1. Aviation plug contact body
It is usually formed by cutting or non cutting methods. Cylindrical pins and sockets have simple structures, reliable contact, and are easy to machine into various specifications, making them widely used.

2. Insulator
The insulation components of the fixed contact body of aviation plug insulators not only ensure mutual electrical insulation between multiple contact bodies, but also play a guiding, positioning, sealing and other functions. The material and structure of insulators directly affect the electrical and mechanical properties of aviation plugs. According to the hardness of the material, there are elastic insulators, semi hard insulators, and hard insulators. Commonly used materials include rubber, plastic, ceramics, and glass.

3. Shell
The structure for fixing and protecting the insulation and contact body of the aviation plug housing. There is a positioning, guiding, and locking mechanism on the shell to ensure the normal operation of the aviation plug. The shell sometimes also serves as a seal, waterproof, fireproof, and electric field shielding. The shell of the Circular connector has screws, bayonets and in-line self-locking self-locking type, which is convenient for connection under the condition of multiple contacts and large plugging force.

What are the connection methods for aviation connector plugs and sockets?
1. Threaded connections are the most common. It has the advantages of simple processing technology, low manufacturing cost, and wide applicability, but the connection speed is slow, which is not suitable for occasions that require frequent plugging and quick connection;
2. The three bayonet slots in the bayonet connection have longer leads, resulting in faster connection speed but more complex manufacturing and higher costs;
3. Push pull connection is the fastest of the three connection methods. No need to rotate, just move in a straight line to achieve connection, separation, and locking functions. Because it belongs to direct push pull connection, it is only suitable for aviation plugs with low total separation force. Commonly seen in small aviation plugs.