Flange Nut Manufacturing Process: How Flange Nuts Are Made
The flange nut manufacturing process plays a key role in determining product strength, dimensional accuracy, and fastening reliability. As a commonly used fastener in machinery, automotive, construction, and industrial applications, flange nuts require stable production processes and strict quality control.
As a professional flange nut supplier, Xinchi is pleased to introduce a complete overview of how a flange nut is manufactured, from raw material to finished product.
Flange Nut Raw Material Preparation
The manufacturing of a flange nut begins with suitable raw materials. Common materials for flange nuts include carbon steel, alloy steel, and stainless steel, selected according to strength grade and corrosion resistance requirements.
Before entering production, raw material wire is inspected for chemical composition and diameter consistency to ensure it meets the cold heading requirements of flange nut production.
Flange Nut Cold Heading and Forming Process
Cold heading is the most critical step in the flange nut manufacturing process. Using multi-station cold heading machines, the basic shape of the flange nut is formed, including the nut body and the integrated flange.
Compared with machining processes, cold heading improves material utilization and enhances the overall strength of the flange nut by preserving metal fiber flow, making it suitable for high-volume production.
Flange Nut Piercing and Shaping
After cold heading, the internal hole of the flange nut is pierced and shaped to achieve accurate dimensions. This process ensures the flange nut is properly prepared for thread tapping.
For serrated flange nuts, the serrations are usually formed during this stage, providing additional anti-loosening performance during installation.
Flange Nut Thread Tapping Process
Thread tapping determines how smoothly a flange nut assembles with bolts. Automatic tapping machines are used to form precise internal threads according to standard specifications.
During this stage, flange nut threads are checked using go/no-go gauges to ensure correct pitch, thread depth, and reliable fastening performance.
Flange Nut Heat Treatment for Strength Control
For flange nuts with higher mechanical requirements, heat treatment is applied after tapping. Processes such as quenching and tempering improve hardness, wear resistance, and load-bearing capacity.
Proper heat treatment ensures that the flange nut meets the required strength grades for demanding industrial applications.
Flange Nut Surface Treatment Options
Surface treatment is applied to flange nuts to improve corrosion resistance and service life. Common surface finishes include zinc plating, black oxide, nickel plating, and Dacromet coating.
The choice of surface treatment depends on the application environment and customer requirements for the flange nut.
Flange Nut Inspection and Packaging
Before delivery, flange nuts undergo strict quality inspection. This includes dimensional checks, thread inspection, surface quality control, and mechanical property sampling.
Qualified flange nuts are then packaged according to customer requirements, ready for shipment to different global markets.
Xinchi Advantages as a Professional Flange Nut Manufacturer
Xinchi Fastener Co., Ltd. is a professional flange nut manufacturer with strong large-scale production capability. The factory operates a total of 102 cold heading machines, enabling a daily output of over 10 million fasteners, including flange nuts and other standard and customized fastener products.
To support continuous growth and high-volume orders, Xinchi has invested in a new factory covering 30,000 square meters, consisting of two six-story production buildings. This modern manufacturing base allows Xinchi to efficiently manage cold heading, tapping, surface treatment, inspection, and packaging processes.
As a trusted fastener supplier, we offer a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, and washers. Xinchi ensures efficient manufacturing, reliable supply, and fast delivery. With advanced equipment and professional technical teams, Xinchi delivers reliable fastening solutions that meet international standards and diverse industrial requirements.
With mature manufacturing processes, strict quality control, and reliable delivery capability, Xinchi provides stable and cost-effective flange nut solutions for global customers seeking a long-term fastener supplier.