The Meter,modulation, cataloged under National Stock Number 6625-00-643-3028, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-00-643-3028 |
| Item Name | Meter,modulation |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Status | ACTIVE |
| Meter Body Diameter Behind Mounting Flange | 2.750 INCHES NOMINAL IN |
| Mounting Arrangement Style | THREE HOLE/STUD BOLT CIRCLE |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Meter Depth Behind Mounting Flange | 1.000 INCHES NOMINAL IN |
| Circuit Current for Which Designed | DC |
| Overall Diameter | 3.500 INCHES NOMINAL IN |
| Style Designator | ROUND FLUSH MTG |
| Features Provided | ZERO ADJUSTER |
| Mounting Bolt Circle Diameter | 3.250 INCHES NOMINAL IN |
| Color | UNABLE TO DECODE |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Special Markings | CAPTION PERCENT MODULATION CENTER OF DIAL ON 2 LINES BELOW DIV SCALE |
| Material | PLASTIC |
| Sensitivity Rating | 105.0 MILLIVOLTS |
| Measurement Range | +0.0 TO 100.0 PERCENT DEVIATION SINGLE INDICATOR SINGLE RANGE |
| 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 | J |
| Weight | 0.6400 lbs |
| Cube | 0.0391 cu ft |
| Reference | Meaning |
|---|---|
| 1120-0040 | C/1 Advisory reference — outside the item-of-supply concept Hewlett-Packard Company Dba HP |
| 260549 | 3/9 Design control — primary reference Solartron Electronics Inc Weston Instruments Div |
NSN 6625-00-643-3028 is a Meter,modulation, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6150-01-392-8374. Verify interchangeability with system specifications before substitution.
Key specifications for 6625-00-643-3028: Meter Body Diameter Behind Mounting Flange: 2.750 INCHES NOMINAL IN; Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE; Circuit Attachment Method and Quantity: 2 THREADED STUD; Meter Depth Behind Mounting Flange: 1.000 INCHES NOMINAL IN. 16 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.