Which connector design uses a captive ring to mate with a receptacle?

Which connector design uses a captive ring to mate with a receptacle?

• A. Screw-on connectors
• B. Bayonet connectors
• C. Thread coupling connectors
• D. Push-on connectors

Answer: (C)

Threaded (coupling) designs rely on a coupling nut that screws onto the receptacle, drawing the two halves together for a secure, vibration-resistant connection. The captive ring is a locking element built into the coupling interface that stays with the connector and engages the receptacle as you tighten, ensuring proper alignment and preventing accidental disengagement. This captive ring feature is what distinguishes this design from other types, such as bayonet (twist-lock with lugs), or push-on styles that rely on friction or different locking mechanisms.

Threaded (coupling) designs rely on a coupling nut that screws onto the receptacle, drawing the two halves together for a secure, vibration-resistant connection. The captive ring is a locking element built into the coupling interface that stays with the connector and engages the receptacle as you tighten, ensuring proper alignment and preventing accidental disengagement. This captive ring feature is what distinguishes this design from other types, such as bayonet (twist-lock with lugs), or push-on styles that rely on friction or different locking mechanisms.