National Stock Number (NSN) 6625-00-539-8531, or NIIN 005398531, (detecting element,directional co) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 4 stock numbers: 6625010579150, 6625008838243, 6625009914989, 6625005322919.
There are 13 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 7 suppliers. Today, 5 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are 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 5 years, with the most recent procurement date of Dec 05, 2019. There have been 8 contracts issued for this part number, with 8 awards given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE7M120V2894, SPE7M119V6051, SPE7M916V0663, SPM7M912V7399, SPM7M912V7399. The total value of the awarded contracts has been US$ 29,710.23.
This NSN is very common among different weapons systems, belonging to 30 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 Apr 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) 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) 18641. [AN ITEM WHICH IS INSERTED IN A DIRECTIONAL COUPLER TO PROVIDE SPECIFIC FREQUENCY AND POWER MEASUREMENT RANGES FOR AN ASSOCIATED RADIO FREQUENCY WATTMETER. SEE ALSO PROBE, WAVEGUIDE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 6625005398531 contains an unknown precious metal.
This NSN is associated to Schedule B 9030908030: parts and accessories of articles of schedule b subheading 9030.39. The Schedule B End Use is listed as measuring, testing, control instruments. NAICS classification category 334515: instrument manufacturing for measuring and testing electricity and electrical signals.
This information was last updated on Aug 01, 2025.