Abstract: A coupling device for detachably connecting of one container fitting to another or a container fitting to a ship's deck by way of a slot within the container fitting, employs a casing for abutment with the container fitting, a locking pin having at least at one end an integral hammerhead bolt with said casing including a longitudinal opening for rotatively carrying the bolt. The opening constitutes a continuous aperture, and the aperture is so disposed and has a cross-section relative to the bolt such that the bolt can be introduced therethrough to achieve assembly, rotated approximately 180.degree. and then subsequent rotation limited to permit the bolt to rotate between extreme operating positions which effectively lock the fitting to the device or release the fitting but prevent the bolt from passing through the casing aperture.

Abstract: A coupling device for detachable connecting of one container fitting to another or a container fitting to a ships deck by way of a slot within the container fitting, employs a casing for abutment with the container fitting, a locking pin having at least at one end an integral hammerhead bolt with said casing including a longitudinal opening for rotatively carrying the bolt. The opening constitutes a continuous aperture, and the aperture is so disposed and has a cross-section relative to the bolt such that the bolt can be introduced therethrough to achieve assembly, rotated approximately 180.degree. and then subsequent rotation limited to permit the bolt to rotate between extreme operating positions which effectively lock the fitting to the device or release the fitting but prevent the bolt from passing through the casing aperture.