The Frequency Standard, cataloged under National Stock Number 6625-01-545-2878, 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. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6625-01-545-2878 |
| Primary Part Number | 5061B-003-004-908 |
| Item Name | Frequency Standard |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Unit Type | STANDARD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5061B-003-004-908 PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 5061B-003-004-908 | 3/9 Design control — primary reference Keysight Technologies, Inc. |
NSN 6625-01-545-2878 is a Frequency Standard, manufactured by Keysight Technologies Inc, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-545-2878 has 1 manufacturer part number on file: 5061B-003-004-908 (Keysight Technologies Inc).
Key specifications for 5061B-003-004-908: Unit Type: STANDARD; Special Features: MENU DRIVEN OPERATION; CLOCK AND MESSAGE DISPLAYS; COMPLETE STATUS INFORMATION; AUTOMATIC LOGGING OF MAJOR INTERNAL EVENTS; AUTOMATIC SYNCHRONIZATION OF 1PPS SIGNAL; FULL CLOCK AND FREQUENCY CONTROL; HIGH-PERFORMANCE CESIUM BEAM TUBE. 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 6625-01-545-2878 has DEMIL Code B. 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.