4730-00-961-3502 (85)
NSN 4730-00-961-3502 (NIIN 00-961-3502) 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 85 (Tube Turns Technologies Inc, CAGE 78824); also referenced as 91 (Tube Turns Technologies Inc).
Key specs: 4000 psi maximum single response operating pressure; full characteristics table below. NIIN assigned January 1962; DEMIL A (none required); export Schedule B 7307.99.2000. Supersedes 4730-00-961-3501 (2023).