Zhejiang Huayuan’s Self-Lubricating Nut Patented

[Abstract]:Zhejiang Huayuan obtained a utility model patent for self-lubricating clinch nuts. The product addresses the pain point of conventional lubrication limited only to sheet surfaces and achieves full thread lubrication via grease storage grooves and inte

Recently, good news of a technological breakthrough came from the fastener industry—Zhejiang Huayuan (Stock Code: 301535) has been newly granted a utility model patent by the China National Intellectual Property Administration (CNIPA). The patent is named "Self-Lubricating Press-Riveting Nut" (Patent Application No.: CN202521943843.5, Authorization Date: October 14, 2025). This patent innovatively solves the lubrication limitations of traditional press-riveting nuts, providing a new solution for the upgrading of fastener assembly processes. The concurrently disclosed Q3 revenue data further validates the effectiveness of the company's innovation-driven development.

In fastener assembly scenarios, lubrication effectiveness directly impacts assembly efficiency and connection reliability. Traditional press-riveting nut lubrication methods have obvious shortcomings; they can only lubricate the surface of the sheet metal, failing to effectively meet the lubrication needs of the threaded mating area between the bolt and the nut. This often leads to high assembly resistance and severe thread wear, which can compromise the stability of the connection structure over long-term use. The self-lubricating press-riveting nut developed by Zhejiang Huayuan precisely targets this industry pain point.

According to the patent abstract, the core structure of this self-lubricating press-riveting nut includes four key parts: the nut body, protrusions, grooves, and connecting channels. The protrusions are used to insert into the through-holes or threaded holes of the components to be connected, achieving basic positioning and connection. The grooves arranged around the circumference of the protrusions serve as carriers for storing grease, providing the necessary material for lubrication. Crucially, several connecting channels set at the edges of the protrusions create a transmission path for the grease. When the nut body deforms, the grease inside the grooves is squeezed through the connecting channels to the ends and edges of the protrusions. During the tightening process of the bolt and the press-riveting nut, this provides comprehensive, dead-angle-free lubrication coverage for the bolt.

Industry technicians point out that the innovative value of this patent is reflected in three aspects: First, the lubrication range is extended from the "sheet metal surface" to the "threaded mating surface," achieving full-process lubrication during assembly and significantly reducing assembly resistance and component wear. Second, the grease is automatically squeezed and delivered through structural deformation, eliminating the need for additional manual application of lubricants and enhancing the level of assembly automation. Third, it is adaptable to various complex assembly scenarios, holding significant value for fields with high assembly precision requirements, such as new energy vehicles and high-end equipment.

The realization of this patent achievement is no accident; Zhejiang Huayuan's continuous R&D investment has provided solid support for technological innovation, which is also reflected in the company's operational performance. According to the latest financial data queried by Chinese Screw Net, Zhejiang Huayuan delivered an impressive performance in the third quarter of 2025, with a single-quarter operating revenue of 197,361,070.61 RMB, a year-on-year increase of 16.72%. From the beginning of 2025 to the end of the third quarter, the company's cumulative revenue reached 540,925,607.07 RMB, with a year-on-year increase of up to 18.64%.

Industry insiders state that Zhejiang Huayuan's revenue growth and technological innovation have formed a positive interaction. On one hand, the R&D of innovative products like the self-lubricating press-riveting nut has enriched the company's product line structure and enhanced its competitiveness in the high-end fastener market, injecting new momentum into revenue growth. On the other hand, steadily growing revenue provides financial guarantees for R&D investment, helping the company continuously overcome technical challenges. This development model of "innovation driving growth, growth feeding back into innovation" provides a replicable template for the transformation of small and medium-sized enterprises in the fastener industry.

Currently, the rapid development of downstream industries such as new energy vehicles and high-end equipment manufacturing has placed higher demands on the performance of fastener products. A relevant person in charge at Zhejiang Huayuan revealed that the newly patented self-lubricating press-riveting nut has completed small-batch trial production and will gradually be brought to market, with a key focus on high-end application areas such as automotive parts and precision electronics. With the market implementation of this technological achievement, it is expected to further drive the company's revenue growth while contributing significant strength to the lubrication technology upgrade of the fastener industry.

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Zhejiang Huayuan’s Self-Lubricating Nut Patented

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