National Stock Number (NSN) 6630-00-428-7000, or NIIN 004287000, (hydrometer,graduated scale) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. 2 of those 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, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over a year. There have been 6 contracts issued for this part number, with 6 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE2DH24V1794, SPE2DH20V0174, SPE2DH19P2064, SPE2DH19P2064, SPE2DH19P0958. The total value of the awarded contracts has been US$ 1,170.72.
This NSN is fairly common among different weapons systems, belonging to 12 different platforms.
There has been a small amount of 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 Dec 02, 2006, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part is a commercial/non-developmental/off-the-shelf-item. Valid AMCs: 1, 2, 3, 4 and 5.
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 6630004287000 contains an unknown precious metal.
This NSN is associated to Schedule B 9027803200: chemical analysis instruments and apparatus, nesoi. The Schedule B End Use is listed as laboratory testing instruments. NAICS classification category 334516: analytical laboratory instrument manufacturing.
This information was last updated on Jul 01, 2025.