Based on technical databases, the part number **1663446** typically refers to a **Contact Pin** or **Terminal**, most commonly associated with industrial connector systems like those from **TE Connectivity** or **Caterpillar** electrical systems. ### 1. Technical Overview This part is a precision-engineered metal component designed to facilitate a secure electrical connection within a connector housing. It is a "Male" pin used in wire-to-wire or wire-to-board applications. | Feature | Specification (Typical) | | :--- | :--- | | **Part Type** | Pin / Terminal | | **Material** | Copper Alloy or Brass | | **Plating** | Tin or Gold (application dependent) | | **Termination Method** | Crimp | | **Wire Gauge Support** | Usually 16-20 AWG | --- ### 2. Key Characteristics * **Crimp Termination:** The wire is mechanically squeezed into the tail of the pin using a crimping tool, creating a cold weld for maximum conductivity and physical strength. * **Locking Mechanism:** These pins often feature small "locking lances" or tabs that click into place when inserted into a plastic connector plug, preventing them from backing out. * **High Vibration Resistance:** Parts with this numbering scheme are frequently used in heavy machinery and automotive sectors, meaning they are designed to maintain contact even under extreme shaking. --- ### 3. Common Applications Components labeled under this part family are generally found in: 1. **Heavy Equipment:** Wiring harnesses for engines, sensors, and control modules (often Caterpillar or Perkins). 2. **Automotive Systems:** Signal lighting and dashboard electronics. 3. **Industrial Automation:** Control panels where multi-pin circular or rectangular connectors are used. --- ### 4. Cross-Reference Table If you are looking for this part, it is often grouped with the following complementary components: | Component Type | Purpose | | :--- | :--- | | **1663447 (Socket)** | The female counterpart that the 1663446 pin plugs into. | | **Connector Housing** | The plastic shell that holds multiple 1663446 pins. | | **Extraction Tool** | A specialized metal tool used to remove the pin from the housing without damage. | ---