National Stock Number
6685-01-557-5590
National Stock Number (NSN) 6685-01-557-5590, or NIIN 015575590, (thermostat,flow control) was assigned October 25, 2007 in the Federal Logistics Information System (FLIS). NIIN 015575590 was cancelled on November 2, 2009, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 6685015591638. 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, with the most recent procurement date of Aug 07, 2009. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM7L309M3476. The total value of the awarded contracts has been US$ 743.76.
This NSN is assigned to Item Name Code (INC) 16516. [AN AUTOMATIC REGULATING DEVICE WHICH CONTROLS THE FLOW OF FLUIDS OR GASES BY ACTUATING A VALVE OR SHUTTER FOR HEATING OR COOLING PURPOSES. MAY BE ADJUSTABLE, OR SET TO OPERATE AT A DEFINITE PRESSURE. EXCLUDES:CONTROL, HUMIDITY; CONTROL, TEMPERATURE INDICATING; AND SWITCH, THERMOSTATIC.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 6685015575590 does not contain precious metals.
This information was last updated on Jul 01, 2025.