M19 4Pin Green Male Aviation Socket, PC2.8 Wire Solder Type, 0.4U Gold Plating with Nickel-Plated Brass Hex Nut & Waterproof Gasket

All structural size, electrical performance, material configuration and accessory matching parameters of this M19 4Pin green male aviation socket are standardized and tested in strict accordance with industrial circular connector specifications. The complete technical parameters are listed below for customer selection, drawing reference and engineering verification.

In terms of process parameters, the PC2.8 wire solder terminal adopts standardized hole position size, which matches most conventional industrial electronic wire specifications on the market, avoiding the problem of difficult wire matching for special terminals. The 0.4U uniform gold-plated layer is thick and dense, without missing plating or uneven plating, which can effectively isolate air and humid corrosion. The brass hexagon nut has high structural hardness, not easy to slip during locking, and the surface nickel-plated layer effectively prevents oxidation and rust in humid workshop and outdoor environments. The silicone waterproof gasket has excellent compression resilience, which can maintain stable sealing performance after long-term compression, and will not harden or fail under alternating high and low temperature conditions.

2.1 0.4U Thick Gold Plating, Ultra-Stable Electrical Performance

Different from conventional thin flash gold-plated connectors on the market, this M19 4P male socket adopts 0.4U thick gold plating on the contact surface. The thickened gold-plated layer significantly improves anti-oxidation, anti-corrosion and wear resistance, effectively solving the common problems of poor contact, signal drift and power instability caused by pin oxidation after long-term use of low-end connectors. Under long-term vibration, humid environment and frequent plugging and unplugging working conditions, it can always maintain ultra-low and stable contact resistance, ensuring zero-interruption transmission of equipment power and control signals. It is especially suitable for equipment that requires long-term continuous operation and high connection stability.

2.2 PC2.8 Standard Wire Solder Design, Easy & Reliable Wiring

Equipped with mature PC2.8 wire solder structure, the terminal solder cup has reasonable depth and caliber, which is convenient for workers to quickly strip wires and solder. The solder joint is full and firm after welding, not easy to fall off or break due to wire pulling and equipment vibration. Compared with crimping terminals, wire solder type has stronger wire connection firmness and better anti-vibration performance, which is more suitable for industrial equipment with long-term operating vibration. The standardized specification has strong universality, convenient material procurement and later maintenance and replacement, reducing the overall equipment use cost.

2.3 Green Custom Housing, Anti-Misplug & Easy Identification

The exclusive green insulating shell design provides obvious color differentiation for equipment wiring. In complex equipment with multiple groups of connectors, workers can quickly distinguish circuit groups through colors, effectively avoiding wiring errors, wrong plugging and wrong connection faults, greatly improving production and wiring efficiency. At the same time, the high-strength flame-retardant plastic shell has good insulation, pressure resistance and flame retardancy, which can effectively prevent short circuit and electric leakage safety hazards caused by accidental collision and extrusion of the connector, and improve the overall safety of equipment circuits.

2.4 Premium Brass Nickel-Plated Hex Nut, Anti-Loosening & Anti-Rust

The matching lock nut is made of solid brass integral forming, with higher hardness and structural stability than ordinary iron nuts. The surface is treated with fine nickel plating process, which is smooth and wear-resistant, effectively resisting rust and corrosion in damp, dusty and oily industrial environments. The standard hexagonal structure is convenient for tool locking and disassembly, with uniform locking force and no thread slipping. After installation, it can provide lasting and stable clamping force, which will not loosen due to long-term equipment operation vibration and mechanical impact, ensuring the firmness of connector installation for a long time.

2.5 High-Elasticity Waterproof Gasket, Excellent Sealing Protection

The matched silicone waterproof gasket has high elasticity and compression resistance, which can closely fit the gap between the connector and the equipment mounting surface after compression, forming a tight sealing barrier. It can effectively block external dust, moisture, splash water, dew and corrosive gas from entering the connector interior, prevent pin oxidation, circuit short circuit and signal failure, and ensure the stable operation of internal circuits. The gasket has excellent aging resistance and temperature resistance, and can maintain stable sealing performance in high-temperature workshop and low-temperature outdoor environment, without aging, hardening or deformation.

2.6 Industrial-Grade Durability & Wide Environment Adaptability

The whole connector is designed with industrial-grade wide temperature resistance, which can work stably in the temperature range of -40℃ to +85℃, adapting to severe cold outdoor environment and high-temperature workshop working conditions. The phosphor bronze contact pin has good elasticity and fatigue resistance, and can still maintain accurate pairing and stable contact after 500 times of plugging and unplugging. All materials comply with RoHS and REACH environmental protection standards, non-toxic and pollution-free, meeting global export market access requirements. Strict factory testing ensures that each product has stable quality and low failure rate, providing reliable connection guarantee for end equipment.

With stable electrical performance, convenient wire-soldering installation, anti-misplug color identification and excellent waterproof and anti-vibration capabilities, our M19 4Pin green male aviation socket is widely used in various industrial automation, intelligent equipment, outdoor monitoring, environmental protection instruments and civil electronic equipment, covering medium and low power power transmission and control signal transmission fields.

3.1 Industrial Automation Equipment

It is widely used in automated assembly lines, small industrial control boxes, servo auxiliary equipment, automated testing jigs and conveying equipment. The PC2.8 wire solder structure is firm and anti-vibration, adapting to long-term vibration operation of automation equipment. The green color identification avoids wiring confusion of multiple equipment circuits, which is convenient for daily maintenance and fault inspection of equipment.

3.2 Outdoor Monitoring & Environmental Detection Equipment

Suitable for outdoor low-power monitoring equipment, environmental monitoring sensors, field data acquisition instruments and roadside intelligent terminal equipment. The IP67 waterproof and dustproof performance effectively resists outdoor rain, snow, dust and humid air erosion, preventing circuit damage caused by moisture invasion. The high and low temperature resistance ensures stable operation of equipment in seasonal temperature changing environments.

3.3 Intelligent Home & Commercial Intelligent Equipment

Applied to intelligent access control equipment, commercial display equipment, small intelligent control terminals and supporting power signal connection modules. The product is safe, environmentally friendly and low failure rate, meeting the long-term stable operation requirements of commercial and civil equipment. The anti-misplug design effectively reduces equipment failure caused by human wiring errors.

3.4 New Energy Auxiliary & Power Distribution Equipment

Used for small energy storage auxiliary modules, distributed power distribution terminals, new energy equipment signal acquisition interfaces and low-power power connection parts. The stable gold-plated contact ensures accurate signal acquisition and stable power transmission, and the waterproof structure improves the safety of outdoor power distribution equipment.

3.5 Medical & Laboratory Auxiliary Instruments

Suitable for non-precision medical auxiliary equipment and laboratory conventional testing instruments. The product adopts environmentally friendly materials, stable signal transmission and safe insulation performance, meeting the basic use standards of medical and experimental equipment, with low noise and stable connection.

We have sorted out the most concerned questions of customers for this M19 4P green wire-soldered male aviation socket to help you quickly understand product performance, installation and selection standards.

Q1: What are the advantages of 0.4U gold plating compared with ordinary gold-plated connectors?

A1: 0.4U thick gold plating has thicker and more uniform coating, better wear resistance, oxidation resistance and corrosion resistance. It can maintain ultra-low stable contact resistance for a long time in humid and vibrating environments, effectively avoiding signal instability and power disconnection problems caused by pin oxidation, and greatly extending the service life of the connector.

Q2: What does PC2.8 wire solder type mean and what wires does it match?

A2: PC2.8 refers to the standard 2.8mm wire solder terminal specification, which is a universal industrial wire welding structure. It matches most conventional industrial electronic wires and low-power equipment wires on the market, with high welding firmness and strong versatility, convenient for customer wiring and material matching.

Q3: Are brass hex nut and waterproof gasket included in the full set?

A3: Yes. All our M19 4Pin green male aviation sockets are supplied with complete original supporting accessories, including nickel-plated brass hex lock nut and high-quality waterproof silicone gasket. Customers can install and use them directly after receiving the goods without purchasing additional accessories.

Q4: What is the waterproof grade of this product?

A4: After the connector is completely mated and locked, and the gasket is fully compressed and fitted, the protection grade can reach IP67, which can prevent dust invasion and short-term water splash and water immersion. It is suitable for outdoor and damp indoor working environments.

Q5: Why choose green housing design?

A5: The green shell has obvious visual identification. In equipment with multiple groups of connectors, it can effectively distinguish circuit types, prevent wrong plugging and wrong wiring, improve wiring efficiency, and facilitate later equipment maintenance, troubleshooting and circuit inspection.

Q6: What is the maximum working current of the 4P connector?

A6: The single pin rated current is 8A, and the stable working current is recommended within 6A for long-term continuous use. In high-temperature closed environment, appropriate current derating is required to ensure the service life of the connector.

Q7: Do you support customized services?

A7: We support personalized customization such as special color, special plating thickness, terminal improvement and packaging requirements. We can provide exclusive solutions according to customer equipment parameters and application scenarios.

Q8: What quality certifications can you provide?

A8: We can provide ISO9001 quality system certification, RoHS and REACH environmental protection test reports to ensure that products meet global export standards.

We are a professional manufacturer focusing on the R&D, production and sales of industrial circular aviation connectors, waterproof sockets and various customized wiring connection components. With mature production technology, complete testing equipment and rich industry experience, we are committed to providing global customers with high-quality, high-stability and cost-effective connector products and one-stop connection solutions.

Our M19 4Pin green PC2.8 wire-soldered male aviation sockets with 0.4U gold plating, brass nickel-plated hex nuts and waterproof gaskets are well sold at home and abroad, favored by customers in industrial automation, intelligent equipment, new energy and environmental protection industries. We adhere to strict quality control standards from raw material selection, precision processing to finished product testing, and strictly control every production process to ensure stable and reliable product quality.

We support spot wholesale, small batch trial order and OEM/ODM customized processing services. Whether you need product dimension drawings, sample testing, bulk quotation, technical parameter consultation or customized scheme docking, please feel free to contact our professional sales and technical team. We will reply to your inquiry within 24 hours, provide accurate product selection guidance and professional technical support, and solve all your wiring connection problems efficiently.