GX16 VS M16 Circular Connectors: Key Specifications & Selection Criteria

GX16 VS M16 Circular Connectors: Key Specifications & Selection Criteria

In industrial control, automation systems, and electronic applications, the reliability and compatibility of circular connectors significantly impact system stability. GX16 and M16—two standardized 16mm-diameter connectors—are often misselected due to structural differences. This article provides a professional comparison across three dimensions: electrical characteristics, mechanical properties, and application scenarios.  

 1. Electrical Performance Comparison  

² Current Rating  

  - GX16: Standard models support up to 5A (@250V AC), suitable for signal transmission or low-power supply.  

  - M16: Industrial-grade variants handle 10A (@400V AC), ideal for high-current applications like motor drives.  

² Contact Resistance  

  - Both use gold/nickel-plated brass contacts, but M16 typically has lower resistance (<10mΩ) due to higher contact force (~1.5N).  

 2. Mechanical Design & Protection  

² Thread Specifications  

  - GX16: Metric thread M16×1.0, fewer turns (~5), designed for quick mating.  

  - M16: Available in M16×1.5 (metric) or PG16 (PG thread), with more turns (7-9) for superior vibration resistance.  

²  IP Rating  

  - GX16: Default IP65 (water jet-resistant), optional IP67 with sealing.  

  - M16: Industrial models standardize IP67, while metal-shell versions achieve IP68 (submersion up to 1m).  

 3. Typical Applications  

 4. Selection Workflow  

1. Current >5A? → Choose M16  

2. Vibration/waterproofing needed? → M16 (IP67+ metal shell)  

3. Cost-sensitive + low-voltage signals? → GX16  

Ø Pro Tip: The IEC 61076-2-104 standard defines mechanical strength tests for M16 connectors (e.g., 50N axial pull test), while GX16 often follows manufacturer specs—verify certifications for critical applications.  

Guangdong Corecon Precision Industry Co., Ltd. aims to be your reliable partner in pin and socket manufacturing. Our professional team stands ready to support you, driving your business forward. Choose Corecon for a trustworthy partnership and a brighter future. Contact us for inquiries or more information.