PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

181-00-00-32Ammeter

Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp · NSN 6625-00-631-7260 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-631-7260 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-631-7260. Primary manufacturer part number: 181-00-00-32.
Features
  • Ammeter — FSC 6625
  • Circuit Construction Type: NONELECTRONIC
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Mounting Bolt Circle Diameter: 2.440 INCHES NOMINAL IN
  • Movement Type: MOVING COIL, PERMANENT MAGNET
  • Overall Diameter: 2.695 INCHES NOMINAL IN
  • Meter Depth Behind Mounting Flange: 1.172 INCHES NOMINAL IN
  • Features Provided: ZERO ADJUSTER
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-631-7260, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp. Government technical data includes 29 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-631-7260
Primary Part Number181-00-00-32
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corp Dba Northrop Grumman Systems Corp
StatusACTIVE
Circuit Construction TypeNONELECTRONIC
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Movement TypeMOVING COIL, PERMANENT MAGNET
Overall Diameter2.695 INCHES NOMINAL IN
Meter Depth Behind Mounting Flange1.172 INCHES NOMINAL IN
Features ProvidedZERO ADJUSTER
Meter Body Diameter Behind Mounting Flange2.125 INCHES NOMINAL IN
Panel for Which DesignedNONMAGNETIC
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
ColorUNABLE TO DECODE
Sensitivity Rating250.0 MILLIVOLTS
Indicator TypeDIAL W/POINTER
Accuracy in Percent-5.0 TO 5.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Style DesignatorROUND FLUSH MTG
FSC Application DataTEST SET,ELECTRONIC EQUIPMENT
Scale Division Quantity40 SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Mounting Stud Diameter0.112 INCHES NOMINAL IN
Measurement Range+0.0 TO 200.0 MICROAMPERES, AC SINGLE INDICATOR SINGLE RANGE
Circuit Attachment Method and Quantity2 SOLDER STUD
Mounting Facility Type and Quantity3 THREADED STUD(S)
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedAC
Nuclear Hardness Critical FeatureNONHARDENED
Surface TreatmentENAMEL
Circuit Construction TypeNONELECTRONIC
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight1.0000 lbs
Cube0.1440 cu ft
Verified Substitutes 3
6530-00-461-16350145R INTERCHANGEABLE
Manometer Breathing
Bird Products Corp
6625-00-965-6003 INTERCHANGEABLE
Meter,audio Level
5120-01-223-2885 INTERCHANGEABLE
Pliers,retaining Ring
Cross-Reference Index
Part NumberManufacturer
181-00-00-32 Electro Magnetic Components Inc (USA)
145R Simpson Electric Co Simpson Instruments Div (USA)
181-00-00-32 PRIMARY Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA)
181-00-00-32REVD Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA)
Related Parts
6530-00-461-1635INTERCHANGEABLE
MANOMETER BREATHING
0145R
6625-00-965-6003INTERCHANGEABLE
METER,AUDIO LEVEL
5120-01-223-2885INTERCHANGEABLE
PLIERS,RETAINING RING

Frequently Asked Questions

What is NSN 6625-00-631-7260?

NSN 6625-00-631-7260 is a Ammeter, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-631-7260?

NSN 6625-00-631-7260 has 4 cross-referenced part numbers: 181-00-00-32 (Electro Magnetic Components Inc), 145R (Simpson Electric Co Simpson Instruments Div), 181-00-00-32 (Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp), 181-00-00-32REVD (Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp).

What NSN replaces 6625-00-631-7260?

There are 3 known substitutes for 6625-00-631-7260: 6530-00-461-1635, 6625-00-965-6003, 5120-01-223-2885. Verify interchangeability with system specifications before substitution.

What are the specifications of 181-00-00-32?

Key specifications for 181-00-00-32: Circuit Construction Type: NONELECTRONIC; Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE; Mounting Bolt Circle Diameter: 2.440 INCHES NOMINAL IN; Movement Type: MOVING COIL, PERMANENT MAGNET. 30 total characteristics are documented in the Federal Logistics Information System.

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