National Stock Number (NSN) 6635-00-945-1221, or NIIN 009451221, (transducer,supersonic test) was assigned February 18, 1966 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 5 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Jan 29, 2015. 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 4 different suppliers. The last contract numbers awarded were: SPE4A615V8106, SPE4A415M0454, SPE4A614VN152, SPE4A614VG581, SPM4A612V4545. The total value of the awarded contracts has been US$ 16,884.66.
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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government does not have adequate data, lacks rights to data, or both, needed to purchase this part from additional sources. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 18685. [AN ITEM SPECIFICALLY DESIGNED TO TRANSMIT SUPERSONIC FREQUENCY WAVE MOTION ENERGY TO ANOTHER ITEM UNDER TEST, AND TO RECEIVE COMPONENTS OF REFLECTED ENERGY, THE CHARACTERISTICS OF WHICH WHEN INTERPRETED ON AN ASSOCIATED INDICATOR, PROVIDES FACILITIES FOR THE DETERMINATION OF FLAWS OR OTHER IRREGULARITIES OF THE ITEM UNDER TEST. DOES NOT INCLUDE THE INDICATOR. SEE ALSO TRANSDUCER, MOTIONAL PICKUP AND DETECTOR, METAL FLAW, ELECTRONIC.]. 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 6635009451221 does not contain precious metals.
This NSN is associated to Schedule B 9027509000: instrument and apparatus for physical or chemical analysis using optical radiations, 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 Aug 01, 2025.