Double-Ended Threaded Precision Adapter Fitting

Please provide 2D/3D drawings specifying thread sizes at both ends, center bore diameter, and hex flat-to-flat dimensions to evaluate machining processes and obtain quotes for custom non-standard parts. The component shown features a typical cylindrical structure with external threads on both ends and an integrated hexagonal section in the middle. It is commonly used in hydraulic and pneumatic systems for straight-through connections, diameter transitions, or as blind plugs, ensuring sealed flow or closure within limited spaces.

The core of manufacturing such rotational parts lies in ensuring the coaxiality of the threads at both ends and the perpendicularity of the hex faces to the axis. This prevents misalignment during assembly, which could lead to seal failure or stress concentration. The machining process strictly controls thread profile integrity, surface finish, and critical fit tolerances. For materials like stainless steel or carbon steel, precision turning using CNC lathes and Swiss-type automatic lathes effectively eliminates cumulative errors from secondary clamping, meeting stringent mechanical connection standards.

Changzhou Senboyu Electric is equipped with Tsugami Swiss-type lathes, Taikan machining centers, and high-precision grinders, supporting multi-process concentrated machining from bar stock to finished products. This is particularly suitable for manufacturing non-standard parts with complex thread features. Combined with inspection tools such as Keyence vision measuring systems, pneumatic gauges, and hardness testers, we strictly screen critical outer diameters, pitch, and appearance details. Surface treatments such as passivation, electroless nickel plating, or electrolytic nickel plating are available to enhance corrosion resistance based on actual operating conditions, providing a one-stop solution from single-piece prototyping to bulk delivery.