PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILM10304B1-1MR26W02Voltmeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-555-2339 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-555-2339 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-555-2339. Primary manufacturer part number: MILM10304B1-1MR26W02.
Features
  • Voltmeter — FSC 6625
  • Power Source: EXTERNAL
  • Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE
  • Material: STEEL
  • Environmental Protection: AIRTIGHT AND DUST RESISTANT AND FUNGUS RESISTANT AND HEAT RESISTANT AND HUMIDITY RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT AND WATER RESISTANT
  • Style Designator: ROUND FLUSH MTG
  • Scale Division Quantity: 60 SINGLE INDICATOR SINGLE RANGE
  • Mounting Bolt Circle Diameter: 2.440 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-555-2339, 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 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-555-2339
Primary Part NumberMILM10304B1-1MR26W02
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
StatusCANCELLED
Power SourceEXTERNAL
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
MaterialSTEEL
Environmental ProtectionAIRTIGHT AND DUST RESISTANT AND FUNGUS RESISTANT AND HEAT RESISTANT AND HUMIDITY RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT AND WATER RESISTANT
Style DesignatorROUND FLUSH MTG
Scale Division Quantity60 SINGLE INDICATOR SINGLE RANGE
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Overall Diameter2.695 INCHES MAXIMUM IN
Mounting Facility Type and Quantity3 SCREW AND 3 UNTHREADED HOLE(S)
Surface TreatmentPAINT
Indicator TypeDIAL W/POINTER
Special Test FeaturesCOMPLIES WITH MIL-M-10304
Meter Body Diameter Behind Mounting Flange2.210 INCHES MAXIMUM IN
Specification/standard Data81349-MIL-M-10304/4 GOVERNMENT SPECIFICATION
Furnished Items and QuantityNUT 7; LOCKWASHER 5; SEAL 1
Installation DesignPANEL
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.600 INCHES MAXIMUM IN
Sensitivity Rating1.0 MILLIAMPERES
Measurement Range+0.0 TO 20.0 KILOVOLTS, DC SINGLE INDICATOR SINGLE RANGE
Movement Suspension MethodJEWEL PIVOT BASE
FSC Application DataTEST SET,ELECT. EQUIP.
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Movement TypeMOVING IRON VANE
Circuit Attachment Method and Quantity2 SOLDER LUG AND 2 THREADED STUD
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Circuit Current for Which DesignedDC
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor6625-00-555-3095
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJZ
Weight0.5550 lbs
Cube0.0402 cu ft
Verified Substitutes 1
Voltmeter
Cross-Reference Index
Part NumberManufacturer
MILM10304B1-1MR26W02 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MR26W020DCKVR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-10304/4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7706647P35 Lockheed Martin Corporation Div Rms (USA)
MIL-M-10304/4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 6625-00-555-3095 Voltmeter

Frequently Asked Questions

What is NSN 6625-00-555-2339?

NSN 6625-00-555-2339 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: cancelled.

What are the part numbers for NSN 6625-00-555-2339?

NSN 6625-00-555-2339 has 5 cross-referenced part numbers: MILM10304B1-1MR26W02 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MR26W020DCKVR (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-10304/4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 7706647P35 (Lockheed Martin Corporation Div Rms), MIL-M-10304/4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-555-2339?

There is 1 known substitute for 6625-00-555-2339: 6625-00-555-3095. Verify interchangeability with system specifications before substitution.

What are the specifications of MILM10304B1-1MR26W02?

Key specifications for MILM10304B1-1MR26W02: Power Source: EXTERNAL; Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE; Material: STEEL; Environmental Protection: AIRTIGHT AND DUST RESISTANT AND FUNGUS RESISTANT AND HEAT RESISTANT AND HUMIDITY RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT AND WATER RESISTANT. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-555-2339 still in active supply?

NSN 6625-00-555-2339 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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