3455-00-404-5841 (AR-4/883)
NSN 3455-00-404-5841 (NIIN 00-404-5841) is a tool holder cutter bit in Federal Supply Class 3455, Cutting Tools For Machine Tools — a cutting tool, supported by a holder, and used for various machine operations, including boring, cut-off, planing, slotting, threading, and turning. Manufacturer part number AR-4/883 (American Carbide Tool Co, CAGE 65485); also referenced as 87-621, AR4-370, AR4-78B (Armstrong Bros Tool Co).
NIIN assigned August 1969; DEMIL A (none required); export Schedule B 8207.80.0000.