
This product features a press-fit serrated thread + screw structure, cold-forged, with the serrated thread embedded in the sheet metal part. After press-fitting, it is firmly fixed with precision threads, enabling spaced support of sheet metal parts and adapting to automated assembly. The full range covers mainstream systems, is readily available, has rust-proof surface treatment, passes quality control, complies with environmental regulations, and compliance documentation can be provided. Custom lengths and thread specifications are supported.
Industry-standard US PEM standards (BSO/BSOS/BSOA/SO/SOS/SOA series); Chinese national standard GB/T 17880.3; international standard ISO 13918; German standard DIN 7340;
Metric specifications: Internal thread sizes M2~M10, nominal length 3mm~50mm, suitable for sheet metal thickness 0.5mm~6mm, divided into four main categories: through hole type, blind hole type, round type, and hexagonal type; Imperial specifications: Internal thread sizes #2-56~5/16"-18, nominal length 1/8"~2", suitable for UNC/UNF American standard thread systems, suitable for sheet metal thickness 0.02"~0.25".
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 parts, electronic equipment, chassis and cabinets, etc., are adapted to the spacing and support connection of the panels. They are fixed by press riveting, which is highly efficient for automated assembly and does not require additional fastening.
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 Self-Clinching Studs Suppliers and Wholesale Self-Clinching StudsExporter && 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...