The Crystal Detector, cataloged under National Stock Number 6625-00-044-6827, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Item Name | Crystal Detector |
| FSC / FSG | 6625 — Electrical and Electronic Properties Measuring and Testing Instruments (FSG 66) |
| Manufacturers | Keysight Technologies Inc (CAGE 7ZXR5) |
| Parameter | Value |
|---|---|
| NSN | 6625-00-044-6827 |
| Primary Part Number | 423B/S281A |
| Item Name | Crystal Detector |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| 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) |
| Shelf Life Code | 0 |
| Unit of Issue | EA |
| Acquisition advice code | ZF |
| Weight | 1.2500 lbs |
| Cube | 0.0574 cu ft |
| Part Number | Manufacturer |
|---|---|
| 423B/S281A PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 423B/S281A | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| DMS84044B | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| 423B/S281A | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| S424A | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 426-6244 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 6625-00-044-6827 is a Crystal Detector, manufactured by Keysight Technologies Inc, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-00-044-6827 has 1 manufacturer part number on file: 423B/S281A (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.