National Stock Number
4520-01-066-6551
National Stock Number (NSN) 4520-01-066-6551, or NIIN 010666551, (tee,air conditioning-heating) has an unknown assigned date. NIIN 010666551 was cancelled on September 18, 1999, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to 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) 15640. [A FITTING HAVING A BRANCH OR BRANCHES WHICH ARE FIXED AT 90 DEGREES (1.5708 RADIANS) TO THE RUN, IT MAY BE REDUCING, STRAIGHT OR CONICAL TYPE; AND IS USED AS A JUNCTION AT THE INTERSECTION OF AIR CONDITIONING-HEATING FLUE PIPES OR FITTINGS.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4520010666551 contains an unknown precious metal.
This information was last updated on May 01, 2025.