5360-00-619-7632 (SC3-4X187X016)
NSN 5360-00-619-7632 (NIIN 00-619-7632) is a compression helical spring in Federal Supply Class 5360, Coil, Flat, Leaf, And Wire Springs — an open coiled spring, wound in various forms and from different shapes and types of materials and finished at the ends. Manufacturer part number SC3-4X187X016 (Hardware Products Co Inc, CAGE 73976); also referenced as 9166342 (Us Army Aviation And Missile Command).
NIIN assigned January 1963; DEMIL A (none required).