National Stock Number
6630-00-663-4499
National Stock Number (NSN) 6630-00-663-4499, or NIIN 006634499, (hydrometer,graduated scale) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 006634499 was cancelled on August 24, 2011, 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 3 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, there are no suppliers 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.
This NSN is assigned to Item Name Code (INC) 07185. [A HYDROMETER WITH A GRADUATED SCALE ON STEM CALIBRATED TO READ SPECIFIC GRAVITY, PERCENTAGE OF CONTENT(S), OR THE LIKE. SEE ALSO TESTER, ANTIFREEZE SOLUTIONS AND TESTER, BATTERY ELECTROLYTE SOLUTION.]. 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 6630006634499 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.