The Attenuator,variable, cataloged under National Stock Number 5985-01-412-0439, 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 Keysight Technologies Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-412-0439 |
| Primary Part Number | 355D-H89 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Application Design | WAVEGUIDE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 355DOPTIONH89 | Keysight Technologies Inc (USA) |
| 355D-H89 PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 355DOPTIONH89 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 355D-H89 | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| 355DOPTIONH89 | 5/9 Secondary reference Keysight Technologies, Inc. |
| 355D-H89 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
NSN 5985-01-412-0439 is a Attenuator,variable, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-412-0439 has 2 manufacturer part numbers on file: 355DOPTIONH89 (Keysight Technologies Inc), 355D-H89 (Keysight Technologies Inc).
Key specifications for 355D-H89: End Item Identification: AIRCRAFT, EAGLE F-15; RADAR THREAT EMITER AN/MST-T1; Application Design: WAVEGUIDE. 1 specification is 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 5985-01-412-0439 has DEMIL Code Q. 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.