Abstract: Disclosed is a device for securing a first article such as a bung in a second article such as the substantially closed end of a container having a receptacle for receiving the bung. The device comprises means mounting selected portions of the first article and selected portions of the second article for rotating the first article in the second article in a first direction a predetermined distance to capture the first article in the second article and means mounting the first article and engaging the second article to permit rotation of the first article relative to the second article in a direction opposite to the first direction and to limit rotation in the direction opposite to a distance less than the predetermined distance.