National Stock Number
4410-01-050-3554
National Stock Number (NSN) 4410-01-050-3554, or NIIN 010503554, (controller,feed water pump and burner,boiler) has an unknown assigned date. NIIN 010503554 was cancelled on November 2, 1991, 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) 18533. [AN ITEM DESIGNED TO MAINTAIN THE PREDETERMINED SAFE WATER LEVEL IN AUTOMATICALLY FIRED BOILERS AND TO INTERRUPT THE CIRCUIT TO THE BURNER IN THE EVENT OF FAILURE OF THE WATER SUPPLY. THE BOILER WATER LEVEL IS REPRODUCED, BY EQUALIZING LINES, IN A FLOAT CHAMBER AND THE PUMP AND BURNER SWITCHES ARE ACTUATED BY A FLOAT MECHANISM. EXCLUDES:CONTROL, COMBUSTION, OIL BURNER AND FEEDER, BOILER WATER.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4410010503554 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.