The Circulator,radio Frequency, cataloged under National Stock Number 5985-01-089-5320, 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 Microwave Devices Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-089-5320 |
| Primary Part Number | 1620034 |
| Item Name | Circulator,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Devices Inc |
| Status | ACTIVE |
| FSC Application Data | RADAR ANTENNA SUPPORT SET AND RADOMES,EXCEPT SPECIALLY DESIGNED |
| Precious Material | SILVER |
| Precious Material and Weight | 1.000 SILVER GRAINS, TROY |
| Frequency Range Rating | +5.4 TO 5.9 GIGAHERTZ |
| Insertion Loss in Decibels | 0.6 |
| Precious Material and Location | TERMINAL SILVER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1620034 | Microwave Devices Inc (USA) |
| Reference | Meaning |
|---|---|
| B200357P | 3/9 Design control — primary reference Vega Precision Laboratories Inc Sub of Herley Industries Inc |
| 304835-1 | 5/9 Secondary reference Vega Precision Laboratories Inc Sub of Herley Industries Inc |
NSN 5985-01-089-5320 is a Circulator,radio Frequency, manufactured by Microwave Devices Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-089-5320 has 1 manufacturer part number on file: 1620034 (Microwave Devices Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-509-1661, 2540-01-566-0651. Verify interchangeability with system specifications before substitution.
Key specifications for 1620034: Overall Height: 0.750 INCHES NOMINAL IN; FSC Application Data: RADAR ANTENNA SUPPORT SET AND RADOMES,EXCEPT SPECIALLY DESIGNED; Precious Material: SILVER; Precious Material and Weight: 1.000 SILVER GRAINS, TROY. 6 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.
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.