Which term describes the connector style that uses bayonet coupling for a positive lock?

Which term describes the connector style that uses bayonet coupling for a positive lock?

• A. Threaded Coupling
• B. Push-Pull
• C. Bayonet Coupling
• D. Snap-Fit

Answer: (C)

Bayonet coupling is a fast, positive-locking connector style. It works by aligning two mating parts with matching lugs or pins and then giving a quick twist to lock the connection. The rotation causes the lugs to seat in corresponding slots, creating a secure retainment that resists pulling apart even under vibration. This combination—quick mating with a definite locked position—makes it ideal for aircraft and other environments where you need a reliable connection that can be connected or disconnected quickly without tools. Contrast this with threaded coupling, which relies on screwing two halves together; it takes longer to mate and can loosen under vibration. Push-pull uses a different mechanism that relies on a pulling action and a locking sleeve rather than a twist-lock. Snap-fit is designed for simple, often plastic parts that snap into place with flexible features, not for the robust, twist-to-lock style described here.

Bayonet coupling is a fast, positive-locking connector style. It works by aligning two mating parts with matching lugs or pins and then giving a quick twist to lock the connection. The rotation causes the lugs to seat in corresponding slots, creating a secure retainment that resists pulling apart even under vibration. This combination—quick mating with a definite locked position—makes it ideal for aircraft and other environments where you need a reliable connection that can be connected or disconnected quickly without tools.

Contrast this with threaded coupling, which relies on screwing two halves together; it takes longer to mate and can loosen under vibration. Push-pull uses a different mechanism that relies on a pulling action and a locking sleeve rather than a twist-lock. Snap-fit is designed for simple, often plastic parts that snap into place with flexible features, not for the robust, twist-to-lock style described here.