Abstract: A device useful in retaining the position of a push rod associated with an engine during removal of a fuel pump is comprised of a hollowed machine bolt and a second bolt associated therewith by spring means. The hollowed bolt is comprised of a polygonal head, an externally threaded shaft extending from the inner face of the head, a cylindrical passageway within the shaft coaxially aligned with the center axis thereof, and a depression recessed into the outer face of the head. The second bolt has a small head and a thin shaft which penetrates the passageway and threadably engages a nut positioned within the recess. A coil spring is disposed about the thin shaft, the extremities of said spring being in abutment with the end of the shaft of the hollowed bolt and the small head of the second bolt.

Abstract: A cylindrical bushing is positioned over the shank of a screw member prior to forming threads on the shank. After the threads are formed, the outside diameter of the threads is greater than the inside diameter of the bushing so that the bushing is held captive on the shank of the screw. A cylindrical sleeve is then inwardly deformed so as to be permanently secured to the bushing. The opposite end of the sleeve facing away from the head of the screw shank extends beyond the bushing and forms a skirt which can be peened over the peripheral inner edge of a panel opening to secure the sleeve to the panel, thereby holding the screw captive to the panel. The end of the bushing next to the underside of the screw head has an increased internal diameter portion for accommodating a spring serving to bias the head and shank away from the bushing so that when the screw is unfastened, it will pop outwardly and release quickly any member to be secured to the panel.

Abstract: A quick-acting panel fastener assembly for joining a panel to a sub-structure is disclosed. The fastener assembly includes a sleeve bolt, a grommet assembly which is attached to the panel and a receptacle assembly which is attached to the sub-structure. The sleeve bolt passes through the grommet assembly and engages the receptacle assembly thereby joining the panel and the sub-structure. The grommet assembly includes a retainer ring which engages a groove in the sleeve bolt when it is in its withdrawn position so that the sleeve bolt is retained in the panel and remains in its withdrawn position when the panel is disengaged from the sub-structure.