operation.

Applied in indoor daily hardware, outdoor non-corrosive environments and light-duty fastening projects, adapting to various light industrial and civil assembly needs.

Perfect for temporary fixing, equipment debugging, later maintenance and renovation work, providing convenient and flexible fastening solutions for various adjustable structures.

Compatible with standard threaded rods and bolts, matching various installation environments, meeting the needs of quick assembly and frequent adjustment of light-duty components.

Material & Processing Features

Adopts high-strength engineering plastic shell + carbon steel nut insert composite structure, combining plastic anti-corrosion advantage and metal thread wear resistance.

Ergonomic butterfly wing design, large stress area, anti-slip texture on the surface, comfortable hand feeling and labor-saving tightening without slipping.

Precision machining of internal metal threads, neat and uniform, strict dimensional tolerance control, tight fitting with bolts, stable and firm after fastening.

One-piece injection molding process, tight bonding between plastic wing and metal insert, not easy to fall off, high overall strength and long service life.

Plastic surface has excellent anti-corrosion, anti-rust and insulation performance, suitable for humid environments and scenarios requiring insulation protection.

Core Product Benefits

Tool-free hand-tightening design greatly improves installation and disassembly efficiency, saving construction time and labor costs for frequent adjustment projects.

Ergonomic wing design reduces operating fatigue, easy to grasp and twist, even for long-term use, ensuring comfortable and efficient operation.

Good anti-loosening performance, not easy to loosen under slight vibration, ensuring stable fastening of adjustable components and avoiding frequent retightening.

Complete specifications with various thread sizes, supporting matching with standard threaded parts, adapting to different installation and adjustment needs.

Comply with international fastener standards, passing torsion test, wear test and anti-corrosion test, with stable quality and reliable performance.

Lightweight structure, convenient transportation and storage, wide applicability and cost-effective, a preferred fastener for quick and adjustable fastening scenarios.

Detail Pictures

Frequently Asked Questions

QWhat materials are used in this wing nut composite structure?

The product integrates a high-strength engineering plastic outer wing shell with an internal carbon steel nut insert, providing a balance of corrosion resistance, electrical insulation, and durable metal thread engagement.

QAre installation tools required for assembly or adjustment?

No tools are needed. The ergonomic butterfly wing design offers a wide gripping surface and anti-slip texture, allowing effortless manual hand-tightening and rapid disassembly.

QCan these fasteners withstand slight vibration without loosening?

Yes. The tight tolerance engineering of the internal threads combined with the composite structure provides reliable anti-loosening performance under mild mechanical vibrations.

QAre these wing nuts suitable for humid and outdoor conditions?

Yes, the engineering plastic exterior exhibits superior rustproof and anti-corrosive characteristics, making it suitable for damp indoor environments and non-corrosive outdoor applications.

QAre the thread specifications compatible with standard bolts?

Yes, the internal threads are manufactured strictly in accordance with international standard dimensions, ensuring seamless compatibility with standard threaded rods, bolts, and studs.