M9 Connector, M Series Connector
M9 Connector, M Series Connector
Features
-Series: M Series Connector (Metric Circular Connector)
-Model: M9 Connector
–Available in 2, 3, 4, 5, 7, and 8 poles, offering high-density signal transmission in an ultra-compact footprint
-Gender: Male and Female (Plug & Receptacle / Panel Mount)
–Features a 9mm outer thread diameter, making it one of the smallest threaded connectors—perfect for space-constrained devices
–Manufactured for high-accuracy signal transmission in medical devices, laboratory equipment, and miniature sensors
– IP67 waterproof rating when mated, providing reliable protection against dust, moisture, and temporary immersion
–The M9 x 0.5 threaded locking mechanism ensures a stable, vibration-resistant connection that prevents accidental decoupling
-Available in nickel-plated brass or high-quality polymers, providing excellent mechanical strength and EMI/RFI shielding options
– Supports various termination styles, including solder and PCB dip, to simplify integration into compact circuit boards and handheld devices
-Designed for high mating cycles, ensuring long-term reliability in precision measurement and testing applications
- sales@connector-sensor.com
- +86 15120067961
M9 Circular Connectors, Male & Female Precision Plug, 9mm Metric Thread, IP67 Waterproof for Compact Instrumentation
What is M9 Connector?
M9 connectors are metric circular connectors with a 9 mm outer thread diameter. Our M9 connectors are manufactured in strict accordance with high-precision processes, ensuring seamless compatibility and stable transmission in sophisticated applications such as high-end sensors and medical devices.
Advantages of M9 Connectors
Ultra-Compact Design
M9 connectors provide a significant space-saving advantage (approx. 50% smaller than M12), ideal for handheld devices and micro-sensors.
High-Density Signal
Offers up to 8 pins in a 9mm shell, allowing for complex signal transmission in minimal space.
Robust Threaded Locking
Threaded locking mechanisms ensures the connector remains secure even under vibration and accidental pulls.
Excellent Sealing
Provides IP67-rated protection, shielding internal electronics from dust and temporary immersion in water.
Main Types of M9 Connectors
| M9 2 Pin Connector |
| M9 3 Pin Connector |
| M9 4 Pin Connector |
| M9 5 Pin Connector |
| M9 7 Pin Connector |
| M9 8 Pin Connector |
Details of M9 Connectors
| Parameter | Specification |
| Series: | M Series Connector |
| Model: | M9 Connector |
| Industry Standards: | Built to high-precision Subminiature Standards |
| Number of Contacts: | 2, 3, 4, 5, 7, 8-Pin |
| Orientation: | Straight or Right Angle |
| Gender: | Male & Female Socket Sets |
| Coding Options: | Standard Subminiature Pin Assignment |
| Cable Length: | 0.5m – 10m (Customizable) |
| Operating Temperature: | -20°C ~ +85°C |
| Rated Voltage: | 30V to 125V (Pin count dependent) |
| Current Rating: | 1A to 4A (Typically lower for higher pin counts) |
| Contact Resistance: | ≤3 mΩ |
| Insulation Resistance: | ≥100 MΩ |
| NEMA Rating: | IP40 (Indoor), IP67 (Outdoor) |
| Locking Style: | Threaded Locking (M9 x 0.5) |
| Mating Cycles: | > 500 Cycles |
| Housing Material: | Nickel-plated Brass, PA66 Plastic, or Alloys |
| Contact Plating: | Gold-plated over Copper Alloy |
| Certification: | CE, RoHS, UL |
M9 Connector Selection Guide
| Pin Count | Primary Function | Typical Applications |
| 2-4 Pin | DC Power / Basic Signal | Micro-sensors, LED lighting, DC power |
| 5-8 Pin | Data & Multi-signal | Lab instruments, Medical monitors, Handheld GPS |
Typical Applications

Medical Device Manufacturing (Patient monitors, handheld diagnostics)
Precision Instrumentation & Control
Micro-Sensors & Actuators
Laboratory & Analytical Equipment
Compact Robotics & Drone Electronics
Telecommunications & Audio Systems
Security & Miniaturized Surveillance
Huada Group – Your Professional Connector Manufacturer In China

Huada is a professional connector manufacturer integrating R&D, design, and manufacturing. We are ISO 9001 certified, ensuring standardized design, production, and testing processes. For over 20 years, huada has been committed to providing one-stop connector solutions for various industries.
Our modern factory is powered by advanced automation, featuring state-of-the-art equipment like automatic welding machines, precision crimping systems, and automated assembly lines. We have a complete production line from processing and assembly to testing, enabling efficient and large-scale automated production.
At huada, we provide 24/7 online professional technical support and comprehensive sales services, including selection guidance, drawing support, project follow-up, and after-sales service. Want to learn more about our M9 connector? Please contact huada at +86-152120067961 or email sales@connector-sensor. com for more information.
Related Products:
| M5 Connector |
| M8 Connector |
| M12 Connector |
| M23 Connector |
| M40 Connector |
Send Message to get Datasheet.
Strict Production Process
Engineers develop optimized electronic circuits and structural designs based on real application needs.
High-quality components and materials are carefully selected from trusted suppliers to ensure long-term reliability.
Automated SMT and precision soldering technologies are used to build stable and high-performance circuit boards.
Sensor elements or connector terminals are assembled with the PCB and housing to ensure accurate operation and strong mechanical stability.
Each product undergoes strict calibration and functional testing to guarantee accuracy and stable performance.
Every unit is carefully inspected, labeled, and securely packaged to ensure it arrives safely and performs reliably for your applications.
Strict Production Process of Yafeite







