GX12 Aviation Circular Connector – 2–7 Pin, Male & Female Panel Mount 12mm Metal Nut Type, 5pcs

GX12 series aviation circular connectors with 12mm thread diameter and metal (zinc alloy) body construction — the compact standard for instrument, scientific, and light industrial panel connections. The metal body provides better mechanical robustness and EMI shielding compared to plastic-body variants. The panel-mount nut type allows the socket to be fixed to a 12mm panel hole by threading the rear nut from behind the panel. Available in 2 through 7 pin configurations for a wide range of circuit requirements.

Key Specifications

• Series: GX12 (12mm thread diameter)
• Pin Configurations: 2, 3, 4, 5, 6, 7 pin (select above)
• Current Rating: 5A per contact (2–5 pin); 3A per contact (6–7 pin)
• Voltage Rating: 250V AC/DC
• Contact Material: Copper alloy, gold-plated
• Body Material: Zinc alloy (metal), nickel-plated
• IP Rating: IP50 (not waterproof)
• Panel Cutout: 12mm diameter hole
• Quantity: 5 pieces (sets)

Metal Body vs Plastic Body GX12

• Metal body (this product): Zinc alloy construction. Higher mechanical strength — resists cracking from impact and overtightening. Provides EMI shielding when the body is grounded. Heavier than plastic. Preferred for industrial equipment, test instruments, and applications with mechanical stress on the connector.
• Plastic body: Nylon or ABS construction. Lighter weight. Lower cost. Adequate for light-duty applications with minimal mechanical stress. No EMI shielding. Preferred for consumer electronics and low-cost equipment.

Frequently Asked Questions

How do I panel-mount a GX12 socket?

Drill a 12mm hole in the panel. Insert the socket body through the hole from the front. Thread the rear nut onto the connector body from behind the panel and tighten finger-tight, then 1/4 turn with a wrench. Do not overtighten — excessive torque cracks the insulator on plastic-body variants and strips the thread on metal-body variants. The connector is now fixed to the panel. Connect wires to the solder cups on the rear of the socket.

What is the pin numbering convention for GX12 connectors?

GX12 pin numbers are marked on the insulator face of the connector. Looking at the mating face (the face that connects to the plug): pins are numbered clockwise starting from the largest pin (or the pin at the top, depending on the specific variant). Always verify pin numbering against the connector’s insulator markings — do not rely on memory or assumed conventions, as different manufacturers use different starting positions.

Can I use GX12 connectors for 24V DC industrial applications?

Yes. The 250V AC/DC rating covers 24V DC industrial control voltages. The 5A per contact rating (2–5 pin) supports most 24V sensor and actuator current requirements. For 24V applications drawing more than 5A per circuit, use GX16 (5A per contact, more robust) or Deutsch DT connectors (13A per contact, IP67).

Are GX12 and GX16 connectors interchangeable?

No. GX12 (12mm thread) and GX16 (16mm thread) are different sizes and are not interchangeable. The housings, contacts, and panel cutout sizes are all different. GX12 and GX16 connectors will not mate with each other. Always verify the thread size before ordering replacement connectors.

Typical Applications

• Scientific instruments: Sensor connections, probe interfaces, measurement equipment
• Industrial equipment: Control panel connections, machine interface wiring
• Audio equipment: Intercom systems, stage lighting control, custom audio interfaces
• DIY electronics: Custom enclosure connections, modular power supplies, test equipment
• Robotics: Compact sensor and actuator connections on small robots

Package Contents

5 pieces — GX12 aviation connector sets (male plug + female socket, pin count as selected). Rear nut and mounting hardware included.