PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MR39W450AFHVoltmeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-957-0234 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-957-0234 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-957-0234. Primary manufacturer part number: MR39W450AFH.
Features
  • Voltmeter — FSC 6625
  • Overall Diameter: 3.510 INCHES NOMINAL IN
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Frequency Response Range: +390.000 TO 410.000 HERTZ
  • Mounting Facility Type and Quantity: 3 THREADED STUD(S)
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
  • Meter Body Diameter Behind Mounting Flange: 2.860 INCHES NOMINAL IN
  • Accuracy in Percent: -1.0 TO 1.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-957-0234, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN6625-00-957-0234
Primary Part NumberMR39W450AFH
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Overall Diameter3.510 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Frequency Response Range+390.000 TO 410.000 HERTZ
Mounting Facility Type and Quantity3 THREADED STUD(S)
Circuit Attachment Method and Quantity2 THREADED STUD
Meter Body Diameter Behind Mounting Flange2.860 INCHES NOMINAL IN
Accuracy in Percent-1.0 TO 1.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
ColorUNABLE TO DECODE
Meter Depth Behind Mounting Flange7.250 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Circuit Current for Which DesignedAC
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Installation DesignPANEL
Mounting Bolt Circle Diameter3.220 INCHES NOMINAL IN
Measurement Range+430.0 TO 470.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Overall Diameter3.510 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Frequency Response Range+390.000 TO 410.000 HERTZ
Mounting Facility Type and Quantity3 THREADED STUD(S)
Circuit Attachment Method and Quantity2 THREADED STUD
Meter Body Diameter Behind Mounting Flange2.860 INCHES NOMINAL IN
Accuracy in Percent-1.0 TO 1.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
ColorUNABLE TO DECODE
Meter Depth Behind Mounting Flange7.250 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Circuit Current for Which DesignedAC
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Installation DesignPANEL
Mounting Bolt Circle Diameter3.220 INCHES NOMINAL IN
Measurement Range+430.0 TO 470.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Weight0.8200 lbs
Cube0.0911 cu ft
Verified Substitutes 6
6625-00-243-4341 INTERCHANGEABLE
Voltmeter
6625-00-771-7209 INTERCHANGEABLE
Voltmeter
6625-00-889-1745 INTERCHANGEABLE
Voltmeter
6625-01-126-5410 INTERCHANGEABLE
Voltmeter
6625-01-177-2794 INTERCHANGEABLE
Voltmeter
6625-01-210-9163 INTERCHANGEABLE
Voltmeter
Cross-Reference Index
Part NumberManufacturer
MR39W450AFH Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-V-23151 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6625-00-243-4341INTERCHANGEABLE
VOLTMETER
6625-00-771-7209INTERCHANGEABLE
VOLTMETER
6625-00-889-1745INTERCHANGEABLE
VOLTMETER
6625-01-126-5410INTERCHANGEABLE
VOLTMETER
6625-01-177-2794INTERCHANGEABLE
VOLTMETER
6625-01-210-9163INTERCHANGEABLE
VOLTMETER

Frequently Asked Questions

What is NSN 6625-00-957-0234?

NSN 6625-00-957-0234 is a Voltmeter, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-957-0234?

NSN 6625-00-957-0234 has 2 cross-referenced part numbers: MR39W450AFH (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-V-23151 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-957-0234?

There are 6 known substitutes for 6625-00-957-0234: 6625-00-243-4341, 6625-00-771-7209, 6625-00-889-1745 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MR39W450AFH?

Key specifications for MR39W450AFH: Overall Diameter: 3.510 INCHES NOMINAL IN; Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE; Frequency Response Range: +390.000 TO 410.000 HERTZ; Mounting Facility Type and Quantity: 3 THREADED STUD(S). 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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