What type of connector employs a captive, internally threaded coupling ring that mates with the receptacle?

What type of connector employs a captive, internally threaded coupling ring that mates with the receptacle?

• A. Thread coupling connectors
• B. Soldered connectors
• C. Push-in connectors
• D. Quick-connect fittings

Answer: (A)

Thread coupling connectors are defined by a captive coupling ring with internal threads that screw onto the receptacle to mate and lock the connection. The coupling ring stays attached to the plug, so it isn’t lost during handling, which is crucial in the field. The threaded engagement provides a strong, vibration-resistant, and reusable connection suitable for aircraft environments, and it allows for reliable sealing when used with appropriate gasketing. Soldered connectors rely on solder joints rather than a threaded ring, so they don’t use a coupling to mate parts. Push-in connectors secure wires by spring or wedge mechanisms without a threaded coupling. Quick-connect fittings use a push-pull or latch mechanism rather than a captive threaded ring.

Thread coupling connectors are defined by a captive coupling ring with internal threads that screw onto the receptacle to mate and lock the connection. The coupling ring stays attached to the plug, so it isn’t lost during handling, which is crucial in the field. The threaded engagement provides a strong, vibration-resistant, and reusable connection suitable for aircraft environments, and it allows for reliable sealing when used with appropriate gasketing.

Soldered connectors rely on solder joints rather than a threaded ring, so they don’t use a coupling to mate parts. Push-in connectors secure wires by spring or wedge mechanisms without a threaded coupling. Quick-connect fittings use a push-pull or latch mechanism rather than a captive threaded ring.