The Isolator,radio Frequency Reflect, cataloged under National Stock Number 5985-01-330-5583, 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 Siemens Corp. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-330-5583 |
| Primary Part Number | 4N28-584 |
| Item Name | Isolator,radio Frequency Reflect |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Siemens Corp |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Connector Quantity | 6 |
| 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 |
|---|---|
| 4N28-584 | Siemens Corp (USA) |
| Reference | Meaning |
|---|---|
| 851790 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-330-5583 is a Isolator,radio Frequency Reflect, manufactured by Siemens Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-330-5583 has 1 manufacturer part number on file: 4N28-584 (Siemens Corp).
Key specifications for 4N28-584: Overall Height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Overall Length: 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN; Overall Width: 0.280 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN. 2 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.