National Stock Number
6635-01-281-7542
National Stock Number (NSN) 6635-01-281-7542, or NIIN 012817542, (tester,material hardness) was assigned June 30, 1988 in the Federal Logistics Information System (FLIS). NIIN 012817542 was cancelled on August 29, 2018, 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 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, 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Oct 21, 2020, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
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 critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6635012817542 does not contain precious metals.
This information was last updated on Aug 01, 2025.