PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2021Ammeter

Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging · NSN 6625-00-945-4945 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-945-4945 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-945-4945. Primary manufacturer part number: 2021.
Features
  • Ammeter — FSC 6625
  • Features Provided: ZERO ADJUSTER
  • Power Source: EXTERNAL
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
  • Mounting Facility Type and Quantity: 4 THREADED STUD(S)
  • Measurement Range: +0.0 TO 1.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Pointer Color: BLACK SINGLE INDICATOR SINGLE RANGE
Applications
  • Applications requiring Plastic construction
General Description

The Ammeter, cataloged under National Stock Number 6625-00-945-4945, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-945-4945
Primary Part Number2021
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerJewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging
StatusACTIVE
Features ProvidedZERO ADJUSTER
Power SourceEXTERNAL
Circuit Attachment Method and Quantity2 THREADED STUD
Mounting Facility Type and Quantity4 THREADED STUD(S)
Measurement Range+0.0 TO 1.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
MaterialPLASTIC
Style DesignatorRECTANGULAR FLUSH MTG
FSC Application DataTEST SET,ELECT. EQUIP.
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Meter Depth Behind Mounting Flange1.240 INCHES MAXIMUM IN
ColorUNABLE TO DECODE
Nuclear Hardness Critical FeatureNONHARDENED
Meter Body Diameter Behind Mounting Flange2.210 INCHES MAXIMUM IN
Mounting Stud Diameter0.112 INCHES NOMINAL IN
Panel for Which DesignedNONMAGNETIC
Circuit Construction TypeNONELECTRONIC
Furnished Items and QuantityNUT 6; WASHER 6
Indicator TypeDIAL W/POINTER
Movement TypeMOVING COIL, PERMANENT MAGNET
Scale Division Quantity50 SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Mounting Stud Length0.510 INCHES MAXIMUM IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.880 INCHES NOMINAL IN
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Movement Suspension MethodJEWEL PIVOT BASE
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-781-5745 (7707590P42)
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJN
Weight0.1300 lbs
Cube0.0800 cu ft
Verified Substitutes 6
6625-00-781-57457707590P42 SUCCESSOR
Ammeter
Lockheed Martin Corporation Div Rms
5998-01-049-35351921 SUCCESSOR
Circuit Card Assembly
Gifft T H Co Inc
6625-01-120-0538476-0207-000 SUCCESSOR
Meter,standing Wave Ratio
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6625-01-346-067010592-001 SUCCESSOR
Meter,arbitrary Scale
Plainville Electrical Products Company, the Dba Plainville Electrical Products
6625-00-143-67034012877-0709 INTERCHANGEABLE
Voltmeter
Raytheon Company Dba Raytheon Co
5950-00-346-28406090741-29 INTERCHANGEABLE
Coil,radio Frequency
Lockheed Martin Corporation Div Rotary and Mission Systems
Cross-Reference Index
Part NumberManufacturer
2021 Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging (USA)
260629 Solartron Electronics Inc Weston Instruments Div (USA)
1921 Solartron Electronics Inc Weston Instruments Div (USA)
Related Parts
SUCCESSOR 6625-00-781-5745 Ammeter · 7707590P42
5998-01-049-3535SUCCESSOR
CIRCUIT CARD ASSEMBLY
1921
6625-01-120-0538SUCCESSOR
METER,STANDING WAVE RATIO
476-0207-000
6625-01-346-0670SUCCESSOR
METER,ARBITRARY SCALE
10592-001
6625-00-143-6703INTERCHANGEABLE
VOLTMETER
4012877-0709
5950-00-346-2840INTERCHANGEABLE
COIL,RADIO FREQUENCY
6090741-29

Frequently Asked Questions

What is NSN 6625-00-945-4945?

NSN 6625-00-945-4945 is a Ammeter, manufactured by Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-945-4945?

NSN 6625-00-945-4945 has 3 cross-referenced part numbers: 2021 (Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging), 260629 (Solartron Electronics Inc Weston Instruments Div), 1921 (Solartron Electronics Inc Weston Instruments Div).

What NSN replaces 6625-00-945-4945?

There are 6 known substitutes for 6625-00-945-4945: 6625-00-781-5745, 5998-01-049-3535, 6625-01-120-0538 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2021?

Key specifications for 2021: Overall Width: 2.810 INCHES MAXIMUM IN; Features Provided: ZERO ADJUSTER; Power Source: EXTERNAL; Circuit Attachment Method and Quantity: 2 THREADED STUD. 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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