
This product is a wing-shaped manual nut, which can be installed and removed without tools. It is cold-forged or cast, with a robust structure, precise threads, and an ergonomically designed wing for a comfortable grip. It is compatible with various bolts and studs. The full range covers mainstream systems, is readily available, rust-proofed for corrosion resistance, and meets environmental regulations through quality control. Compliance documentation can be provided, and non-standard customization is supported. It is suitable for manual fixing scenarios.
National Standards GB/T 62.1 (Square Wing), GB/T 62.2 (Round Wing); International Standard ISO 2167; American Standard ANSI/ASME B18.6.9; German Standards DIN 315, DIN 314;
Metric specifications: Thread sizes M3~M24, covering all coarse threads, divided into three main categories: square wing cold heading type, round wing stamped type, and cold heading integrated type; Imperial specifications: Thread sizes #4-40~1"-8, compatible with UNC/UNF American standard thread systems.
High-quality low-carbon steel, medium-carbon steel, alloy steel, 304 stainless steel, 316 stainless steel, brass, aluminum alloy, etc.
Environmentally friendly blue-white zinc, colored zinc, black zinc, environmentally friendly nickel plating, zinc-nickel alloy plating, Dacromet coating, electrophoresis, PVD, stainless steel natural color, stainless steel passivation, etc.
It is suitable for manual disassembly and assembly, temporary fixing scenarios, equipment maintenance, furniture assembly, etc., without the need for special tools and is easy to operate.
Do you need non-standard fasteners, precision metal parts, or custom structural components for a specific application?
Yongji helps you develop and manufacture special parts and custom products based on your drawings, samples, technical requirements, and target application scenarios.
Whether you need prototype quantities, pilot production, or stable mass supply, we provide an integrated solution from engineering review to production and delivery.
From fasteners to structural parts, Yongji offers integrated development and manufacturing for a wide range of custom precision hardware products.
Whether you need a few pieces for validation, small batches for development, or large volumes for mass production, we can support your project at different stages.
With integrated manufacturing resources in China and Vietnam, Yongji helps customers achieve stable quality, scalable production, and reliable delivery.

Yongji Precision Hardware is a global manufacturer specializing in precision fasteners and metal structural components. We are China Cap Nut Suppliers and Wholesale Cap NutExporter && Company. Founded in 2003, the company has over two decades of experience serving international OEM and ODM customers across multiple industries.
With integrated manufacturing capabilities including cold heading, stamping, CNC machining and sheet metal fabrication...