National Stock Number
4920-01-666-3366
National Stock Number (NSN) 4920-01-666-3366, or NIIN 016663366, (test set,hydraulic fluid,aircraf) was assigned September 1, 2017 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. 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. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 53442. [A SYSTEM DESIGNED TO PROVIDE BOTH HYDRAULIC POWER TO AND PERFORM VARIOUS FUNCTIONAL AND OPERATIONAL CHECKS OF THE AIRCRAFT HYDRAULICS SYSTEMS WITHOUT THE NECESSITY OF STARTING AND RUNNING THE AIRCRAFT'S ENGINES.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4920016663366 does not contain precious metals.
This NSN is associated to Schedule B 9032810080: hydraulic and pneumatic instruments and apparatus except industrial process control. The Schedule B End Use is listed as measuring, testing, control instruments. NAICS classification category 334513: instruments and related products manufacturing for measuring, displaying, and controlling industrial process variables.
This information was last updated on Aug 01, 2025.