Carbon Steel / Stainless Steel Threaded Tube Custom For Mechanical Fastening

Headed threaded tubes are metal pipe fittings with special structures at both ends, playing a crucial role in various mechanical connections and fastening scenarios. In terms of appearance, one end has a head structure, usually in shapes like circular, square or other specific forms, which provides a supporting surface or facilitates assembly operations. The other end is processed with threads, namely "teeth", allowing it to be screwed and connected with nuts or components with internal threads. As shown in the provided pictures, the headed threaded tubes are generally cylindrical, with smooth surfaces, uniform metal color, and a natural transition between the head and the threaded part.

1. Material Selection
   Common manufacturing materials for headed threaded tubes include carbon steel, stainless steel, and alloy steel. Carbon steel - made headed threaded tubes have low costs, with certain strength and toughness, suitable for general industrial environments and civilian fields, such as parts connection of ordinary machinery. Stainless steel - made ones, due to their excellent corrosion - resistance, are widely used in scenarios with high corrosion - resistance requirements like food processing, medical devices, and marine engineering, effectively resisting the erosion of corrosive media such as acids, alkalis, and salt spray. Alloy steel - made headed threaded tubes perform well in terms of strength, hardness, and wear - resistance, suitable for mechanical connections under heavy loads and high stresses, like parts assembly of mining machinery and heavy - duty vehicles.
2. Manufacturing Processes

• Heading Process: The head shape of one end of the metal bar is processed through cold heading or hot heading processes. The cold heading process has high production efficiency, good dimensional accuracy, and excellent surface quality, suitable for mass production with high head precision requirements. The hot heading process is applicable for processing larger - sized or higher - hardness materials, reducing the deformation resistance of materials.
• Thread Processing: Cutting, rolling, etc. can be adopted. Cutting processing can obtain threads with high precision but has relatively low production efficiency. Rolling processing has high production efficiency, and the threads have good strength and surface quality, capable of improving the fatigue strength of threads, widely used in mass production.

The specifications of headed threaded tubes are mainly determined by pipe diameter, length, and thread specifications. Common pipe diameters include M6, M8, M10, etc. (M here represents ordinary metric threads). The length can be customized within a certain range according to customer needs, from dozens of millimeters to hundreds of millimeters. For example, in the small mechanical structure of electronic equipment, headed threaded tubes with a pipe diameter of M4 and a length of 20mm may be used; while in the field of building decoration, for fixing plates, headed threaded tubes with a pipe diameter of M12 and a length of 100mm may be used. Parameters such as the pitch and thread angle of threads will also be designed according to different application scenarios and standards.

1. Fastening of Connection
   After the threaded part is screwed with nuts or components with internal threads, it can provide reliable fastening force, ensuring that the connected components will not loosen during operation. In mechanical equipment with large vibrations, such as the parts connection of an engine, the fastening performance of headed threaded tubes can ensure the stable operation of the equipment.
2. Strength and Durability
   Depending on different materials and manufacturing processes, headed threaded tubes have corresponding strength and durability. Alloy steel - made ones can withstand large tensile and shear forces, not easily deformed or broken under heavy - load working conditions. Stainless steel - made ones can maintain good performance for a long time in harsh environments, prolonging the service life.
3. Convenience of Assembly
   The head structure design facilitates assembly operations using tools such as wrenches and screwdrivers, which can be quickly tightened or loosened. In some occasions requiring frequent disassembly and installation, such as equipment maintenance and debugging processes, the convenient assembly feature of headed threaded tubes can greatly improve work efficiency.

1. Mechanical Manufacturing Industry
   Widely used in parts connection of various mechanical equipment, such as machine tools, automobiles, motorcycles, etc. In the assembly of an automobile engine, headed threaded tubes are used to fix components like the cylinder head and oil pan of the engine, ensuring the normal operation of the engine.
2. Electronic Equipment Manufacturing
   In the assembly of chassis and cabinets of electronic equipment, headed threaded tubes are used to connect various boards, brackets, etc. Due to their high dimensional accuracy and good appearance quality, they will not interfere with the performance of electronic equipment.
3. Building Decoration Field
   Can be used for fixing doors, windows, decorative plates, etc. For example, in interior decoration, headed threaded tubes are used to fix decorative panels on wall keels, ensuring both the firmness of connection and good aesthetics.
4. Furniture Manufacturing
   Used for parts connection of furniture, such as the connection between legs and table - tops of tables and chairs, the installation of drawer slides, etc., which can make the furniture structure more stable and facilitate disassembly and transportation.

1. Dimensional Accuracy Inspection
   Precision measuring tools such as calipers and micrometers are used to measure the pipe diameter, length, thread size, etc., ensuring that the product dimensions meet the design requirements.
2. Appearance Quality Inspection
   Visual inspection is carried out to check whether there are defects such as cracks, scratches, and burrs on the surface of headed threaded tubes, ensuring good appearance quality of products.
3. Thread Quality Inspection
   Thread plug gauges are used to detect the precision and compatibility of threads, ensuring that threads can be smoothly screwed with corresponding nuts or components with internal threads.
4. Mechanical Performance Inspection
   For products with high strength requirements, tensile tests, hardness tests, etc. will be carried out to verify whether their mechanical properties meet the standards.