The Meter,field Strength, cataloged under National Stock Number 6625-01-355-2830, 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 Digital Alert Systems, Inc. Dba Digital Alert Systems Inc. Government technical data includes 23 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6625-01-355-2830 |
| Primary Part Number | 257D |
| Item Name | Meter,field Strength |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Digital Alert Systems, Inc. Dba Digital Alert Systems Inc |
| Status | ACTIVE |
| Operating Voltage Rating in Volts | 90.0 AC MINIMUM AND 260.0 AC MAXIMUM AND 6.0 DC NOMINAL |
| Phase | SINGLE |
| Indicator Type | DIAL W/POINTER |
| Circuit Attachment Method and Quantity | 1 SENSOR |
| Circuit Current for Which Designed | AC OR DC |
| Scale Selection Method | SWITCH |
| Accuracy in Percent | -5.0 TO 5.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES |
| Style Designator | PORTABLE |
| Features Provided | PORTABLE AND INTERNAL BATTERY ACCOMMODATION |
| Color | UNABLE TO DECODE |
| Pointer Color | BLACK SINGLE INDICATOR ALL RANGES |
| Frequency Rating | 50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR ALL RANGES |
| Scale Graduation Type | NONLINEAR SINGLE INDICATOR ALL RANGES |
| Measurement Range | -0.1 TO 0.1 VOLTS PER METER SINGLE INDICATOR FIRST RANGE |
| Measurement Range | -0.2 TO 0.2 VOLTS PER METER SINGLE INDICATOR SECOND RANGE |
| Measurement Range | -0.5 TO 0.5 VOLTS PER METER SINGLE INDICATOR THIRD RANGE |
| Measurement Range | -1.0 TO 1.0 VOLTS PER METER SINGLE INDICATOR FOURTH RANGE |
| Measurement Range | -10.0 TO 10.0 VOLTS PER METER SINGLE INDICATOR SEVENTH RANGE |
| Measurement Range | -2.0 TO 2.0 VOLTS PER METER SINGLE INDICATOR FIFTH RANGE |
| Measurement Range | -5.0 TO 5.0 VOLTS PER METER SINGLE INDICATOR SIXTH RANGE |
| Nuclear Hardness Critical Feature | NONHARDENED |
| Installation Design | BENCH |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Acquisition advice code | LU |
| Part Number | Manufacturer |
|---|---|
| 257D PRIMARY | Digital Alert Systems, Inc. Dba Digital Alert Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 0930115 | 5/9 Secondary reference Digital Alert Systems, Inc. Dba Digital Alert Systems Inc |
| 245 | 5/9 Secondary reference Digital Alert Systems, Inc. Dba Digital Alert Systems Inc |
NSN 6625-01-355-2830 is a Meter,field Strength, manufactured by Digital Alert Systems, Inc. Dba Digital Alert Systems Inc, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-355-2830 has 1 manufacturer part number on file: 257D (Digital Alert Systems, Inc. Dba Digital Alert Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-514-4660. Verify interchangeability with system specifications before substitution.
Key specifications for 257D: Operating Voltage Rating in Volts: 90.0 AC MINIMUM AND 260.0 AC MAXIMUM AND 6.0 DC NOMINAL; Phase: SINGLE; Indicator Type: DIAL W/POINTER; Circuit Attachment Method and Quantity: 1 SENSOR. 23 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.