Discrete mechanical elements for mounting, operating, adjusting or closing equipment: handles, knobs, handwheels, cranks, hinges, latches, locks, indexing and spring plungers, clamping levers and arms, connector joints, holding magnets, levelling feet, wheels, motor mounts and brackets. Includes modular mounting accessories. Complete frames and housings have their own family; ordinary fasteners, fluid-pipe supports, powered axes and vibration-isolating mounts retain their functional families. Dedicated manufacturing fixtures require their tooling context.