4730-00-720-2051 (144887)
NSN 4730-00-720-2051 (NIIN 00-720-2051) is a tube coupling inverted nut in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, And Railing Fittings — an externally threaded fastening device which has an internal or external seat. Manufacturer part number 144887 (General Motors LLC, CAGE 7X677).
NIIN assigned January 1963; DEMIL A (none required).