Recently, Ningbo Ninghe Power Motorcycle Parts Co., Ltd. successfully shipped 5,000 inner pan head triangle fasteners to its clients. These components are destined for the engine casing of FAW-Volkswagen vehicles. What makes this part unique is that it can only be tightened in one direction and cannot be loosened once installed, ensuring a secure and permanent fit. According to Liu Pingping, the manager of procurement and sales at the company, this type of fastener is highly specialized — currently, only two companies in China are capable of producing it.
The company, established in 2010, is based in the Beilun Chunxiao Ecological Industrial Park in Ningbo. As a Sino-foreign joint venture, it specializes in automotive fasteners and has an annual turnover of around 30 million yuan. Its primary clients include FAW-Volkswagen and Audi, with products integrated into core engine components of well-known car brands.
In the automotive industry, quality control is extremely strict. Unlike general manufacturing, where some level of defect is acceptable, auto parts require 100% precision. Liu Pingping explained that during the assembly process, robots handle the installation of fasteners on the production line. If a part doesn't meet the exact size specifications, the robot will fail to pick it up, causing the entire line to halt. This not only leads to significant downtime but also financial losses for the supplier. In some cases, OEMs can charge as much as 2,000 euros for just five minutes of production stoppage.
Given these high standards, the company employs both manual inspections and advanced imaging systems to ensure every single fastener meets the required specifications. Despite the high pressure and risks involved, the profit margin is higher compared to regular fasteners, and orders are stable. Liu Pingping emphasized that strong internal management and attention to detail are key to their success.
In addition to precise dimensions, the sealing performance of fasteners is also crucial, especially in critical engine components. Last year, Ninghe Power developed a special oil plug bolt with an extra layer of adhesive to enhance the seal between the bolt and the engine casing. This design improves heat resistance and prevents the bolt from shrinking or loosening during operation, reducing the risk of oil leakage. The new bolt has already been adopted by Shanghai General Motors in several of its vehicle models.
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