M8 connector is a compact circular connector with an 8 mm threaded coupling widely used in industrial automation, sensors, and control systems. It provides secure signal or power connections in environments where space is limited and reliability is important.
Key Characteristics
*Threaded locking (M8 × 1.0)
The connector uses a metric threaded coupling that prevents accidental disconnection in vibrating environments such as machinery or robotics.
* Small and compact design
M8 connectors are smaller than M12 connectors, making them ideal for:
Miniature sensors
Compact equipment
Tight installation spaces
*Multiple pin configurations
Common pin counts include:
3-pin
4-pin
5-pin
6-pin
8-pin
Different pin layouts support sensor signals, power, or data transmission.
*Coding types
The most common is A-coding, used for sensor and actuator connections.
Examples:
A-coded – sensors, I/O signals
B-coded – fieldbus communication (less common)
*High protection ratings
Many M8 connectors offer IP67 or IP68 waterproof protection, allowing them to operate in:
Dusty factories
Outdoor equipment
Washdown environments
