a hook for suspending a pipe string or other load in a well rig , including a tubular outer body supported by a first connector structure which is attachable to a suspending line , a tubular inner body which supports a second connector structure preferably taking the form of a hook , with the inner body being received within the outer body and being yieldingly urged upwardly relative thereto by a resilient unit or assembly located within the inner body , and with a structure within the inner body bearing upwardly against and supporting the resilient assembly and attached to the first connector structure . a cam mechanism between the inner and outer bodies automatically cams the inner body to a predetermined rotary position upon upward movement , with a locking device or devices serving to retain the inner body in fixed rotary position and / or to lock the camming mechanism in a fixed position in a manner determining the rotary setting to which the inner body returns upon upward movement . the mentioned first and / or second connectors may each consist of two parts receivable within one of the tubular bodies and held in operative connecting engagement therewith by a spacer between the two parts . a link suporting member may be formed separately from the load suporting hook , to be detachable therefrom for repair or replacement .