The Voltmeter, cataloged under National Stock Number 6625-01-477-0732, 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 Phaostron Instrument and Electronic Company. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-01-477-0732 |
| Primary Part Number | 628-20978 |
| Item Name | Voltmeter |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Phaostron Instrument and Electronic Company |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Meter Body Diameter Behind Mounting Flange | 2.210 INCHES MAXIMUM IN |
| Indicator Type | DIAL W/POINTER |
| Mounting Arrangement Style | THREE HOLE/STUD TRIANGULAR |
| Meter Depth Behind Mounting Flange | 2.120 INCHES MAXIMUM IN |
| Circuit Current for Which Designed | AC |
| Overall Diameter | 2.695 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.000 INCHES NOMINAL IN |
| Style Designator | ROUND FLUSH MTG |
| Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Scale Division Quantity | 4 SINGLE INDICATOR SINGLE RANGE |
| Color | UNABLE TO DECODE |
| Pointer Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Dial Scale Marking Color | RED AND BLACK SINGLE INDICATOR SINGLE RANGE |
| Scale Graduation Type | LINEAR SINGLE INDICATOR SINGLE RANGE |
| 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 | ZZ |
| Weight | 0.5080 lbs |
| Cube | 0.0127 cu ft |
| Part Number | Manufacturer |
|---|---|
| 628-20978 PRIMARY | Phaostron Instrument and Electronic Company (USA) |
| 26.6001 | Ideal Precision Meter Co Dba Ideal Precision Meter Co (USA) |
| Reference | Meaning |
|---|---|
| 98-19691 | 7/2 Vendor item drawing reference Department of Defense Project Manager-Mobile Electric Power |
NSN 6625-01-477-0732 is a Voltmeter, manufactured by Phaostron Instrument and Electronic Company, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-477-0732 has 2 manufacturer part numbers on file: 628-20978 (Phaostron Instrument and Electronic Company), 26.6001 (Ideal Precision Meter Co Dba Ideal Precision Meter Co).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-562-5374. Verify interchangeability with system specifications before substitution.
Key specifications for 628-20978: Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Meter Body Diameter Behind Mounting Flange: 2.210 INCHES MAXIMUM IN; Indicator Type: DIAL W/POINTER; Mounting Arrangement Style: THREE HOLE/STUD TRIANGULAR. 15 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.