
This product features a hollow riveting structure, made of carbon steel/stainless steel. After riveting, it expands and locks securely onto the workpiece. It has a standard internal thread for use with bolts, making installation convenient and the connection strong, requiring no back-side operation. The full range includes countersunk and round head types, all readily available. The surface is rust-proofed, meets quality control standards, and complies with environmental regulations. Compliance documentation can be provided. Custom sizes and types are supported.
Chinese National Standard GB/T 17880; International Standard ISO 13918; American Standard IFI 146, ANSI/ASME B18.29.2; German Standard DIN 7340;
Metric specifications: Thread sizes M2~M16, suitable for sheet metal thicknesses of 0.5mm~12mm, including flat head, countersunk head, small countersunk head, semi-hexagonal, full hexagonal, through hole, and blind hole types; Imperial specifications: Thread sizes #4-40~5/8"-11, suitable for 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.
Thin sheets, sheet metal parts, chassis and cabinets, automotive parts, etc., are suitable for scenarios where there is no space for operation on the back. They are fixed by riveting tools, without welding, and can be quickly locked.
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 Rivet Nuts / Blind Nuts Suppliers and Wholesale Rivet Nuts / Blind NutsExporter && 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...