5820-00-321-4894 (5CD16860)
NSN 5820-00-321-4894 (NIIN 00-321-4894) is a mast b adapter assy in Federal Supply Class 5820, Radio And Television Communication Equipment, Except Airborne. Manufacturer part number 5CD16860 (Us Army Communications & Electronics, CAGE 80063); also referenced as SCD16860 (Us Army Communications & Electronics).
NIIN assigned January 1963; DEMIL B (USML, demil required).