PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

631-18047Voltmeter

Phaostron Instrument and Electronic Company · NSN 6625-01-038-6826 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-038-6826 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-038-6826. Primary manufacturer part number: 631-18047.
Features
  • Voltmeter — FSC 6625
  • Accuracy in Percent: -3.0 TO 3.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Environmental Protection: COLD RESISTANT AND HEAT RESISTANT AND SHOCK RESISTANT AND SUBMERSIBLE AND VIBRATION RESISTANT AND WATERTIGHT
  • Mounting Bolt Circle Diameter: 3.160 INCHES NOMINAL IN
  • Meter Depth Behind Mounting Flange: 1.660 INCHES MAXIMUM IN
  • Movement Type: MOVING COIL, PERMANENT MAGNET
  • Measurement Range: +100.0 TO 300.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
  • Mounting Stud Length: 0.500 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-01-038-6826, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Phaostron Instrument and Electronic Company. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-038-6826
Primary Part Number631-18047
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerPhaostron Instrument and Electronic Company
StatusACTIVE
Accuracy in Percent-3.0 TO 3.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Environmental ProtectionCOLD RESISTANT AND HEAT RESISTANT AND SHOCK RESISTANT AND SUBMERSIBLE AND VIBRATION RESISTANT AND WATERTIGHT
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Meter Depth Behind Mounting Flange1.660 INCHES MAXIMUM IN
Movement TypeMOVING COIL, PERMANENT MAGNET
Measurement Range+100.0 TO 300.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Mounting Stud Length0.500 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Frequency Response Range+50.000 TO 60.000 HERTZ
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Indicator TypeDIAL W/POINTER
Scale Division Quantity40 SINGLE INDICATOR SINGLE RANGE
Features ProvidedLUMINOUS SCALE MARKING AND MAGNETIC SHIELD AND ZERO ADJUSTER
Overall Diameter3.510 INCHES MAXIMUM IN
Furnished Items and QuantityMTG HDW 3; TERMINAL HDW 2
Installation DesignPANEL
Power SourceEXTERNAL
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
ColorUNABLE TO DECODE
Special MarkingsDOUBLE WIDTH RED MARKS AT 120,208 AND 240 V V
MaterialSTEEL CORROSION RESISTING
Surface TreatmentENAMEL SEMIGLOSS
Style DesignatorROUND FLUSH MTG
FSC Application DataTEST SET,ELECT. EQUIP.
Nuclear Hardness Critical FeatureNONHARDENED
Test Data Document81349-MIL-M-10304/26 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Circuit Attachment Method and Quantity2 SOLDER LUG AND 2 THREADED STUD
Circuit Current for Which DesignedAC
Meter Body Diameter Behind Mounting Flange2.800 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeDZ
Weight0.7187 lbs
Cube0.0470 cu ft
Verified Substitutes 11
2840-00-121-9172725008 INTERCHANGEABLE
Disk,compressor,aircraft Gas Tur
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
6625-00-133-7673A265-1100 INTERCHANGEABLE
Ammeter
Essex Electro Engineers Inc
6625-00-489-64091003149 INTERCHANGEABLE
Voltmeter
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
6625-00-840-6504366-205 INTERCHANGEABLE
Voltmeter
Jewell Instruments Llc
6625-00-844-415259B0130 INTERCHANGEABLE
Voltmeter
William Spencer
5365-00-925-0449 INTERCHANGEABLE
Shim
6625-00-948-016277C707996P001 INTERCHANGEABLE
Voltmeter
Lockheed Martin Corporation Div Rms
4820-01-026-6513Y008556501 INTERCHANGEABLE
Actuator,pneumatic
Leslie Controls, Inc. Dba Leslie Controls Inc
5660-01-038-1458 INTERCHANGEABLE
Rail End
6675-01-041-45731218 INTERCHANGEABLE
Template,drafting
Gerlock Harry W
Cross-Reference Index
Part NumberManufacturer
631-18047 PRIMARY Phaostron Instrument and Electronic Company (USA)
55R-S12524 Simpson Electric Company, Inc. (USA)
302-0763 Cummins Power Generation Inc. (USA)
363-020 Jewell Instruments Llc (USA)
36.1884 Ideal Precision Meter Co Dba Ideal Precision Meter Co (USA)
6625010386826 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
72-5008 Valcore Manufacturing Llc (USA)
55R-S10584 Simpson Electric Company, Inc. (USA)
72-5008 Department of Defense Project Manager-Mobile Electric Power (USA)
55R Simpson Electric Company, Inc. (USA)
6625000386826 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
Related Parts
2840-00-121-9172INTERCHANGEABLE
DISK,COMPRESSOR,AIRCRAFT GAS TUR
725008
6625-00-133-7673INTERCHANGEABLE
AMMETER
A265-1100
6625-00-489-6409INTERCHANGEABLE
VOLTMETER
1003149
6625-00-840-6504INTERCHANGEABLE
VOLTMETER
366-205
6625-00-844-4152INTERCHANGEABLE
VOLTMETER
59B0130
5365-00-925-0449INTERCHANGEABLE
SHIM
6625-00-948-0162INTERCHANGEABLE
VOLTMETER
77C707996P001
4820-01-026-6513INTERCHANGEABLE
ACTUATOR,PNEUMATIC
Y008556501
5660-01-038-1458INTERCHANGEABLE
RAIL END
6675-01-041-4573INTERCHANGEABLE
TEMPLATE,DRAFTING
1218
6240-01-061-7359INTERCHANGEABLE
LAMP,INCANDESCENT
55R

Frequently Asked Questions

What is NSN 6625-01-038-6826?

NSN 6625-01-038-6826 is a Voltmeter, manufactured by Phaostron Instrument and Electronic Company, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-038-6826?

NSN 6625-01-038-6826 has 11 cross-referenced part numbers: 631-18047 (Phaostron Instrument and Electronic Company), 55R-S12524 (Simpson Electric Company, Inc.), 302-0763 (Cummins Power Generation Inc.), 363-020 (Jewell Instruments Llc), 36.1884 (Ideal Precision Meter Co Dba Ideal Precision Meter Co) and 6 more.

What NSN replaces 6625-01-038-6826?

There are 11 known substitutes for 6625-01-038-6826: 2840-00-121-9172, 6625-00-133-7673, 6625-00-489-6409 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 631-18047?

Key specifications for 631-18047: Accuracy in Percent: -3.0 TO 3.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE; Environmental Protection: COLD RESISTANT AND HEAT RESISTANT AND SHOCK RESISTANT AND SUBMERSIBLE AND VIBRATION RESISTANT AND WATERTIGHT; Mounting Bolt Circle Diameter: 3.160 INCHES NOMINAL IN; Meter Depth Behind Mounting Flange: 1.660 INCHES MAXIMUM IN. 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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