National Stock Number
6635-00-663-4576
National Stock Number (NSN) 6635-00-663-4576, or NIIN 006634576, (tester,material hardness) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 6635005665199, 6635005266202, 6635005266208.
There are 4 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 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. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over a year. There have been 18 contracts issued for this part number, with 18 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 8 different suppliers. The last contract numbers awarded were: SPE4A421V0215, SPE4A421V0213, SPE4A420P0071, SPE4A419V0167, SPE4A418V7449. The total value of the awarded contracts has been US$ 417,848.12.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 19,179. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Mar 28, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 18992. [AN INSTRUMENT DESIGNED TO MEASURE THE HARDNESS OF METALS, PLASTICS, RUBBER, AND OTHER SOLIDS, BY METHODS BASED ON RESISTANCE TO PENETRATION BY AN INDENTER OF GREATER HARDNESS THAN THE MATERIAL BEING TESTED.]. 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 6635006634576 does not contain precious metals.
This information was last updated on Apr 01, 2025.