4730-01-247-1505 (517-5530881)
NSN 4730-01-247-1505 (NIIN 01-247-1505) is a pipe reducer in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, And Railing Fittings — a straight pipe fitting having a different size connection on each end. Manufacturer part number 517-5530881 (Naval Sea Systems Command, CAGE 53711); also referenced as 2400632, 6558-468 (Huntington Ingalls Inc); 517-5530881 ITEM F21 (Naval Sea Systems Command).
Key specs: 700 psi maximum single response operating pressure; full characteristics table below. NIIN assigned December 1986; DEMIL A (none required); unit of issue EA (each), $796.54 gov standard price.