A safety cable hook is provided for receiving a cable loop which hook includes a rigid loop, a hook means rotatable on the loop and having a throat with a substantial radius in the plane of the loop exceeding the minimum bending radius of the cable, and a free end on said hook extending parallel to the rigid loop receiving a lock ring slidable in said rigid loop to prevent removal of said cable.

A hook for connecting a pair of chain links each having a predetermined cross-sectional diameter includes an enlarged head having a shank extending therefrom and merging into a reversely curved bowl which merges into a hook end portion spaced from the shank to define a throat having a width greater than the predetermined diameters of either chain link but less than their combined diameters so the links cannot pass one another in the throat. The interior of the bowl has a width greater than such combined diameter so the links can pass one another only within the bowl for assembly or disassembly of the chain links.

A hook and rail for use with tensioned webs and the like wherein the hook is defined by an opening in a stamped plate body having a throat through which a rail is received when the hook is angularly oriented to the rail in a particular manner. The hook body has a tension axis and the dimension of the hook throat parallel to the tension axis is less than the dimension of the rail in the direction of the tension axis during hook operation. The hook opening includes a recess and a guide surface whereby upon release of the tension in the web, and movement of the hook under gravity, positions the rail in the opening recess maintaining the anchor captured within the hook opening and the rail configuration prevents disengagement of the hook unless the hook is rotated through a specific motion.