Male Pipe Plug Internal Hex Thread Socket

The structural features of the Male Pipe Plug Internal Hex Thread Socket mainly lie in its head design, thread structure and sealing principle. This makes it not only easy to install but also capable of effectively sealing liquids.

（1）Head structure: Internal Hexagonal and countersunk design

①Internal Hexagonal：At the center of the head is an internal hexagonal groove, which can be installed and disassembled using a standard hexagonal wrench.

②Sunk head design: After installation, the plug can be fully submerged into the surface of the equipment, maintaining a smooth overall appearance and preventing the exposed parts from being damaged or loosened due to accidental collisions.

（2）Thread structure: Conical thread

1.Thread standard: The Male Pipe Plug Internal Hex Thread Socket adopts the internationally recognized NPT (60° tooth angle) standard of the American system or the BSP/PT (55° tooth angle) standard of the British system for conical pipe threads.

2.Thread taper: The core feature is a 1:16 thread taper.

3.Processing accuracy: The threads of the Male Pipe Plug Internal Hex Thread Socket have been precisely manufactured and also undergo strict tolerance control to ensure a perfect fit with the interface.

4.Built-in sealing ring: An ED sealing ring will be integrated at the bottom of the thread. This integrated design further enhances the sealing effect and is suitable for systems with extremely 

high precision requirements.

（3）Sealing principle

1.Metal-to-metal sealing: When the internal and external conical pipes with threads are screwed in, the inner and outer conical surfaces will undergo slight metal deformation and closely adhere to each other, forming a complete metal-to-metal seal.

2.Auxiliary sealing: To achieve the best sealing effect, NPT threads usually require the application of anti-sticking agent or the winding of sealing tape (gasket) on the thread surface before installation.

3.Withstanding high pressure: This robust metal-to-metal sealing structure is mostly used in fields where extremely high pressure is required.

Q&A

（1）Do you provide a torque specification chart with each order?

Yes, the shipment will provide an installation torque recommendation table. It may also be printed on the product packaging and sent as an electronic version.

（2）Can these Male Pipe Plug Internal Hex Thread Socket be used in high-vibration environments?

Sure, but it is recommended to use threaded locking adhesive (such as Loctite 243/262) for installation, which will provide better anti-loosening effect in high-vibration environments.