4730-00-448-8627 (FIG459)
NSN 4730-00-448-8627 (NIIN 00-448-8627) is a pipe union in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, And Railing Fittings — a straight pipe fitting designed to join two lengths of pipe or pipe fittings in such a manner that they may be disconnected without disturbing the rest. Manufacturer part number FIG459; also referenced as FIG459 3-4 (ITT Grinnell Corp).
Key specs: 300 psi maximum single response operating pressure; full characteristics table below. NIIN assigned May 1974; DEMIL A (none required).