PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

EG2Ammeter

Columbia Scientific Corp · NSN 6625-00-649-4178 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-649-4178 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-649-4178. Primary manufacturer part number: EG2.
Features
  • Ammeter — FSC 6625
  • Style Designator: ROUND FLUSH MTG
  • Accuracy in Percent: -1.5 TO 1.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Mounting Facility Type and Quantity: 3 FLANGE
  • Color: UNABLE TO DECODE
  • Meter Depth Behind Mounting Flange: 1.406 INCHES NOMINAL IN
  • Measurement Range: +0.0 TO 25.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
  • Circuit Current for Which Designed: DC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-649-4178, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Columbia Scientific Corp. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-649-4178
Primary Part NumberEG2
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerColumbia Scientific Corp
StatusCANCELLED
Style DesignatorROUND FLUSH MTG
Accuracy in Percent-1.5 TO 1.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity3 FLANGE
ColorUNABLE TO DECODE
Meter Depth Behind Mounting Flange1.406 INCHES NOMINAL IN
Measurement Range+0.0 TO 25.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedDC
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Scale Division Quantity25 SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Overall Diameter2.688 INCHES NOMINAL IN
Meter Body Diameter Behind Mounting Flange2.062 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Mounting Bolt Circle Diameter2.438 INCHES NOMINAL IN
Circuit Attachment Method and Quantity2 SOLDERLESS LUG
Style DesignatorROUND FLUSH MTG
Accuracy in Percent-1.5 TO 1.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity3 FLANGE
ColorUNABLE TO DECODE
Meter Depth Behind Mounting Flange1.406 INCHES NOMINAL IN
Measurement Range+0.0 TO 25.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedDC
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Scale Division Quantity25 SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Overall Diameter2.688 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor6625-01-425-8829 (080-1)
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.7500 lbs
Cube0.0320 cu ft
Verified Substitutes 11
No Item Name Available
6625-01-425-8829080-1 SUCCESSOR
Detecting Element,directional Co
Bird Electronic Corporation Div Bird Electronic Corp
5310-00-613-71702055-440 INTERCHANGEABLE
Nut,plain,hexagon
Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc
5999-00-622-2112 INTERCHANGEABLE
Delay Line
6625-00-740-6855331C149H09 INTERCHANGEABLE
Ammeter
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6625-00-781-57457707590P42 INTERCHANGEABLE
Ammeter
Lockheed Martin Corporation Div Rms
6115-00-860-2251 INTERCHANGEABLE
Generator Set,gasoline Engine
6110-01-254-1562 INTERCHANGEABLE
Regulator,voltage and Frequency
3990-01-437-68630801 INTERCHANGEABLE
Pallet,material Handling
Ultratech International, Inc Div Ultratech International
6680-01-507-33270801 INTERCHANGEABLE
Impeller,anemometer
Nielsen-Kellerman Co
Cross-Reference Index
Part NumberManufacturer
EG2 Columbia Scientific Corp (USA)
56HSR Hickok Waekon Llc (USA)
ADD Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging (USA)
0801 Columbia Scientific Corp (USA)
Related Parts
SUCCESSOR 6625-01-425-8829 Detecting Element,directional Co · 080-1
6625-00-648-8324SUCCESSOR
NO ITEM NAME AVAILABLE
5310-00-613-7170INTERCHANGEABLE
NUT,PLAIN,HEXAGON
2055-440
5999-00-622-2112INTERCHANGEABLE
DELAY LINE
6625-00-740-6855INTERCHANGEABLE
AMMETER
331C149H09
6625-00-781-5745INTERCHANGEABLE
AMMETER
7707590P42
6115-00-860-2251INTERCHANGEABLE
GENERATOR SET,GASOLINE ENGINE
6110-01-254-1562INTERCHANGEABLE
REGULATOR,VOLTAGE AND FREQUENCY
3990-01-437-6863INTERCHANGEABLE
PALLET,MATERIAL HANDLING
0801
6680-01-507-3327INTERCHANGEABLE
IMPELLER,ANEMOMETER
0801
6660-01-633-1828INTERCHANGEABLE
METEOROLOGICAL STATION,MANUAL
0801

Frequently Asked Questions

What is NSN 6625-00-649-4178?

NSN 6625-00-649-4178 is a Ammeter, manufactured by Columbia Scientific Corp, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-649-4178?

NSN 6625-00-649-4178 has 4 cross-referenced part numbers: EG2 (Columbia Scientific Corp), 56HSR (Hickok Waekon Llc), ADD (Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging), 0801 (Columbia Scientific Corp).

What NSN replaces 6625-00-649-4178?

There are 11 known substitutes for 6625-00-649-4178: 6625-00-648-8324, 6625-01-425-8829, 5310-00-613-7170 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of EG2?

Key specifications for EG2: Style Designator: ROUND FLUSH MTG; Accuracy in Percent: -1.5 TO 1.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE; Mounting Facility Type and Quantity: 3 FLANGE; Color: UNABLE TO DECODE. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-649-4178 still in active supply?

NSN 6625-00-649-4178 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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