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KRX04

This is a high-precision matched male/female pin & socket contact set, engineered for stable and reliable electrical signal and current transmission. Crafted with copper alloy substrate and gold plating, it is widely applied in precision connectors, automotive electronics, new energy BMS systems, industrial wiring harnesses, and aerospace equipment. The set combines a solid male pin and a hollow crimp-type female socket, ensuring seamless mating, easy assembly, and long-term performance in harsh operating environments.
  • Superior Electrical Conductivity: High-conductivity brass/phosphor bronze substrate with precision gold plating (0.2~1.0μm) minimizes contact resistance, ensuring stable signal and current transmission even in high-frequency or high-power scenarios.
  • Secure Anti-Loosening Design: Step-shaped structure locks the pin and socket firmly into the connector housing, preventing axial movement, disengagement, or rotation under vibration, shock, or repeated plugging.
  • Precision Machining & Perfect Mating: Strict dimensional tolerance control (±0.01mm) ensures consistent size and perfect mating between male and female contacts, guaranteeing reliable contact and smooth assembly.
  • Exceptional Durability: Gold plating provides excellent anti-oxidation, anti-corrosion, and wear resistance, extending the product’s service life to ≥10,000 mating cycles and adapting to harsh industrial/automotive environments.
  • Crimp-Friendly & Efficient Assembly: The hollow female socket features a side hole for easy wire crimping or soldering, enabling quick, secure electrical connections and improving assembly efficiency.
  • Full Mated Set: Supplied as a pre-matched male/female pair, eliminating compatibility issues and ensuring optimal electrical performance right out of the box.
  • High Customizability: Fully customizable in pin diameter, length, gold plating thickness, and socket size to match specific connector design and application requirements.
  • 1.Pre-Assembly Preparation:


    nspect the product before use: Check for surface defects (scratches, plating damage, deformation) and ensure dimensional consistency between the male pin and female socket.

    Verify that the pin diameter and socket inner diameter match the connector housing’s hole size to avoid loose fit or assembly difficulty.

    Prepare necessary tools: Precision crimping tool (for crimping applications), low-temperature solder (≤260℃, for soldering applications), anti-static gloves, and cleaning cloth.


    2.Crimping Method (Recommended):


    Strip the wire insulation to a length matching the socket’s crimping section (usually 2–3mm), ensuring no damage to the wire conductor.

    Insert the stripped wire into the hollow female socket, aligning the conductor with the side hole of the socket.

    Use a precision crimping tool to compress the socket around the wire, ensuring a tight, secure bond (avoid over-crimping to prevent socket deformation).

    Check the connection: Gently pull the wire to ensure it does not loosen from the socket.


    3.Soldering Method (Optional):


    Strip the wire insulation and insert the conductor into the socket’s side hole.


    Use low-temperature solder (≤260℃) to solder the wire to the socket, avoiding overheating which may damage the gold plating or socket structure.

    After soldering, use a cleaning cloth to wipe off residual flux to prevent corrosion.


    4.Assembly into Connector Housing:


    Align the step section of the pin/socket with the corresponding groove in the connector housing.

    Gently press the pin/socket into the housing until the step locks into place (you will hear a slight “click” sound), ensuring it cannot move axially.

    Avoid excessive force during insertion to prevent deformation of the pin/socket or damage to the connector housing.


    5.Mating & Disconnection:


    Mating: Align the male pin with the female socket and insert smoothly, ensuring full mating to guarantee optimal electrical contact.

    Disconnection: Pull the male and female contacts straight back to separate them; avoid applying side stress to prevent bending or damaging the pin tip.


    6.Storage & Maintenance:


    Storage: Keep the product in a dry, dust-free, and anti-corrosive environment. Avoid direct sunlight and high humidity.

    Maintenance: Regularly inspect the product for plating damage, loose connections, or deformation. If any defects are found, replace the pin/socket set immediately to avoid electrical failure.


    7.Safety Precautions:


    Wear anti-static gloves during handling to prevent electrostatic discharge (ESD) damage to sensitive electronic components.

    Do not exceed the rated current/voltage to avoid overheating, insulation breakdown, or electrical failure.

    Keep the product away from children and avoid accidental ingestion or injury.

    Use the product in accordance with the application requirements; do not use it in flammable, explosive, or highly corrosive environments unless specifically customized for such scenarios.


    Advantage matching picture(Google advertising slogan)
Parameter Typical Value / Customizable Range
Material Brass / Phosphor Bronze (CuSn / CuZn)
Surface Treatment Gold Plating (Au), thickness 0.2~1.0μm (customizable)
Product Type Male Pin (solid) + Female Socket (hollow, crimp type)
Pin Diameter 1.0~2.5mm (customizable)
Total Length 15~40mm (customizable)
Socket Inner Diameter Matched to male pin diameter (tolerance ±0.01mm)
Rated Current 5~15A (depends on pin diameter)
Rated Voltage 30~500V AC/DC
Operating Temperature -40℃ ~ +125℃
Dimensional Tolerance ±0.01mm
Mating Cycles ≥10,000 times
Weight 0.1~0.5g/pair (depends on size)

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