The Isolator,radio Frequency Reflect, cataloged under National Stock Number 5985-00-289-9857, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Raytheon Company Div Rmd Strategic. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-289-9857 |
| Primary Part Number | 723898-989 |
| Item Name | Isolator,radio Frequency Reflect |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Raytheon Company Div Rmd Strategic |
| Status | ACTIVE |
| FSC Application Data | ISOLATOR,9RADIO2FREQUENCYGREFLECTION,1RADAR,NNONAIRBORNE,XEXCEPT2FIREKCONTROL4AND9GUIDED4MISSILE |
| Angular Displacement Between Flange Contact Surfaces in Deg | 120.0 |
| Controlling Agency | HUGHES AIRCRAFT,CULVER CITY CALIF |
| Trade Designation | CONNECTOR,RECEPTACLE,ELECTRICAL |
| Identifying Number | 1055A TYPE NO. A |
| Connector Quantity | 3 |
| Frequency Range Rating | +675.0 TO 725.0 MEGAHERTZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 723898-989 PRIMARY | Raytheon Company Div Rmd Strategic (USA) |
| Reference | Meaning |
|---|---|
| 1055A | 5/2 Secondary reference U.S. Government activity |
| 723898-989 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-00-289-9857 is a Isolator,radio Frequency Reflect, manufactured by Raytheon Company Div Rmd Strategic, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-289-9857 has 1 manufacturer part number on file: 723898-989 (Raytheon Company Div Rmd Strategic).
3 possible matches (shared part number, not a government interchangeability claim): 5977-01-008-4807, 5330-01-022-8005, 6680-01-416-7911. Verify interchangeability with system specifications before substitution.
Key specifications for 723898-989: Overall Height: 2.130 INCHES NOMINAL IN; FSC Application Data: ISOLATOR,9RADIO2FREQUENCYGREFLECTION,1RADAR,NNONAIRBORNE,XEXCEPT2FIREKCONTROL4AND9GUIDED4MISSILE; Angular Displacement Between Flange Contact Surfaces in Deg: 120.0; Controlling Agency: HUGHES AIRCRAFT,CULVER CITY CALIF. 7 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5985-00-289-9857 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.