B2B Electronic Connection Solution
M8 CONNECTOR B CODE SOCKET FIELD INSTALLATION 5PIN FEMALE SOLDER PINS STRAIGHT
Factory-backed connector sourcing and electric connection support for OEMs, distributors and electronic equipment manufacturers.
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Product Specifications
Key parameters for OEM, distributor and engineering evaluation.
- Series
- M8
- Connector Type
- Receptacle, Female Sockets
- Number of Positions
- 5
- Shell Size - Insert
- M8-5
- Mounting Type
- Free Hanging (In-Line)
- Mounting Feature
- Bulkhead - Rear Side Nut
- Termination
- Screw
- Fastening Type
- Threaded
- Orientation
- B
- Primary Material
- Plastic
- Shell Material
- Polyamide (PA), Nylon
- Shell Finish
- Nickel
- Contact Finish - Mating
- Gold
- Color
- Black
- Ingress Protection
- IP67 - Dust Tight, Waterproof
- Material Flammability Rating
- UL94 V-0
- Features
- Coupling Nut
- Shielding
- Shielded
- Current Rating (Amps)
- 3A
- Voltage Rating
- 30V
- Cable Opening
- 0.138" ~ 0.197" (3.50mm ~ 5.00mm)
- Operating Temperature
- -40°C ~ 85°C
Product Details
Overview and Application Notes
What is an M8 Connector?
An M8 connector is a compact circular electrical connector with an
8 mm threaded locking mechanism. Designed for industrial automation,
factory equipment, sensors, actuators, robotics, and control systems, M8 connectors
provide reliable signal and power transmission even in harsh environments.
Their small size, vibration-resistant threaded coupling, and waterproof construction
make M8 connectors one of the most popular interconnect solutions in modern industrial
applications.
What Does “M8” Mean?
The designation “M8” refers to the connector’s metric thread diameter of
8 millimeters. Unlike USB or HDMI connectors, M8 connectors use
a screw-locking mechanism that prevents accidental disconnection caused by vibration
or movement.
They are standardized under the IEC 61076 series, allowing products from different
manufacturers to be compatible with one another.
Main Features of M8 Connectors
- Compact 8 mm threaded circular design
- Reliable screw-lock locking mechanism
- Excellent vibration resistance
- IP65, IP67, IP68, and IP69K waterproof options
- Shielded and unshielded versions
- Straight and right-angle configurations
- Suitable for signal, communication, and low-power transmission
- Available as cable assemblies or panel-mount connectors
M8 Connector Pin Configurations
| Pin Count | Typical Applications |
|---|---|
| 3 Pin | DC sensors and switches |
| 4 Pin | Industrial sensors, proximity switches |
| 5 Pin | Actuators and analog signals |
| 6 Pin | Industrial communication |
| 8 Pin | I/O devices and control signals |
M8 Connector Types
Male M8 Connector
The male connector contains exposed metal pins and plugs into a female receptacle.
Female M8 Connector
The female connector contains sockets that receive the male pins while protecting
the contacts from damage.
Panel Mount M8 Connector
Installed on equipment enclosures, PLCs, industrial controllers, and sensor boxes.
Molded Cable Assembly
Factory overmolded cable assemblies provide excellent strain relief, waterproofing,
and long service life.
Common Coding Types
| Coding | Application |
|---|---|
| A-Code | Sensors and actuators |
| B-Code | Fieldbus communication |
| D-Code | Industrial Ethernet |
Where are M8 Connectors Used?
M8 connectors are widely used in industrial automation because they combine compact
size with dependable electrical performance.
- Industrial sensors
- Photoelectric sensors
- Proximity switches
- Pressure transmitters
- Temperature sensors
- Servo motors
- Robotics
- Packaging machinery
- Food processing equipment
- Medical equipment
- Factory automation
- PLC systems
- Industrial Ethernet networks
Why Choose M8 Instead of Larger Connectors?
Space inside modern industrial equipment is becoming increasingly limited.
The M8 connector offers excellent electrical performance while occupying much
less installation space than larger circular connectors such as M12 connectors.
M8 Connector Advantages
- Small footprint for compact equipment
- Fast installation
- Secure threaded locking
- High reliability
- Excellent waterproof performance
- Long service life
- Compatible with industrial standards
- Easy replacement and maintenance
M8 vs M12 Connector
| Feature | M8 Connector | M12 Connector |
|---|---|---|
| Thread Size | 8 mm | 12 mm |
| Size | Compact | Larger |
| Typical Use | Sensors | Industrial networking |
| Current Capacity | Lower | Higher |
| Installation Space | Limited spaces | Larger equipment |
How to Select the Right M8 Connector
When choosing an M8 connector, engineers should consider:
- Required pin count
- Voltage and current ratings
- Cable length
- Straight or right-angle connector
- Waterproof IP rating
- Shielded or unshielded cable
- Panel mount or cable mount
- Operating temperature
Frequently Asked Questions
Are M8 connectors waterproof?
Yes. Most industrial M8 connectors provide IP67 or higher protection when properly
mated.
Can M8 connectors carry power?
Yes. Besides signal transmission, many M8 connectors are designed for low-power
applications such as sensors, actuators, and control devices.
What is the difference between M8 and M12 connectors?
M8 connectors are smaller and commonly used for compact sensors, while M12 connectors
support higher power, more pins, and industrial networking applications.
Conclusion
M8 connectors have become a standard solution for compact industrial connectivity.
Their robust threaded locking mechanism, waterproof performance, and compatibility
with international standards make them ideal for sensors, automation systems,
robotics, medical equipment, and industrial control applications.
Selecting the correct pin configuration, coding type, and IP rating ensures reliable
performance and long service life in demanding environments.
Product Document
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Use this document for internal review, engineering comparison, and RFQ preparation.
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Include These Details in Your RFQ
- 1 Target quantity, annual forecast, and delivery destination.
- 2 Drawing, datasheet, sample photo, or current supplier part number.
- 3 Electrical, mechanical, compliance, testing, and packaging requirements.
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