6230-00-172-5831 (MILL573)
NSN 6230-00-172-5831 (NIIN 00-172-5831) is a distress marker light in Federal Supply Class 6230, Electric Portable And Hand Lighting Equipment — a light designed to give the location of or indicate a person in distress. Manufacturer part number MILL573 (Military Specifications, CAGE 81349); also referenced as N51G-B (Fulton Industries Inc).
Key specs: switch, replaceable battery; 1.5 DC nominal voltage in volts; full characteristics table below. NIIN assigned September 1972; DEMIL A (none required); unit of issue EA (each), $4.79 gov standard price; export Schedule B 9405.40.0000.