Abstract: A tool-parts storage box has a base having a floor, generally parallel front and back walls projecting upward from the floor, and generally parallel side walls bridging the front and back walls. A cover can pivot on the base about a cover axis between a closed position overlying the walls and an open position projecting upward from the cover axis. An insert provided with holders for some of the parts can pivot on the side walls about an insert axis generally parallel to but offset from the cover axis and pivotal between a down position nestled in the base and an up position standing up above the base. A link connected between the cover and the insert pivots the insert from the down position into the up position on pivoting of the cover from the closed to the open position. A tray provided with holders for others of the parts is pivoted on the insert about a tray axis generally parallel to and offset from the cover and insert axes. The insert axis lies between the tray and cover axes.