Abstract: A receptacle includes a housing having a port for receiving a plug. An interlock assembly is provided for locking and unlocking the plug to the housing and includes a unitary main shaft having a first end and a second end. The second end is contoured to extend radially from a longitudinal axis of the main shaft. A spring is coaxial with the longitudinal axis and is configured to engage the second end of the main shaft. The spring is configured to apply a rotational biasing force to the main shaft to bias the main shaft toward a locked position wherein a locking bar attached to the first end of the main shaft engages and locks the plug to the housing. A tab is attached to the first end of the main shaft and is configured to rotate the main shaft between the locked position and an unlocked position.