Metal Buckles and Fasteners

The Metal Buckles and Fasteners is a combined structural component designed to perform both fixing and locking functions within a single part. The rigid body provides structural support, while the elastic arm is responsible for the locking action.

SPCC steel is commonly used for the main body due to its stable rigidity and forming performance. The elastic arm is typically made from SUS301 stainless steel, which provides reliable springback behavior after repeated deformation. Material selection can be adjusted independently for each section depending on the application requirements. For higher load capacity, the main body can be produced in heavy-duty carbon steel. For improved fatigue resistance, the elastic arm can also be manufactured using beryllium copper.

Standard thickness is 1.2 mm for the main body and 0.8 mm for the elastic arm. These values can be adjusted separately according to design requirements.

Performance testing shows a locking tension of more than 55 kg. Fatigue testing confirms that the elastic arm remains functional after 300,000 cycles without fracture. Under a usage condition of one cycle per day, this corresponds to a theoretical service life far beyond normal industrial requirements. While actual applications differ, long-term durability is considered a key design factor.

Coaxiality is controlled within 0.1 mm, ensuring that the buckle and fastener remain aligned after installation without visible deviation.

Standard surface treatment is 8 μm electro nickel plating, providing corrosion resistance that passes a 120-hour salt spray test without visible rust. Alternative finishes such as gold plating, zinc plating, and black oxide treatment are also available depending on environmental requirements.

The component can be manufactured as either an integrated structure or a two-piece assembly, depending on assembly design and functional needs. Tooling design focuses on controlling the ejection sequence, which is critical for ensuring stable demolding in complex composite structures.

Small batch production is supported, and complex samples are typically completed within 5–10 days. Samples are provided for customer approval before mass production begins.

Production terms including FOB and EXW are supported. If any verified quality issue occurs within three months, corrective actions including rework or replacement are handled by the factory.