PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MR34W300DCVVRVoltmeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-228-8923 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-228-8923 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-228-8923. Primary manufacturer part number: MR34W300DCVVR.
Features
  • Voltmeter — FSC 6625
  • Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE
  • Measurement Range: +0.0 TO 300.0 VOLTS, DC SINGLE INDICATOR SINGLE RANGE
  • Installation Design: PANEL
  • Circuit Current for Which Designed: DC
  • Color: UNABLE TO DECODE
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
  • Overall Diameter: 3.500 INCHES NOMINAL IN
Applications
  • Applications requiring Plastic construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-228-8923, 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 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN6625-00-228-8923
Primary Part NumberMR34W300DCVVR
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
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Measurement Range+0.0 TO 300.0 VOLTS, DC SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Circuit Current for Which DesignedDC
ColorUNABLE TO DECODE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Overall Diameter3.500 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
MaterialPLASTIC
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Meter Depth Behind Mounting Flange1.660 INCHES NOMINAL IN
Meter Body Diameter Behind Mounting Flange2.800 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Measurement Range+0.0 TO 300.0 VOLTS, DC SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Circuit Current for Which DesignedDC
ColorUNABLE TO DECODE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Overall Diameter3.500 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
MaterialPLASTIC
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Meter Depth Behind Mounting Flange1.660 INCHES NOMINAL IN
Meter Body Diameter Behind Mounting Flange2.800 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeXN
Verified Substitutes 6
6625-00-193-7164 INTERCHANGEABLE
Voltmeter
6625-00-196-8943 INTERCHANGEABLE
Voltmeter
6625-00-235-7346 INTERCHANGEABLE
Ammeter
6625-00-643-1525 INTERCHANGEABLE
Voltmeter
6625-01-087-8221 INTERCHANGEABLE
Voltmeter
6625-01-303-4890 INTERCHANGEABLE
Voltmeter
Cross-Reference Index
Part NumberManufacturer
MR34W300DCVVR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-10304/22 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MR34W300DCVV Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6625-00-193-7164INTERCHANGEABLE
VOLTMETER
6625-00-196-8943INTERCHANGEABLE
VOLTMETER
6625-00-235-7346INTERCHANGEABLE
AMMETER
6625-00-643-1525INTERCHANGEABLE
VOLTMETER
6625-01-087-8221INTERCHANGEABLE
VOLTMETER
6625-01-303-4890INTERCHANGEABLE
VOLTMETER

Frequently Asked Questions

What is NSN 6625-00-228-8923?

NSN 6625-00-228-8923 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 6625-00-228-8923?

NSN 6625-00-228-8923 has 3 cross-referenced part numbers: MR34W300DCVVR (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-10304/22 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MR34W300DCVV (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-228-8923?

There are 6 known substitutes for 6625-00-228-8923: 6625-00-193-7164, 6625-00-196-8943, 6625-00-235-7346 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MR34W300DCVVR?

Key specifications for MR34W300DCVVR: Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE; Measurement Range: +0.0 TO 300.0 VOLTS, DC SINGLE INDICATOR SINGLE RANGE; Installation Design: PANEL; Circuit Current for Which Designed: DC. 28 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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