National Stock Number
4820-01-556-6743
National Stock Number (NSN) 4820-01-556-6743, or NIIN 015566743, (regulator,thermostatic temperature) was assigned October 3, 2007 in the Federal Logistics Information System (FLIS). NIIN 015566743 was cancelled on March 2, 2009, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 6685015116014. This NSN replaces 1 stock number, 4820015384761.
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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 37692. [A SELF SENSORED ACTUATING REGULATOR DESIGNED TO AUTOMATICALLY REGULATE THE FLOW OF LIQUID OR STEAM THROUGH A VALVE TO MAINTAIN A PREDETERMINED TEMPERATURE. DESIGNED TO CLOSE OR OPEN A VALVE WHEN A CHANGE IN TEMPERATURE IS DETECTED TO AVOID OVERHEATING OF CONTROLLED UNIT. VALVE BODY NOT INCLUDED. SEE ALSO REGULATOR (1), TEMPERATURE AND PRESSURE.]. 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 4820015566743 does not contain precious metals.
This information was last updated on Aug 01, 2025.