The Ammeter, cataloged under National Stock Number 6625-01-258-4113, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-01-258-4113 |
| Primary Part Number | 2902631-17 |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Meter Body Diameter Behind Mounting Flange | 2.150 INCHES NOMINAL IN |
| Indicator Type | DIAL W/POINTER |
| Mounting Arrangement Style | THREE HOLE/STUD BOLT CIRCLE |
| Meter Depth Behind Mounting Flange | 1.170 INCHES NOMINAL IN |
| Circuit Current for Which Designed | DC |
| Accuracy in Percent | -2.0 TO 2.0 AT FULL SCALE FIRST INDICATOR SINGLE RANGE |
| Accuracy in Percent | -2.0 TO 2.0 AT FULL SCALE SECOND INDICATOR ALL RANGES |
| Overall Diameter | 2.695 INCHES MAXIMUM IN |
| Panel for Which Designed | MAGNETIC OR NONMAGNETIC |
| Style Designator | ROUND FLUSH MTG |
| Mounting Hole Diameter | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Features Provided | ZERO ADJUSTER |
| Scale Division Quantity | 5 FIRST INDICATOR SINGLE RANGE |
| Mounting Bolt Circle Diameter | 2.440 INCHES NOMINAL IN |
| Dial Scale Marking Color | BLACK FIRST INDICATOR SINGLE RANGE |
| Dial Scale Marking Color | GREEN SECOND INDICATOR SECOND RANGE |
| Dial Scale Marking Color | RED SECOND INDICATOR FIRST RANGE |
| Dial Scale Marking Color | RED SECOND INDICATOR FOURTH RANGE |
| Dial Scale Marking Color | WHITE SECOND INDICATOR THIRD RANGE |
| Scale Graduation Type | LINEAR FIRST INDICATOR SINGLE RANGE |
| Nuclear Hardness Critical Feature | NONHARDENED |
| 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 | Z |
| Weight | 0.6172 lbs |
| Cube | 0.0473 cu ft |
| Part Number | Manufacturer |
|---|---|
| 2902631-17 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 621-2902631-17 | Phaostron Instrument and Electronic Company (USA) |
| Reference | Meaning |
|---|---|
| 2521-2902631-17 | 5/9 Secondary reference Solartron Electronics Inc Weston Instruments Div |
| 125R-2902631-17 | 5/9 Secondary reference Simpson Electric Company, Inc. |
| 2521-2902631-17 | 5/9 Secondary reference Metermaster Inc Metermod Div |
NSN 6625-01-258-4113 is a Ammeter, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-258-4113 has 2 manufacturer part numbers on file: 2902631-17 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 621-2902631-17 (Phaostron Instrument and Electronic Company).
Key specifications for 2902631-17: Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Meter Body Diameter Behind Mounting Flange: 2.150 INCHES NOMINAL IN; Indicator Type: DIAL W/POINTER; Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE. 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.