The Ammeter, cataloged under National Stock Number 6625-01-040-0749, 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 Simpson Electric Company, Inc.. Government technical data includes 27 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6625-01-040-0749 |
| Primary Part Number | 03300 |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Simpson Electric Company, Inc. |
| Status | ACTIVE |
| Circuit Construction Type | NONELECTRONIC |
| Mounting Facility Type and Quantity | 4 THREADED STUD(S) |
| Meter Body Diameter Behind Mounting Flange | 2.730 INCHES NOMINAL IN |
| FSC Application Data | TEST SET,ELECT. EQUIP. |
| Indicator Type | DIAL W/POINTER |
| Mounting Arrangement Style | FOUR HOLE/STUD RECTANGULAR/SQUARE |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Meter Depth Behind Mounting Flange | 1.185 INCHES NOMINAL IN |
| Circuit Current for Which Designed | AC |
| Scale Selection Method | TERMINAL |
| Movement Type | MOVING IRON VANE |
| Accuracy in Percent | -3.0 TO 3.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 4.000 INCHES NOMINAL IN |
| Mounting Stud Diameter | 0.138 INCHES NOMINAL IN |
| Panel for Which Designed | NONMAGNETIC |
| Power Source | EXTERNAL |
| Style Designator | RECTANGULAR FLUSH MTG |
| Features Provided | ZERO ADJUSTER |
| Color | UNABLE TO DECODE |
| Pointer Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Surface Treatment | PAINT |
| Mounting Stud Length | 0.650 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 3.560 INCHES NOMINAL IN |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Material | PLASTIC |
| Sensitivity Rating | 5.0 AMPERES |
| Scale Graduation Type | NONLINEAR 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 | J |
| Part Number | Manufacturer |
|---|---|
| 03300 PRIMARY | Simpson Electric Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1359-03300 | 5/9 Secondary reference Simpson Electric Company, Inc. |
| 1359-0-5AMPAC | C/1 Advisory reference — outside the item-of-supply concept Simpson Electric Company, Inc. |
| 3300 | 5/9 Secondary reference Simpson Electric Company, Inc. |
NSN 6625-01-040-0749 is a Ammeter, manufactured by Simpson Electric Company, Inc., classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-040-0749 has 1 manufacturer part number on file: 03300 (Simpson Electric Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6240-01-062-0878. Verify interchangeability with system specifications before substitution.
Key specifications for 03300: Circuit Construction Type: NONELECTRONIC; Mounting Facility Type and Quantity: 4 THREADED STUD(S); Meter Body Diameter Behind Mounting Flange: 2.730 INCHES NOMINAL IN; Overall Height: 4.016 INCHES NOMINAL IN. 27 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.