4730-00-577-3586 (900085-8C)
NSN 4730-00-577-3586 (NIIN 00-577-3586) is a tube-hose fit compression sleeve in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, And Railing Fittings — a ring-shaped item whose outer surface is so shaped as to form a seat for the coupling nut and the fitting between which it is assembled. Manufacturer part number 900085-8C (Eaton Aeroquip LLC, CAGE 00624); also referenced as 90085-8C (Eaton Limited).
Key specs: 35 minimum rockwell c and 39 maximum rockwell c metallic hardness; full characteristics table below. NIIN assigned December 1974; DEMIL A (none required); ships at 0.02 lb / 0.0101 cu ft.