The Ammeter, cataloged under National Stock Number 6625-01-021-1313, 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 27 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6625-01-021-1313 |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Status | ACTIVE |
| Circuit Construction Type | NONELECTRONIC |
| Mounting Facility Type and Quantity | 4 SCREW AND 4 UNTHREADED HOLE(S) |
| Meter Body Diameter Behind Mounting Flange | 3.980 INCHES MAXIMUM 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 | 10.000 INCHES MAXIMUM IN |
| Circuit Current for Which Designed | AC |
| Movement Type | MOVING IRON VANE |
| Accuracy in Percent | -1.5 TO 1.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.373 INCHES MINIMUM AND 3.379 INCHES MAXIMUM IN |
| Special Test Features | CONFORMS TO MIL-M-16034/4 |
| Panel for Which Designed | MAGNETIC |
| Supplementary Features | DAMPING FACTOR 3; RESPONSE TIME 2.5 SECONDS MAXIMUM |
| Power Source | EXTERNAL |
| Style Designator | RECTANGULAR FLUSH MTG |
| Mounting Hole Diameter | 0.312 INCHES NOMINAL IN |
| Features Provided | ZERO ADJUSTER |
| Specification/standard Data | 81349-MIL-M-16034/4 GOVERNMENT SPECIFICATION |
| Movement Suspension Method | TAUT BAND |
| Color | UNABLE TO DECODE |
| Pointer Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Environmental Protection | COLD RESISTANT AND HEAT RESISTANT AND HUMIDITY PROOF AND VIBRATION RESISTANT |
| Frequency Rating | 400.0 HERTZ NOMINAL |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 3.373 INCHES MINIMUM AND 3.379 INCHES MAXIMUM IN |
| Test Data Document | 81349-MIL-M-16034 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| 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 | JF |
| Weight | 3.0000 lbs |
| Cube | 0.2690 cu ft |
| Reference | Meaning |
|---|---|
| MR49W80AFAAH | C/1 Advisory reference — outside the item-of-supply concept General Electric Co Outdoor Breaker Business Section |
| MR49W080AFAAH | 2/2 Government specification standardization U.S. Government activity |
| A57878 | C/1 Advisory reference — outside the item-of-supply concept Nei Peebles-Electric Products Inc |
| MIL-DTL-16034/4 | 4/1 Identification reference U.S. Government activity |
| 496-008 | C/1 Advisory reference — outside the item-of-supply concept Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging |
| MIL-M-16034/4 | 5/9 Secondary reference U.S. Government activity |
| MR49080AFAAH | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 6625-01-021-1313 is a Ammeter, 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): 6515-01-471-7877. Verify interchangeability with system specifications before substitution.
Key specifications for 6625-01-021-1313: Circuit Construction Type: NONELECTRONIC; Mounting Facility Type and Quantity: 4 SCREW AND 4 UNTHREADED HOLE(S); Meter Body Diameter Behind Mounting Flange: 3.980 INCHES MAXIMUM IN; Overall Height: 4.250 INCHES MINIMUM AND 4.750 INCHES MAXIMUM 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.