GX20 4-Pin Male Female Panel Mount Aviation Connector Plug

Specifications

• Connector Type: GX20 Aviation Plug, 4-pin
  
• Mounting Style: Male panel mount (hex nut base), Female cable mount (knurled threaded shell)
  
• Thread Diameter: 20mm
  
• Coupling: Threaded Coupling
  
• 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 per pin
  
• Working Voltage: 400V
  
• Operating Temperature: -20°C to +85°C

Applications

• Combined Motor Power + Signal Wiring: Two pins carry drive current while the remaining two carry feedback, encoder, or control signals consolidating what would otherwise need two separate connectors
  
• Multi-Conductor Sensor Arrays: Detachable connections for sensors needing both power delivery and multiple data lines through a single panel connection
• CNC & Robotics Sub-Systems: Detachable wiring for components needing more than 2 conductors at high current  e.g., a motor plus a brake or limit switch signal
  
• Battery Management & Monitoring: Combined power delivery and voltage/temperature sensing lines through one detachable high-current connector, useful in battery pack or solar setups
  

Minimum Hardware

• 50W (or higher) soldering iron  same requirement as the 2-pin GX20, since pin size and current rating are unchanged
  
• Panel with a 20mm mounting hole identical footprint to the 2-pin version despite the extra pins
  
• Wire labeling or color-coding system with 4 pins instead of 2, keeping track of which wire goes where becomes noticeably more important during assembly

Safety Warnings

• Current Rating Warning: Each pin is individually rated for 10A this rating is per-pin, not a shared total across all 4, but avoid assuming all 4 pins can be loaded simultaneously without checking your specific application's thermal characteristics
• Pin Confusion Warning: With 4 pins in close proximity, mismatching a connection (e.g., swapping a signal pin with a power pin) is easier than on a 2-pin connector label wires clearly before soldering
• Solder Joint Warning: Ensure adequate spacing between solder joints on adjacent pins; the added pin density increases the risk of accidental bridging compared to the 2-pin version
• Mechanical Warning: Torque the hex nut properly on the panel side, same as the 2-pin GX20  a loose mount affects all 4 conductors, not just one
  

Accessories Included in the Box

• 1× GX20 4-Pin Male Panel Mount Connector
• 1× GX20 4-Pin Female Cable Mount Connector

Frequently Asked Questions

• Does this 4-pin GX20 connector fit standard 20mm panel mounting holes?
  Yes, the GX20 designation refers to its 20mm thread diameter, identical footprint to the 2-pin version despite the additional pins.
• Can I mate this male connector with any GX20 4-pin female connector, or only the one it's sold with?
  Any GX20 female connector with matching 4-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 4-pin GX20 and the 2-pin GX20?
  The 4-pin version has two additional conductors in the same 20mm shell, useful for combined power+signal wiring, while the 2-pin is best for simple power-only connections.
• Can I use just 2 of the 4 pins and leave the other 2 unconnected?
  Yes, you can use only the pins you need, though leaving pins unconnected on both halves is generally fine as long as they aren't accidentally bridged during soldering
• What is the current rating per pin on this GX20 4-pin connector?
  Each pin is individually rated for 10A, same as the 2-pin version  this is a per-pin rating, not a shared total across all 4 pins.
• What is the working voltage for the GX20 4-pin?
  It's rated up to 400V working voltage, consistent with the rest of the GX20 series.
• Can I run 4 separate power circuits through this single connector safely?
  Yes, as long as each individual pin stays within its 10A rating, though check your total combined heat dissipation in the connector body under sustained multi-pin high-current use..
• How do I identify which pin is which when wiring all 4?
  Check the insulator disc on each half for printed pin numbers if unmarked, use a multimeter to trace continuity and label each pin clearly before soldering.
• Is there more risk of wiring mistakes with 4 pins compared to 2?
  Yes, pin confusion is more likely with 4 conductors in close proximity  labeling wires with colored tape or heat shrink before soldering significantly reduces this risk.
• Do all 4 pins need to be wired, or can I leave some unused?
  You can leave unused pins unconnected on both halves  just ensure they don't accidentally bridge to an adjacent active pin during soldering or in the finished assembly.
• Why is only some of my 4-pin connection working?
  This usually means one or more solder joints are cold or poorly seated  check each of the 4 pins individually with a multimeter rather than assuming all are fine if some are working.
• Why does one pin feel intermittent while the others work fine?
  Recheck that specific pin's solder joint for a cold joint or partial seating, since with 4 pins it's easy for one to be slightly under-soldered while the others are fine.
• Could two of my pins be accidentally bridged together?
  Yes, this is more likely with 4 pins in close proximity than on a 2-pin connector  inspect closely for solder bridging between adjacent pins if you're seeing unexpected shorts.
• Why does my connector feel like it's not locking securely?
  Confirm the female half's knurled shell is fully screwed onto the male half's threads  the locking mechanism is identical to the 2-pin version regardless of pin count.