4730-00-529-5096 (B16-9)
NSN 4730-00-529-5096 (NIIN 00-529-5096) 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 B16-9 (American National Standards, CAGE 80204).
Key specs: 300 psi maximum first response operating pressure; 400 psi maximum second response operating pressure; full characteristics table below. NIIN assigned January 1961; DEMIL A (none required); unit of issue EA (each); export Schedule B 7307.99.4000.