The Crystal Detector, cataloged under National Stock Number 5985-01-127-0355, 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. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Crystal Detector |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Keysight Technologies Inc (CAGE 7ZXR5) |
| Parameter | Value |
|---|---|
| NSN | 5985-01-127-0355 |
| Primary Part Number | 423B/X281C |
| Item Name | Crystal Detector |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 423B/X281C PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| X424A-H15 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 423B/X281C | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| 423B/X281C | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
NSN 5985-01-127-0355 is a Crystal Detector, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-127-0355 has 1 manufacturer part number on file: 423B/X281C (Keysight Technologies Inc).
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.