
Flat-head knurled rivet nuts are precision fasteners made of high-quality low-carbon steel, medium-carbon steel, alloy steel, 304 stainless steel, 316 stainless steel, brass, aluminum alloy, and other materials, belonging to the riveting component category. They feature a cylindrical flat-head structure, an anti-slip knurled shank, and a metric machine thread in the inner hole, with common sizes ranging from M3 to M10. These nuts offer various strength grades: carbon steel up to 4.8, 6.8, and 8.8; stainless steel A2-50, A2-70, A4-70, and A4-80; and non-ferrous metals at least 4.8. A variety of surface treatments are available, including environmentally friendly blue-white zinc plating, color zinc plating, black zinc plating, environmentally friendly nickel plating, zinc-nickel alloy plating, Dacromet coating, electrophoresis, PVD, stainless steel natural finish, and stainless steel passivation. They are suitable for riveting and fixing sheet metal parts, assembling automotive components, installing electronic device housings, connecting home appliances, and assembling communication equipment.
GB/T 3098.19、ISO 15978、DIN 7337、IFI 114, We support customized production based on customer-provided drawings or industry standards.
Available grades: Carbon steel 4.8/6.8/8.8/10.9/12.9; Stainless steel A2-50, A2-70, A4-70, A4-80
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.
Sheet metal riveting and fixing, automotive parts assembly, electronic device housing installation, home appliance connection, and communication equipment assembly.
Automotive-specific parts, electronic-specific parts, and communication-specific parts
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 Flat Head Knurled Rivet Nut Suppliers and Wholesale Flat Head Knurled Rivet 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...