National Stock Number
5985-00-726-0940
National Stock Number (NSN) 5985-00-726-0940, or NIIN 007260940, (isolator,radio frequency reflect) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 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.
This part number has not been procured by the US Government in over 5 years.
This NSN is somewhat common among different platforms, belonging to 4 different weapons systems.
There has been very little 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 Mar 13, 2014, 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 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) 20347. [A DEVICE WHICH ALLOWS RADIO FREQUENCY ENERGY TO PASS IN ONE DIRECTION WITH VERY LITTLE POWER LOSS, BUT BLOCKS THE FLOW OF ENERGY IN THE OTHER DIRECTION BY MEANS OF MULTIPLE WAVE-POLARIZATION OR AN INTEGRAL DISSIPATIVE LOAD. IT ISOLATES FREQUENCY SENSITIVE CIRCUITY FROM THE EFFECTS OF REFLECTED RADIO FREQUENCY ENERGY RESULTING FROM COMPONENT MISMATCH. IT USUALLY HAS ONE OR MORE PORTS TERMINATED WITH COAXIAL CONNECTOR(S) AND/OR WAVEGUIDE FLANGE(S); OR OTHER ELECTRICAL TERMINATIONS. ISOLATORS DESIGNED FOR INTERNAL USE IN WAVEGUIDE RUNS MAY CONSIST OF RODS, RINGS, CHIPS, STRIPS AND THE LIKE AND HAVE NO PORTS OR TERMINATIONS. SEE ALSO DIPLEXER; DUPLEXER. EXCLUDES:CIRCULATOR, RADIO FREQUENCY.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. Information is in the Hazardous Materials Information Resource System (HMIRS). NSN 5985007260940 does not contain precious metals.
This NSN is associated to Schedule B 8529109000: antenna & antenna reflectors of all kinds; parts suitable for use soley or principally w/ apparatus of heading 8525 to 8528, nesoi. The Schedule B End Use is listed as telecommunications equipment. NAICS classification category 334220: radio and television broadcasting and wireless communications equipment manufacturing.
This information was last updated on Aug 01, 2025.