The Ammeter,dc, cataloged under National Stock Number 6620-01-466-2835, is classified within Federal Supply Class 6620 (Engine Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Phaostron Instrument and Electronic Company. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6620-01-466-2835 |
| Primary Part Number | 628L-20944 |
| Item Name | Ammeter,dc |
| FSC / FSG | 6620 / 66 — Engine Instruments |
| Manufacturer | Phaostron Instrument and Electronic Company |
| Status | ACTIVE |
| Overall Diameter | 2.695 INCHES NOMINAL IN |
| General Characteristics Item Description | INDICATOR TYPE IS DIAL WITH POINTER; ACCURACY IN PERCENT IS MINUS 2.0 TO 2.0 AT FULL SCALE SINGLE; 3000.0 DIELECTRIC WITHSTANDING VOLTAGE IN VOLTS; EXTERNAL POWER SOURCE; METER BODY DIAMETER BEHIND MOUNTING FLANGE 2.211 IN.; METER DEPTH BEHIND MOUNTING FLANGE 1.660 IN.; MOUNTING FACILITY IS 3 UNTHREADED HOLES; WATERTIGHT; MOUNTING HOLE DIA 0.125 IN. IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 628L-20944 PRIMARY | Phaostron Instrument and Electronic Company (USA) |
| Reference | Meaning |
|---|---|
| 3468AS1300 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 6620-01-466-2835 is a Ammeter,dc, manufactured by Phaostron Instrument and Electronic Company, classified under FSC 6620, Engine Instruments. Status: active.
NSN 6620-01-466-2835 has 1 manufacturer part number on file: 628L-20944 (Phaostron Instrument and Electronic Company).
Key specifications for 628L-20944: Overall Diameter: 2.695 INCHES NOMINAL IN; General Characteristics Item Description: INDICATOR TYPE IS DIAL WITH POINTER; ACCURACY IN PERCENT IS MINUS 2.0 TO 2.0 AT FULL SCALE SINGLE; 3000.0 DIELECTRIC WITHSTANDING VOLTAGE IN VOLTS; EXTERNAL POWER SOURCE; METER BODY DIAMETER BEHIND MOUNTING FLANGE 2.211 IN.; METER DEPTH BEHIND MOUNTING FLANGE 1.660 IN.; MOUNTING FACILITY IS 3 UNTHREADED HOLES; WATERTIGHT; MOUNTING HOLE DIA 0.125 IN. IN; Overall Length: 2.520 INCHES NOMINAL IN; End Item Identification: A/S37A-3 MOBILE ELECTRICAL POWER PLANT. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.