A circular connector is more than its shell size
- Circular connectorThis term
The circular shell houses the specified contacts and mating interface. Verify series, coding, termination and electrical duty together.
- Backshell
The rear housing supports and protects the cable termination. Its screen connection, strain relief and sealing functions are design-specific.
- Coupling nut
The movable collar locks the mating interface as specified. Tightening the collar is distinct from tightening a cable entry or backshell.
- Insert
The insert locates and insulates the contacts. Match its pattern, material duty and assembly orientation to the exact connector.
- Keying
The key controls permitted mating orientation or coding. A similar external diameter does not establish matching keys.
- Pole count
The number of contacts is only one selection field. Contact function, loading and pinout still require confirmation.
The shell, rear housing, coupling, insulating insert, keying and contact count each define part of the interface. Compatible dimensions alone do not establish a compatible mating pair.
Generic connector sections and faces, not a drawing of a named series. Contact pattern, key position, seal and locking geometry are illustrative.