National Stock Number
4520-01-108-4134
National Stock Number (NSN) 4520-01-108-4134, or NIIN 011084134, (tee,air conditioning-heating) was assigned February 26, 1981 in the Federal Logistics Information System (FLIS). NIIN 011084134 was cancelled on March 3, 2005, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. 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, there are no suppliers that are deemed design controlled or valid supply parts.
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 4520011084134 does not contain precious metals.
This information was last updated on Jul 01, 2025.