M5 Connectors

Features

Series: M Series Connector
Pin Configurations: 2, 3 and 4 poles available
Gender: Male and Female (Plug & Receptacle)·
Contacts: Gold-plated for long-term reliability
Coding: Available in A-Code to support sensors, power, and low-speed data / IO-Link communication
Standard: Fully compliant with IEC 61076-2-105 for seamless cross-brand compatibility
Ingress Protection: IP67 waterproof rating, providing superior protection against dust, moisture, and high-pressure wash-downs
Locking: Threaded locking mechanism allows for secure, vibration-resistant connections
Certifications: Compliance with RoHS, CE, and UL ensures superior quality

M5 Connectors – Miniature IP67 Circular Connectors & Cable Assemblies

Looking for compact, vibration-proof miniature signal plugs for narrow-space automation? Our M5 connector, also called M5 circular connector or M5 electrical connector, adopts standard 5 mm metric threaded locking design, fully compliant with IEC 61076-2-105 international specs, and perfectly interchangeable with binder M5 connector. We supply complete M5 cable connector sets (male & female aviation plug) with IP67/IP68 waterproof performance, plus matched hardware like M5 connector nut, M5 connector bolt and M5 joint connector nut for panel installation.

Key Advantages of Our M5 Waterproof Connector

Ultra-Compact 5mm Thread Body
The smallest metric circular connector on the market, ideal for cramped equipment spaces where M8/M12 connectors cannot fit; drastically reduces cabinet & sensor mounting volume.

IP67 / IP68 Waterproof & Dustproof
Our M5 waterproof connector resists moisture, workshop oil splashes and fine dust; stable for outdoor automation and harsh factory production lines.

Anti-Vibration Thread Locking System
Equipped with matched M5 connector nut and M5 connector bolt, tight screw locking prevents loose disconnection during robotic operation or equipment long-term vibration.

Gold-Plated Contact, Stable Signal Transmission
Copper alloy pins with thick gold plating keep contact resistance ≤5mΩ; no signal loss for proximity sensors, photoelectric sensors and miniature encoders.

Fast Tool-Free On-Site Installation
Straightforward plug-and-play structure, significantly cuts your equipment wiring downtime and labor cost.

Full Customization Support
Custom cable length (0.5m–20m), PVC/PUR cable jacket, straight / right angle outlet and shielded housing for unique OEM project demands.

Multi-Certified Industrial Grade
CE, RoHS and UL certified, meets global electrical safety standards for export to EU, North America and Southeast Asia.

Main Types of M5 Connectors

By Pin Count

M5 2 Pin Connector: Simple two-wire signal transmission for micro switches
M5 3 Pin Connector: Single power + signal for compact proximity sensors
4-pin M5 electrical connector / M5 4 pin connector / M5 connector 4 pin: Bestseller, dual power + dual signal for most industrial micro sensors

By Gender & Cable Outlet

Male M5 Connector / Female M5 Connector: Complete mating sets
Straight M5 Cable Connector (180° inline molded cable plug)
Right Angle 90° M5 Connector: Space-saving vertical wiring for narrow equipment cavities

By Installation Type

Cable Mounted M5 Connector: Pre-overmolded cable assembly, ready for direct sensor wiring
Panel Mounted M5 Connector: Front/back panel installation, supporting M5 connector nut & bolt fixation
PCB Mounted M5 Connector: Solder pin socket for internal circuit board integration

Supporting Hardware & Auxiliary Parts

M5 connector nut, M5 joint connector nut, M5 connector bolt: Full mounting fasteners for all panel mount M5 sockets
Shielded M5 circular connector: Metal nickel-plated housing to block EMI interference for high-frequency signal equipment

M5 Connector Specifications

Parameter	Standard Specification
Series	M Series Miniature Circular Connector
Model	M5 Electrical Connector
Executive Standard	IEC 61076-2-105
Contact Options	2 Pin / 3 Pin / 4 Pin
Cable Outlet Shape	Straight / Right Angle 90°
Gender	Male Plug / Female Socket
Custom Cable Length	0.5 m – 20 m, customizable PVC / PUR jacket
Operating Temperature	-25°C ~ +80°C
Rated Voltage	30 V – 60 V DC
Rated Current Per Pin	2 A (4 Pin) / 3 A (2, 3 Pin)
Contact Resistance	≤ 5 mΩ
Insulation Resistance	≥ 100 MΩ
Protection Grade	IP67, IP68
Locking Method	Metric Thread Lock (M5×0.5)
Mating Lifespan	≥ 1000 Cycles
Housing Material	Nickel-Plated Brass / Stainless Steel
Contact Plating	Gold Plated Copper Alloy
Certifications	CE, RoHS, UL

Industrial Applications of M5 Circular Connector

Our M5 cable connector delivers reliable low-current signal connection across multiple industries:

Precision Sensing Equipment
Perfect fit for inductive, capacitive, photoelectric miniature sensors, realizing high-density compact sensor network layout.

Micro Compact Robotics & EOAT
Lightweight robotic grippers, miniature actuators and end-of-arm tooling for automated assembly lines.

Medical & Laboratory Automation
Space-saving wiring for diagnostic instruments, lab test modules and miniature detection devices.

IIoT & Smart Factory Industry 4.0
Stable data transmission for micro I/O modules, distributed field sensors and intelligent monitoring nodes.

Compact Outdoor Unmanned Systems
Vibration-resistant M5 waterproof connector for small drones, miniature navigation and sensing modules in outdoor environments.

Automated Test Equipment (ATE)
Low-loss signal transmission for portable measurement instruments and bench test devices.

Outdoor Automated Equipment
IP67 waterproof performance for outdoor monitoring sensors, agricultural IoT miniature detectors.

HUADA Group– Professional Manufacturer of M5 Waterproof Connectors

As a leading Chinese industrial connector supplier, HUADA Group owns full sets of high-precision CNC machining equipment and profile measuring instruments. All core M5 connector components are machined under ±0.01mm precision tolerance to guarantee consistent dimensional accuracy and stable electrical performance.

We implement full-process strict quality control: raw material inspection, precision machining, assembly aging test and finished product waterproof testing. Every batch of M5 circular connector is attached with complete test reports covering waterproof grade, contact resistance and vibration resistance. We provide OEM & ODM customization for bulk automation integrators, sensor factories and robotics manufacturers worldwide.

FAQ

What is the most popular M5 connector model?

The 4-pin M5 electrical connector (also named M5 4 pin connector or M5 connector 4 pin) is our top-selling M5 circular connector, widely used for dual power + dual signal micro sensor wiring.

Can your M5 connector replace binder M5 connector?

Yes, our M5 series strictly follows IEC 61076-2-105 unified industry standard, fully interchangeable with binder M5 connector. Complete M5 connector pinout datasheet is available for free download.

What hardware accessories match panel mount M5 sockets?

We supply full supporting hardware: M5 connector nut, M5 joint connector nut and M5 connector bolt for front & rear panel installation.

Do you offer customized M5 cable length?

Yes, we support custom cable length from 0.5m to 20m, optional PVC or PUR wear-resistant cable jacket for harsh workshop environments.

Browse our full M5 connector catalog. We provide free samples, bulk wholesale discount and OEM customization service for global automation, sensor, robotics and IIoT equipment manufacturers.

Need reliable IP67 M5 waterproof connector for your automation project? Request free samples now via WhatsApp +86-15120067961 or send your wiring layout & M5 connector pinout demand to sales@connector-sensor.com, our engineering team will reply within 24 hours.