National Stock Number
6685-01-390-6257
National Stock Number (NSN) 6685-01-390-6257, or NIIN 013906257, (tester,pyrometer and thermocoupl) was assigned May 23, 1994 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers 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, only one supplier is 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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2020, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 07344. [AN INSTRUMENT USED FOR CHECKING THERMOCOUPLES AND PYROMETERS. IT IS DESIGNED WITH A COMPENSATOR WHICH CAN BE ADJUSTED SO THAT THE MEASURED ELECTROMOTIVE FORCE, CORRECTED TO A STANDARD REFERENCE TEMPERATURE, CAN BE READ DIRECTLY FROM A SCALE. IT CAN BE USED AS A PH METER. EXCLUDES:RESISTOR, VARIABLE, WIRE WOUND; RESISTOR, VARIABLE, NONWIRE WOUND; METER, HYDROGEN ION TEST; AND PYROMETER (AS MODIFIED).]. 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 6685013906257 does not contain precious metals.
This information was last updated on Aug 01, 2025.