GX20 2-Pin Male Female Panel Mount Aviation Connector Plug

Specifications

• Connector Type: GX20 Aviation Plug, 2-pin
  
• Mounting Style: Male panel mount (hex nut base), Female cable mount (knurled threaded shell)
  
• Thread Diameter: 20mm
  
• Coupling: Threaded Coupling
  
• Contact Diameter and Pin Number: Ø2.5, 2
  
• Shell Material: Zinc Alloy with Nickel plating
  
• Insert Material: Bakelite
  
• Locking Mechanism: Female half's knurled shell screws directly onto the male half's external threads
  
• Termination: Solder
• Rated Current: 10A
• Operating Temperature: -20°C to +85°C
• Working Voltage: 400V

Minimum Hardware

• 50W (or higher) soldering iron  the GX20's larger pins and heavier-gauge wire typically used with 10A loads need more sustained heat than a basic 25W iron provides
  
• Panel with a 20mm mounting hole larger than both the GX16's 16mm and GX12's 12mm requirements
  Wrench (recommended, not optional)  the GX20's larger hex nut benefits from
• proper torque for a secure high-current connection; finger-tightening alone is less reliable at this current level

Safety Warnings:

• Current Rating Warning: This connector is rated for 10A exceeding this on a sustained basis risks heat buildup at the pins and potential connector failure; verify your actual load current before wiring
• Voltage Warning: Working voltage is rated to 400V  while most hobbyist/maker applications run far lower, always confirm your circuit's voltage is within this connector's rating
• Solder Joint Warning: At higher current, a poor or partial solder joint creates a resistance point that generates heat under load  ensure joints are fully wetted and solid, not just visually connected
• Mechanical Warning: Torque the hex nut properly on the panel side  a loose panel mount on a high-current connector can work itself further loose under vibration, degrading the connection over time
  

Applications

• Motor & Actuator Power Wiring: Detachable connections for motors, linear actuators, or pumps drawing current beyond the GX16's safe margin
  
• Portable Power Tool Battery Packs: Secure, high-current disconnect points where a loose or undersized connector would risk overheating
  
• Industrial Control Panels: 10A-rated power distribution wiring where connectors need real current margin, not specs that are just barely adequate

Accessories Included in the Box

• 1× GX20 2-Pin Male Panel Mount Connector
• 1× GX20 2-Pin Female Cable Mount Connector

Frequently Asked Questions

• Does this 2-pin GX20 connector fit standard 20mm panel mounting holes?
  Yes, the GX20 designation refers to its 20mm thread diameter, so it fits standard 20mm panel cutouts used across the GX connector series.
  
• Can I mate this male connector with any GX20 female connector, or only the one it's sold with?
  Any GX20 female connector with matching pin count will physically mate with this male connector, since the GX20 series maintains a consistent thread and pin layout across manufacturers.
  
• What's the difference between this GX20 connector and the GX16 or GX12?
  The GX20 has a larger 20mm thread diameter and is rated for 10A/400V, significantly higher than the GX16 (~4A) and GX12 (~2-3A), making it the right choice for motor and high-power connections rather than signal or sensor wiring.
  
• Can I use this with a 3-pin or higher configuration device instead?
  No, this is a 2-pin only connector  Probots also stocks 3-pin and 4-pin GX20 variants for applications needing more conductors.
• What is the maximum current rating for this GX20 connector?
  It's rated for 10A with a max current spec of 8A per the manufacturer's detailed rating  always verify your actual sustained load current stays within this range.
  
• What is the working voltage for the GX20?
  It's rated up to 400V working voltage, well above what most hobbyist and maker applications require, giving genuine safety margin for lower-voltage high-current use.
  
• Is the GX20 suitable for connecting a battery pack to a motor controller?
  Yes, this is a common use case  the 10A rating comfortably handles most small-to-medium motor and battery pack connections that would overload a GX16 or GX12.
• How do I identify Pin 1 and Pin 2 when wiring?
  Check the insulator disc on each half for printed pin numbers  if unmarked, use a multimeter to trace continuity and label them yourself before soldering.
  
• Do I need thicker gauge wire for this connector compared to the GX16?
  Yes, since the GX20 is rated for higher current, using wire gauge appropriately rated for 10A is important  thin wire becomes the actual current bottleneck even with a properly rated connector.
  
• What happens if I accidentally swap Pin 1 and Pin 2 during wiring?
  For a simple 2-pin power connection, swapping typically reverses polarity  on a high-current DC connection, this can cause serious damage to polarity-sensitive components, so always verify correct pin matching before powering on.
• Why does my GX20 connector feel warm during operation?
  Some warmth under sustained 10A load can be normal, but excessive heat usually indicates a poor solder joint, loose thread engagement, or a load current exceeding the connector's rating  check all three before continuing use.
  
• Why is my connection intermittent after installation?
  Check that both solder joints are fully seated and wetted (not just touching), and confirm the female half's knurled shell is fully screwed onto the male half's threads.
  
• The panel mount hex nut feels loose after installation  what's wrong?
  Use a wrench to properly torque the hex nut  the GX20's larger size benefits from firm tightening rather than finger-tightening alone, especially for high-current stability.
  
• Why did my connector fail under a load that seemed within spec?
  Check for a marginal solder joint or undersized wire gauge  both create resistance points that generate heat and can cause premature failure even when the connector itself is rated for the load.