The Ammeter, cataloged under National Stock Number 6625-01-047-4904, 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 Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-01-047-4904 |
| Primary Part Number | 139663-3 |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| FSC Application Data | TEST SET,ELECT. EQUIP. |
| Circuit Current for Which Designed | DC |
| Movement Type | MOVING COIL, PERMANENT MAGNET |
| Reliability Indicator | NOT ESTABLISHED |
| Installation Design | PANEL |
| 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 |
| Unit of Issue | EA |
| Acquisition advice code | ZN |
| Weight | 1.0000 lbs |
| Cube | 0.0336 cu ft |
| Part Number | Manufacturer |
|---|---|
| 139663-3 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| 000-17351 | Phaostron Instrument and Electronic Company (USA) |
| 243019 | Jewell Instruments Llc (USA) |
| Reference | Meaning |
|---|---|
| M3251 | 5/9 Secondary reference Metermaster Inc Miscorp Div |
| 139663-3 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 6625-01-047-4904 is a Ammeter, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-047-4904 has 3 manufacturer part numbers on file: 139663-3 (Honeywell International, Inc Div Aerospace-Tucson), 000-17351 (Phaostron Instrument and Electronic Company), 243019 (Jewell Instruments Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-132-0606, 6105-01-210-5533. Verify interchangeability with system specifications before substitution.
Key specifications for 139663-3: FSC Application Data: TEST SET,ELECT. EQUIP.; Circuit Current for Which Designed: DC; Movement Type: MOVING COIL, PERMANENT MAGNET; Reliability Indicator: NOT ESTABLISHED. 5 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.