Non magnetic, cadmium plated, cage type speed nut permits mounting of aircraft instruments to front face of panel. Cage is compressed with finger-pressure to allow insertion of legs into clearance holes. The legs spring apart upon release of pressure to receive 6-32 brass screws at back of instrument. Stock only 6-32 size. Not for use on Westach instruments. Screws are not included with nuts. See screw section of catalog for proper length and type.