PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

421-5Voltmeter

Jewell Instruments Llc · NSN 6625-00-004-7002 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-004-7002 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-004-7002. Primary manufacturer part number: 421-5.
Features
  • Voltmeter — FSC 6625
  • Dielectric Withstanding Voltage in Volts: 3000.0
  • Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S)
  • Pointer Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
  • Features Provided: ZERO ADJUSTER
  • Scale Graduation Type: LINEAR SINGLE INDICATOR SINGLE RANGE
  • Movement Suspension Method: JEWEL PIVOT BASE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-004-7002, 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 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-004-7002
Primary Part Number421-5
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerJewell Instruments Llc
StatusACTIVE
Dielectric Withstanding Voltage in Volts3000.0
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Circuit Attachment Method and Quantity2 THREADED STUD
Features ProvidedZERO ADJUSTER
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Movement Suspension MethodJEWEL PIVOT BASE
Measurement Range+2.5 TO 3.2 VOLTS, DC SINGLE INDICATOR SINGLE RANGE
Power SourceEXTERNAL
Style DesignatorROUND FLUSH MTG
Nuclear Hardness Critical FeatureNONHARDENED
ColorUNABLE TO DECODE
Scale Division Quantity35 SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Mounting Bolt Circle Diameter2.438 INCHES NOMINAL IN
Indicator TypeDIAL W/POINTER
FSC Application DataTEST SET,ELECT. EQUIP.
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Meter Body Diameter Behind Mounting Flange2.047 INCHES NOMINAL IN
Meter Depth Behind Mounting Flange1.391 INCHES NOMINAL IN
Sensitivity Rating2000.0 OHMS PER VOLT
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedDC
Movement TypeMOVING COIL, PERMANENT MAGNET
Overall Diameter2.688 INCHES NOMINAL IN
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Installation DesignPANEL
Dielectric Withstanding Voltage in Volts3000.0
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Weight0.5800 lbs
Cube0.0346 cu ft
Verified Substitutes 12
5998-01-374-9287411839-001 SUCCESSOR
Extractor,electrical Card
L3harris Technologies, Inc. Dba L3harris Technologies Div Sas1
4730-00-136-4660 INTERCHANGEABLE
Flange,pipe
5815-00-199-6969 INTERCHANGEABLE
Teletypewriter Subassembly
5120-00-240-8703 INTERCHANGEABLE
Adapter,socket Wrench
3120-00-287-71321838670 INTERCHANGEABLE
Bearing,sleeve
Mack Trucks Inc Parts Opn
5930-00-448-7491A-4215 INTERCHANGEABLE
Switch Assembly
Taylor Made Environmental
6520-00-547-6160 INTERCHANGEABLE
Wheel,abrasive
6135-00-643-3485412 INTERCHANGEABLE
Battery,nonrechargeable
Eveready Battery Co Inc
5307-00-688-0130 INTERCHANGEABLE
Stud,plain
4820-00-727-216142-15 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
Cross-Reference Index
Part NumberManufacturer
421-5 PRIMARY Jewell Instruments Llc (USA)
2534852 Naval Sea Systems Command (USA)
2534852 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5998-01-374-9287SUCCESSOR
EXTRACTOR,ELECTRICAL CARD
411839-001
4730-00-136-4660INTERCHANGEABLE
FLANGE,PIPE
5815-00-199-6969INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
5120-00-240-8703INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
3120-00-287-7132INTERCHANGEABLE
BEARING,SLEEVE
1838670
5930-00-448-7491INTERCHANGEABLE
SWITCH ASSEMBLY
A-4215
6520-00-547-6160INTERCHANGEABLE
WHEEL,ABRASIVE
6135-00-643-3485INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
412
5307-00-688-0130INTERCHANGEABLE
STUD,PLAIN
4820-00-727-2161INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
42-15
4820-00-764-3294INTERCHANGEABLE
VALVE,CHECK
4215
5905-00-890-5661INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
RJS50K

Frequently Asked Questions

What is NSN 6625-00-004-7002?

NSN 6625-00-004-7002 is a Voltmeter, manufactured by Jewell Instruments Llc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-004-7002?

NSN 6625-00-004-7002 has 3 cross-referenced part numbers: 421-5 (Jewell Instruments Llc), 2534852 (Naval Sea Systems Command), 2534852 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 6625-00-004-7002?

There are 12 known substitutes for 6625-00-004-7002: 5998-01-374-9287, 4730-00-136-4660, 5815-00-199-6969 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 421-5?

Key specifications for 421-5: Dielectric Withstanding Voltage in Volts: 3000.0; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Pointer Color: BLACK SINGLE INDICATOR SINGLE RANGE; 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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