Material: 304 stainless steel

Regarding the sizes: I uploaded an infographic of all the sizes, selecting the corresponding size will jump to the corresponding size information

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Metric M Series Hexagonal Threaded Plugs are commonly used as capping or sealing elements in mechanical devices, hydraulic and pneumatic systems, automotive manufacturing, and household equipment**. Specifically as follows:

1. mechanical installations: where there is a need to close off the end of a pipe or to terminate a component, hexagon socket threaded plugs ensure the integrity of the assembly and provide structural support.
2. hydraulic and pneumatic systems: in hydraulic and pneumatic systems, plugs are used to close off unused passages or ports to prevent leakage of liquids or gases.
3. automotive manufacturing: many fluid systems in automobiles utilise threaded plugs to ensure that the system is airtight and to prevent leakage of oil or other fluids.
4. household equipment: household appliances or equipment may also use hexagonal threaded plugs to close unused ports or provide a base for assembly.

The advantages of metric M series hexagonal threaded plugs include easy installation, good sealing performance, and reliable fixing**. Specifically as follows:

- * Easy installation: the hexagonal design allows the plug to be easily screwed in by a spanner for easy installation and removal.
- Good sealing performance: the hexagonal structure of the plug can provide good torque transmission, combined with the appropriate gasket can form a good sealing effect.
- Reliable fixing effect: As the hexagonal hole is not easy to slide, the threaded plug, once tightened, is not easy to loosen even in a vibration environment.

These advantages make metric M series hexagonal threaded plugs very useful in applications where a closed line or port is required and where a solid and leak-proof connection is required.