A metric plug is a type of threaded fastener used to seal an opening in a component or device. Metric plugs typically have a threaded design, which allows them to be easily screwed into place using a compatible tool such as a wrench or pliers.

Attributes:
•Designed to provide a secure and reliable seal for openings in components or devices.
•Flange for added support, or a captive design that prevents the plug from getting lost when removed.
•Different head styles, such as hexagonal, round, or square, depending on the application and the tool required to install or remove them.

Applications:
Metric plugs are commonly used in applications to seal openings in engines, transmissions, and other components.