The Meter,electrical Frequency, cataloged under National Stock Number 6625-00-643-0549, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6625-00-643-0549 |
| Item Name | Meter,electrical Frequency |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Status | ACTIVE |
| Features Provided | INTERNAL BATTERY ACCOMMODATION AND INTERNAL FREQUENCY CALIBRATING CRYSTAL |
| Material | ALUMINUM |
| Frequency Response Range | +20.0 TO 450.0 MEGAHERTZ |
| Furnished Items and Quantity | SET OF HEADPHONES 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| TS323UR | 3/2 Design control — primary reference U.S. Government activity |
NSN 6625-00-643-0549 is a Meter,electrical Frequency, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6625-00-844-8476. Verify interchangeability with system specifications before substitution.
Key specifications for 6625-00-643-0549: Overall Height: 14.312 INCHES NOMINAL IN; Overall Length: 11.125 INCHES NOMINAL IN; Overall Width: 9.500 INCHES NOMINAL IN; Features Provided: INTERNAL BATTERY ACCOMMODATION AND INTERNAL FREQUENCY CALIBRATING CRYSTAL. 4 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.