PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

49Voltmeter

American Gage and Machine Co · NSN 6625-00-987-5591 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-987-5591 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-987-5591. Primary manufacturer part number: 49.
Features
  • Voltmeter — FSC 6625
  • Indicator Type: DIAL W/POINTER
  • Mounting Facility Type and Quantity: 4 THREADED STUD(S)
  • Nuclear Hardness Critical Feature: NONHARDENED
  • Measurement Range: +0.0 TO 100.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
  • Scale Graduation Type: LINEAR SINGLE INDICATOR SINGLE RANGE
  • Material: PLASTIC
  • Color: UNABLE TO DECODE
Applications
  • Applications requiring Plastic construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-987-5591, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is American Gage and Machine Co. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-987-5591
Primary Part Number49
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerAmerican Gage and Machine Co
StatusACTIVE
Indicator TypeDIAL W/POINTER
Mounting Facility Type and Quantity4 THREADED STUD(S)
Nuclear Hardness Critical FeatureNONHARDENED
Measurement Range+0.0 TO 100.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
MaterialPLASTIC
ColorUNABLE TO DECODE
Movement Suspension MethodJEWEL PIVOT BASE
Mounting Stud Length0.650 INCHES NOMINAL IN
Style DesignatorRECTANGULAR FLUSH MTG
Circuit Attachment Method and Quantity2 THREADED STUD
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Frequency Response Range+25.000 TO 125.000 HERTZ
FSC Application DataTEST SET,ELECTRONIC EQUIPMENT
Movement TypeMOVING COIL, PERMANENT MAGNET
Features ProvidedZERO ADJUSTER
Meter Body Diameter Behind Mounting Flange2.750 INCHES NOMINAL IN
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Scale Division Quantity50 SINGLE INDICATOR SINGLE RANGE
Sensitivity Rating2000.0 OHMS PER VOLT
Mounting Stud Diameter0.138 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Meter Depth Behind Mounting Flange2.360 INCHES NOMINAL IN
Circuit Current for Which DesignedAC
Dielectric Withstanding Voltage in Volts2000.0
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Verified Substitutes 4
Voltmeter
Oscilloscope
6625-00-542-1773 INTERCHANGEABLE
Voltmeter
6625-00-901-557108300 INTERCHANGEABLE
Voltmeter
Simpson Electric Company, Inc.
Cross-Reference Index
Part NumberManufacturer
49 American Gage and Machine Co (USA)
79SPECS08360 Simpson Electric Company, Inc. (USA)
Related Parts
6625-00-124-8851SUCCESSOR
VOLTMETER
6625-00-539-9280SUCCESSOR
OSCILLOSCOPE
6625-00-542-1773INTERCHANGEABLE
VOLTMETER
6625-00-901-5571INTERCHANGEABLE
VOLTMETER
08300

Frequently Asked Questions

What is NSN 6625-00-987-5591?

NSN 6625-00-987-5591 is a Voltmeter, manufactured by American Gage and Machine Co, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-987-5591?

NSN 6625-00-987-5591 has 2 cross-referenced part numbers: 49 (American Gage and Machine Co), 79SPECS08360 (Simpson Electric Company, Inc.).

What NSN replaces 6625-00-987-5591?

There are 4 known substitutes for 6625-00-987-5591: 6625-00-124-8851, 6625-00-539-9280, 6625-00-542-1773 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 49?

Key specifications for 49: Indicator Type: DIAL W/POINTER; Mounting Facility Type and Quantity: 4 THREADED STUD(S); Nuclear Hardness Critical Feature: NONHARDENED; Measurement Range: +0.0 TO 100.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE. 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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