National Stock Number
6635-00-018-5844
National Stock Number (NSN) 6635-00-018-5844, or NIIN 000185844, (transducer,ultrasonic) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.
There are 8 manufacturer part numbers associated with this NSN. 6 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 11 suppliers. Today, 5 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 17 contracts issued for this part number, with 17 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 10 different suppliers. The last contract numbers awarded were: SPE4A625V108Z, SPE4A625P5163, SPE4A624PV972, SPE4A624PK460, SPE4A624P7392. The total value of the awarded contracts has been US$ 36,915.28.
This NSN is somewhat common among different platforms, belonging to 5 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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 25, 2008, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 77777. 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 6635000185844 contains an unknown precious metal.
This NSN is associated to Schedule B 9027908950: parts and accessories of instruments & apparatus for physical or chemical analysis, nesoi. The Schedule B End Use is listed as measuring, testing, control instruments. NAICS classification category 334516: analytical laboratory instrument manufacturing.
This information was last updated on Jul 01, 2025.