PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

204-1Ammeter

Jewell Instruments Llc · NSN 6625-00-839-9548 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-839-9548 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-839-9548. Primary manufacturer part number: 204-1.
Features
  • Ammeter — FSC 6625
  • Power Source: EXTERNAL
  • Mounting Arrangement Style: FOUR HOLE/STUD RECTANGULAR/SQUARE
  • Environmental Protection: DUST RESISTANT
  • Movement Suspension Method: JEWEL PIVOT BASE
  • Pointer Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Mounting Stud Diameter: 0.112 INCHES NOMINAL IN
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
Applications
  • Applications requiring Plastic construction
General Description

The Ammeter, cataloged under National Stock Number 6625-00-839-9548, 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. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-839-9548
Primary Part Number204-1
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerJewell Instruments Llc
StatusCANCELLED
Power SourceEXTERNAL
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Environmental ProtectionDUST RESISTANT
Movement Suspension MethodJEWEL PIVOT BASE
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Mounting Stud Diameter0.112 INCHES NOMINAL IN
Circuit Attachment Method and Quantity2 THREADED STUD
Measurement Range+0.0 TO 50.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity4 THREADED STUD(S)
MaterialPLASTIC
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Features ProvidedMAGNETIC SHIELD AND ZERO ADJUSTER
FSC Application DataTEST SET,ELECTRONIC EQUIPMENT
Style DesignatorRECTANGULAR FLUSH MTG
Indicator TypeDIAL W/POINTER
Meter Body Diameter Behind Mounting Flange2.187 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Meter Depth Behind Mounting Flange1.390 INCHES NOMINAL IN
Mounting Stud Length0.500 INCHES NOMINAL IN
Nuclear Hardness Critical FeatureNONHARDENED
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Sensitivity Rating100.0 MILLIVOLTS
Installation DesignPANEL
Panel for Which DesignedMAGNETIC OR NONMAGNETIC
Scale Division Quantity25 SINGLE INDICATOR SINGLE RANGE
Movement TypeMOVING COIL, PERMANENT MAGNET
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Dielectric Withstanding Voltage in Volts2000.0
Circuit Current for Which DesignedDC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeLN
Verified Substitutes 12
No Item Name Available
6625-00-043-230501720 SUCCESSOR
Ammeter
Simpson Electric Company, Inc.
Ammeter
6625-00-618-9505B234T35 SUCCESSOR
Ammeter
Avtron Aerospace Inc
6625-01-054-36567914-3 SUCCESSOR
Meter,multiple Scale
General Microwave Corporation Div Kratos Microwave Electronics
Circuit Card Assembly
6625-00-051-9029 INTERCHANGEABLE
Galvanometer
6625-00-643-0599245-1037P2 INTERCHANGEABLE
Voltmeter
Raytheon Company Dba Raytheon Co
6625-00-752-7556 INTERCHANGEABLE
Ammeter
6625-00-782-8691 INTERCHANGEABLE
Wattmeter
Cross-Reference Index
Part NumberManufacturer
606B592A09 Westinghouse Electric Corp (USA)
S1203647 Hughes Corp Div Dba Weschler Instruments (USA)
S1203647 Westinghouse Electric Corp (USA)
127 Simpson Electric Company, Inc. (USA)
204-1 PRIMARY Jewell Instruments Llc (USA)
Related Parts
6625-00-079-4072SUCCESSOR
NO ITEM NAME AVAILABLE
6625-00-043-2305SUCCESSOR
AMMETER
01720
6625-00-070-1703SUCCESSOR
AMMETER
6625-00-618-9505SUCCESSOR
AMMETER
B234T35
6625-01-054-3656SUCCESSOR
METER,MULTIPLE SCALE
7914-3
5998-01-352-9949SUCCESSOR
CIRCUIT CARD ASSEMBLY
6625-00-051-9029INTERCHANGEABLE
GALVANOMETER
6625-00-643-0599INTERCHANGEABLE
VOLTMETER
245-1037P2
6625-00-752-7556INTERCHANGEABLE
AMMETER
6625-00-782-8691INTERCHANGEABLE
WATTMETER
6625-00-900-1298INTERCHANGEABLE
VOLTMETER
09140
5998-01-266-7276INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
1406AS810-1

Frequently Asked Questions

What is NSN 6625-00-839-9548?

NSN 6625-00-839-9548 is a Ammeter, manufactured by Jewell Instruments Llc, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-839-9548?

NSN 6625-00-839-9548 has 5 cross-referenced part numbers: 606B592A09 (Westinghouse Electric Corp), S1203647 (Hughes Corp Div Dba Weschler Instruments), S1203647 (Westinghouse Electric Corp), 127 (Simpson Electric Company, Inc.), 204-1 (Jewell Instruments Llc).

What NSN replaces 6625-00-839-9548?

There are 12 known substitutes for 6625-00-839-9548: 6625-00-079-4072, 6625-00-043-2305, 6625-00-070-1703 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 204-1?

Key specifications for 204-1: Power Source: EXTERNAL; Mounting Arrangement Style: FOUR HOLE/STUD RECTANGULAR/SQUARE; Environmental Protection: DUST RESISTANT; Movement Suspension Method: JEWEL PIVOT BASE. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-839-9548 still in active supply?

NSN 6625-00-839-9548 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.
PartsTable Design LLC · partstable.com