National Stock Number
1660-00-796-4741
National Stock Number (NSN) 1660-00-796-4741, or NIIN 007964741, (turbine,aircraft cooling) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 1660006571539.
There are 2 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 1991, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 61429. [A NONPOSITIVE DISPLACEMENT MECHANICAL DEVICE DESIGNED TO PROVIDE COOL AIR IN AIRCRAFT AIR CONDITIONING SYSTEMS. COOL AIR OR REDUCTION IN TEMPERATURE IS OBTAINED WHEN THE HEAT OR ENERGY OF COMPRESSED AIR IS REMOVED BY CONVERTING IT TO WORK OR MECHANICAL ENERGY TO DRIVE AN IMPELLER WHEEL. COMPRESSED AIR IS DIRECTED THROUGH NOZZLE VANES AND IMPINGED UPON THE BLADES OF A TURBINE WHEEL CREATING ROTARY MOTION WHICH DRIVES AN IMPELLER WHEEL. CONSISTS OF AN IMPELLER WHEEL, A TURBINE WHEEL MATCHED WITH A NOZZLE RING ON A BEARING MOUNTED SHAFT WITHIN A SCROLL TYPE HOUSING(S).]. Item has not been reviewed for Flight Safety Critical Aircraft Part (FSACP), Critical Safety Item (CSI), or Critical Application Item (CAI) purposes by an approved engineering authority. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1660007964741 does not contain precious metals.
This NSN is associated to Schedule B 8803300060: other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof). The Schedule B End Use is listed as parts for military-type goods. NAICS classification category 336413: other aircraft parts and auxiliary equipment manufacturing.
This information was last updated on Aug 01, 2025.