2590-00-618-3012 (3671042)
NSN 2590-00-618-3012 (NIIN 00-618-3012) is a protectoscop in Federal Supply Class 2590, Miscellaneous Vehicular Components. Manufacturer part number 3671042 (General Motors LLC, CAGE 7X677); also referenced as 6183012 (U S Army Tank Automotive Command); 1472B (Sensata Technologies, Inc.).
NIIN assigned January 1963; DEMIL B (USML, demil required).