PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MR26W250AFVVRVoltmeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-580-4748 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-580-4748 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-580-4748. Primary manufacturer part number: MR26W250AFVVR.
Features
  • Voltmeter — FSC 6625
  • Meter Depth Behind Mounting Flange: 1.600 INCHES NOMINAL IN
  • Mounting Hole Diameter: 0.125 INCHES NOMINAL IN
  • Color: UNABLE TO DECODE
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
  • Movement Type: MOVING COIL, PERMANENT MAGNET
  • Meter Body Diameter Behind Mounting Flange: 2.210 INCHES NOMINAL IN
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-580-4748, 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 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-580-4748
Primary Part NumberMR26W250AFVVR
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
Meter Depth Behind Mounting Flange1.600 INCHES NOMINAL IN
Mounting Hole Diameter0.125 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Movement TypeMOVING COIL, PERMANENT MAGNET
Meter Body Diameter Behind Mounting Flange2.210 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Style DesignatorROUND SEMI-FLUSH MTG
Measurement Range+0.0 TO 250.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Circuit Attachment Method and Quantity2 BINDING POST
Overall Diameter2.695 INCHES NOMINAL IN
Installation DesignPANEL
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Circuit Current for Which DesignedAC
Test Data Document81349-MIL-M-10304 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.).
Mounting Bolt Circle Diameter1.220 INCHES NOMINAL IN
Movement Suspension MethodJEWEL PIVOT BASE
Meter Depth Behind Mounting Flange1.600 INCHES NOMINAL IN
Mounting Hole Diameter0.125 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Movement TypeMOVING COIL, PERMANENT MAGNET
Meter Body Diameter Behind Mounting Flange2.210 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Style DesignatorROUND SEMI-FLUSH MTG
Measurement Range+0.0 TO 250.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Circuit Attachment Method and Quantity2 BINDING POST
Overall Diameter2.695 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-555-3094
HAZMATNo
Verified Substitutes 3
Voltmeter
Ammeter
Voltmeter
Cross-Reference Index
Part NumberManufacturer
MR26W250AFVVR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-M-10304/6 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-10304/6 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 6625-00-555-3094 Voltmeter
6625-00-585-9956SUCCESSOR
AMMETER
6625-01-099-3791SUCCESSOR
VOLTMETER

Frequently Asked Questions

What is NSN 6625-00-580-4748?

NSN 6625-00-580-4748 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 6625-00-580-4748?

NSN 6625-00-580-4748 has 3 cross-referenced part numbers: MR26W250AFVVR (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-M-10304/6 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-10304/6 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-580-4748?

There are 3 known substitutes for 6625-00-580-4748: 6625-00-555-3094, 6625-00-585-9956, 6625-01-099-3791. Verify interchangeability with system specifications before substitution.

What are the specifications of MR26W250AFVVR?

Key specifications for MR26W250AFVVR: Meter Depth Behind Mounting Flange: 1.600 INCHES NOMINAL IN; Mounting Hole Diameter: 0.125 INCHES NOMINAL IN; Color: UNABLE TO DECODE; Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES. 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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