M20 USB Combo Female Aviation Plug | Panel‑Mount Dual USB‑A & Type‑C Waterproof Connector with Gasket & Lock Nut

This M20 USB combo female aviation plug adopts standard M20×1.5 metric thread panel‑mount structure. One single connector body integrates USB‑A female socket and reversible USB Type‑C female socket. Each unit is pre‑matched with silicone waterproof sealing gasket and metal locking nut for bulkhead installation. Every batch undergoes strict multi‑item inspection covering appearance check, electrical continuity, insulation resistance, contact resistance, thread locking performance and sealing assembly test to guarantee stable and consistent industrial‑level quality for mass‑production equipment integration.

1.1 Material & Structural Specifications

Outer housing is high‑quality modified PA66 flame‑retardant engineering plastic rated UL94‑V0, featuring high mechanical toughness, impact resistance, anti‑UV and anti‑aging properties, suitable for long‑term indoor and semi‑outdoor deployment. Dual‑port internal contact terminals for both USB‑A and Type‑C are manufactured from high‑purity phosphor bronze with gold‑plated surface treatment, improving conductivity, anti‑oxidation and anti‑corrosion performance to avoid unstable contact caused by dust, humidity and long‑term plug‑in cycles. The supporting waterproof gasket is made of high‑resilience silicone material, offering outstanding compression recovery, wide temperature tolerance and long service life to maintain stable sealing performance after repeated compression. Precision‑machined metal locking nut provides uniform clamping pressure, firmly holding the combo connector onto equipment panel without rotation or shifting under mechanical vibration. Standard M20 thread dimension matches common M20 panel cut‑out hole, allowing quick through‑panel installation. The tethered anti‑loss protective cap covers both dual‑USB ports when idle, preventing debris and splashes from entering the two receptacles simultaneously.

1.2 Electrical & Signal Performance Parameters

Interface Configuration: Combined USB‑A Female + USB Type‑C Female two‑in‑one receptacle. USB‑A supports up to USB3.0 SuperSpeed 5Gbps, backward compatible with USB2.0 / USB1.1. USB Type‑C supports high‑speed data transmission and reversible plug‑in function. Rated Working Voltage: 300V AC/DC. Rated Working Current: 3A per port. Dielectric Withstand Voltage: 1500V AC (50Hz, 1 minute), no breakdown or flash‑over. Insulation Resistance: ≥2000 MΩ under normal ambient conditions. Contact Resistance: ≤5 mΩ for each contact pin. Mechanical Mating Life: ≥2000 insertion‑withdrawal cycles for each port. Gold‑plated contact surfaces suppress oxidation and signal drift in humid and dusty environments. Note: This connector is designed for signal transmission and low‑power auxiliary power supply scenarios; it is not intended for high‑current heavy‑load power loops.

1.3 Mechanical Performance Parameters

Recommended installation torque for M20 locking nut: 1.0‑2.0 N·m. Thread‑locking structure firmly secures the dual‑port connector to panel surface, resisting cable pulling force, mechanical shock and continuous vibration. It can sustain vibration test range of 10 Hz‑2000 Hz, well‑suited for engineering machinery, mobile vehicle‑mount units and automated production‑line equipment. Reinforced internal bracket structure stabilizes both USB‑A and Type‑C sockets, preventing terminal displacement or deformation caused by frequent plug‑and‑unplug operations. One‑piece molded housing improves compression and collision resistance, lowering risk of cracking during on‑site assembly and operation.

1.4 Environmental Performance Parameters

Operating Temperature: ‑40 ℃ ~ +85 ℃. Storage Temperature: ‑50 ℃ ~ +110 ℃. Plastic housing and silicone sealing parts retain stable physical properties under cold‑hot alternation, without cracking or permanent deformation. Continuous working humidity: up to 95%RH non‑condensing environment, with good moisture‑proof and mildew‑resistant performance. After proper installation with supplied waterproof gasket and locking nut, the connector achieves IP65 dust‑proof and splash‑proof rating. It effectively blocks dust, dew and splashing water from penetrating into equipment interior. This product is suitable for workshops and semi‑outdoor conditions, and is NOT designed for long‑term underwater submersion. Additional external protective enclosure shall be applied for continuous heavy‑spray or underwater working conditions.

1.5 Installation Instructions

Drill standard M20 mounting hole on equipment cabinet panel. Pass the main body of M20 USB combo female aviation plug through panel opening from outside. Place silicone waterproof gasket between connector shoulder and outer panel face. Screw the metal locking nut onto M20 thread from cabinet inner side and tighten to recommended torque. Close the tethered protective cap to cover both USB‑A and Type‑C ports when the interface is not in service. Flip open the cap when you need to insert standard USB‑A male or Type‑C male plug. Installation does not require complex welding work, convenient for mass‑volume production assembly as well as later‑stage equipment refitting and upgrade.

The M20 USB Combo Female Aviation Plug solves real‑world pain points for modern industrial devices that require both traditional USB‑A and new‑generation Type‑C interfaces. Instead of occupying two separate panel holes for two individual USB adapters, this two‑in‑one aviation‑style connector integrates dual interfaces within one M20 thread housing, saving panel layout space, reducing hole‑opening cost and simplifying BOM list. Equipped with complete waterproof gasket and locking nut as standard, it delivers threaded anti‑loosening fixation, dust‑proof & splash‑proof sealing, dual‑port high‑speed signal transmission and industrial‑grade durability all‑in‑one. It helps equipment manufacturers improve interface integration level, lower failure rate caused by environmental contamination and mechanical vibration, and cut overall after‑sales maintenance cost.

2.1 Two‑in‑One Dual‑Port Integrated Design, Space‑Saving Panel Layout

Integrates USB‑A female and reversible USB Type‑C female inside single M20 aviation‑connector housing. Only one M20 panel cut‑out is needed to realize two commonly‑used USB interfaces. It optimizes cabinet panel layout, saves precious panel surface space, reduces mechanical processing workload and simplifies parts procurement management. Equipment can support legacy USB‑A accessories and modern Type‑C peripherals at the same time without installing two independent USB panel adapters.

2.2 Complete Matching Waterproof Accessories for Reliable Panel Sealing

Each combo aviation plug set includes dedicated silicone waterproof gasket and M20 metal locking nut out‑of‑the‑box. No extra spare‑part purchasing required. When nut is tightened, the elastic silicone gasket is compressed tightly between connector shoulder and cabinet panel, filling assembly gaps to form an effective sealing barrier. It isolates external dust, industrial debris, dew and splashing water, protecting both internal USB‑A and Type‑C contact terminals from erosion and short‑circuit risk in harsh workshop and semi‑outdoor environments.

2.3 M20 Aviation Thread Locking Structure, Anti‑Vibration & Anti‑Loosening

Adopts mature M20 metric thread locking mechanism, different from ordinary snap‑in USB sockets which are easy to loosen under vibration. The metal locking nut provides powerful clamping force, firmly fixing the dual‑port combo connector onto panel. It prevents displacement, rotation and poor contact induced by equipment vibration, cable pulling and long‑time running. Perfectly fits vibrating machinery, vehicle‑mounted electronic units and field‑deployed instruments, ensuring sustained stable connection performance.

2.4 Dual‑Interface High‑Speed Transmission, Wide Compatibility

USB‑A port supports USB3.0 SuperSpeed up to 5Gbps and backward compatible with USB2.0 / USB1.1. Reversible USB Type‑C port supports high‑speed data and power signal transmission with reversible plug‑in orientation. Gold‑plated phosphor‑bronze contacts guarantee stable signal integrity for both ports. It is compatible with various industrial debugging tools, data storage devices, handheld terminals, sensors and peripheral equipment. It covers diversified connection requirements of modern industrial hardware, bringing great convenience for equipment parameter configuration, data export and firmware upgrade work.

2.5 Industrial‑Grade Raw Material & Global Compliance Support

High‑strength flame‑retardant PA66 housing, premium silicone sealing components and gold‑plated contact terminals ensure long‑term reliability under complex industrial conditions. Standard products comply with CE and RoHS certification for worldwide export projects. Strict batch sampling tests cover appearance, electrical performance, thread locking and sealing performance. Customization services are available, including special housing color, pin‑definition adjustment and matched mating cable development for personalized project demands.

Benefiting from two‑in‑one dual‑USB‑A & Type‑C design, M20 threaded anti‑vibration locking, dust‑proof splash‑proof sealing and industrial‑grade durability, this combo aviation plug is widely deployed in industrial control cabinets, outdoor intelligent terminals, engineering machinery electronics, testing & measuring instruments, new‑energy equipment and vehicle‑mounted systems.

3.1 Industrial Control Cabinet & Automation Equipment

Mounted on cabinet panel of PLC, industrial controllers and automated production‑line devices. Provides both USB‑A and Type‑C external access ports for program downloading, parameter modification and real‑time data export. Single‑hole installation optimizes cabinet layout. Vibration‑resistant locking and dust‑proof sealing adapt to complicated workshop operating environment.

3.2 Outdoor Intelligent Terminal & Field Monitoring Equipment

Applied for field data‑acquisition cabinets, roadside smart devices and outdoor access‑control terminals. IP67‑level dust‑proof and splash‑proof capability defends against outdoor dust, dew and rain splashes. Dual‑port design supports both older USB‑A peripherals and modern Type‑C handheld debugging tools for on‑site equipment maintenance.

3.3 Engineering Machinery & Vehicle‑Mounted Electronic Systems

Serves as panel‑mount dual‑USB interface for construction machinery, agricultural machines and onboard industrial electronic modules. M20 thread‑locking nut delivers anti‑loosening performance coping with continuous mechanical vibration and bumpy operating conditions. Tethered protective cap keeps USB‑A and Type‑C sockets clean against construction‑site dust and splashes.

3.4 Testing, Measurement & Analytical Instruments

Installed on front panel of high‑speed testing instruments and data‑sampling equipment. Dual‑port combo interface supports connection to USB‑A storage disks and Type‑C data‑collecting terminals. Compact M20 thread mounting simplifies instrument cabinet mechanical design and on‑site maintenance operations.

3.5 New‑Energy & Smart Building Intelligent Devices

Suitable for energy‑storage cabinets, photovoltaic monitoring terminals and smart building control units. It offers convenient dual‑port data access and auxiliary power connection, adapting to wide temperature fluctuation and humid working conditions of new‑energy industry‑site equipment.

Q1: What accessories are contained within this M20 USB combo female aviation plug package?

Standard package includes main M20 two‑in‑one USB‑A + Type‑C combo aviation plug body, silicone waterproof gasket and M20 metal locking nut, plus integrated tethered anti‑loss protective cap. All installation and sealing accessories are complete, no extra parts purchase needed.

Q2: What panel hole dimension is required for installation?

This connector uses M20×1.5 standard thread specification. Please drill M20 standard mounting hole on equipment panel for through‑panel installation.

Q3: What are the transmission capabilities for each port?

USB‑A port supports USB3.0 SuperSpeed up to 5Gbps, backward compatible with USB2.0 / USB1.1. USB Type‑C port supports high‑speed data transmission with reversible plug‑in function. Two ports can work independently for respective peripheral connection.

Q4: What is its waterproof rating? Can it be used under water?

After correct installation with matched gasket and locking nut, it reaches IP65 dust‑proof and splash‑proof grade, resisting dust, dew and splashing water. It is NOT suitable for long‑term underwater immersion. Extra dedicated protective housing should be equipped for continuous heavy‑spray or underwater scenarios.

Q5: What is the advantage of this two‑in‑one combo aviation plug compared with two separate single‑port USB adapters?

It only occupies one M20 panel hole to realize both USB‑A and Type‑C interfaces, saving panel space, reducing machining cost, simplifying BOM and assembly work. One‑set gasket and nut realize sealing and fixation for dual ports simultaneously, improving overall integration degree for equipment panels.

Q6: What mating plugs are compatible with this combo connector?

USB‑A female receptacle mates with standard USB‑A male plug; Type‑C female receptacle mates with standard USB Type‑C male plug. Please use standard‑dimension USB‑A and Type‑C male connectors for stable mating performance.

Q7: Do you accept customized requirements?

Custom service is supported, including special housing color, customized pin‑out definition, adjusted sealing performance and supporting mating cable development. Please provide complete technical requirements for project evaluation and quotation.

Q8: About certification, lead‑time and after‑sales support?

Standard products comply with CE and RoHS certifications. In‑stock standard items can be shipped within 3‑5 working days. Customized orders take 7‑15 working days subject to project complexity. We provide 12‑month quality warranty and 24‑hour online technical support for product selection guidance, installation tips and fault troubleshooting.

We are a professional industrial aviation‑connector manufacturer integrating independent R&D, mold development, plastic injection molding, terminal stamping and finished‑product assembly. Our product portfolio covers full‑series M‑type circular aviation plugs, single‑port USB waterproof panel adapters, this M20 two‑in‑one USB combo female aviation plug, square multi‑pin aviation connectors and various custom‑built industrial interconnection components. Multi‑level strict quality inspection runs through the whole production process to guarantee stable and reliable batch quality for global industrial customers.

Our M20 USB Combo Female Aviation Plug with waterproof gasket and locking nut delivers highly‑integrated dual‑port USB‑A & Type‑C panel‑mount interconnection solution for industrial cabinets, outdoor smart terminals, engineering machinery and precision testing instruments. It solves space‑limitation problems when both legacy USB‑A and modern Type‑C interfaces are required on one panel. We support free sample testing, bulk wholesale and personalized customization services to satisfy diversified application demands for different equipment projects.

We warmly welcome worldwide buyers, equipment OEM manufacturers, system integrators and engineering partners to consult technical parameters, request official datasheets, get wholesale quotations and submit custom‑development requirements. Our professional sales and technical support team provide one‑stop full‑process services covering product‑selection suggestion, solution design, installation guidance and comprehensive after‑sales support. We look forward to establishing long‑term stable win‑win cooperative relationships with global clients.