5960-00-264-3017 (4THAT)
NSN 5960-00-264-3017 (NIIN 00-264-3017) is an electron tube retainer in Federal Supply Class 5960, Electron Tubes And Associated Hardware — an item specifically designed to restrain the movement of an electron tube when the latter is mounted in another item, normally a tube socket. Manufacturer part number 4THAT (Northrop Grumman Systems Corp, CAGE 92755); also referenced as 70-2-148C (Smart Machines, Inc.); SMC209541-3 (Us Army Communications & Electronics).
NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8540.99.0000.