National Stock Number
6640-01-268-8643
National Stock Number (NSN) 6640-01-268-8643, or NIIN 012688643, (bath,constant temperature) was assigned December 8, 1987 in the Federal Logistics Information System (FLIS). NIIN 012688643 was cancelled on May 1, 2010, 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 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, 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.
This NSN is assigned to Item Name Code (INC) 32951. [AN ITEM CONSISTING OF A RESERVOIR AND A TEMPERATURE CONTROL DEVICE. IT UTILIZES A LIQUID MEDIA TO HEAT OR CONTROL SAMPLES USED IN LABORATORY TESTING OF ORGANIC COATINGS, ASPHALT AND PETROLEUM PRODUCTS. IT CAN ALSO BE USED TO VERIFY THE ACCURACY OF TEMPERATURE SENSORS OR INSTRUMENTS. IT MAY INCLUDE SUCH COMPONENTS AND ACCESSORIES AS WATER JACKETS, HEATERS, COOLING COILS, CIRCULATING PUMPS, BOMBS, AND RACKS. EXCLUDES:WATER BATH, ELECTRIC AND WATER BATH, NONELECTRIC.]. 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 6640012688643 does not contain precious metals.
This information was last updated on Jul 01, 2025.