PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILM10304C1-4AMR26S0Voltmeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-581-5691 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-581-5691 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-581-5691. Primary manufacturer part number: MILM10304C1-4AMR26S0.
Features
  • Voltmeter — FSC 6625
  • FSC Application Data: TEST SET,ELECT. EQUIP.
  • Meter Depth Behind Mounting Flange: 2.250 INCHES MAXIMUM IN
  • Overall Diameter: 2.695 INCHES MAXIMUM IN
  • Meter Body Diameter Behind Mounting Flange: 2.210 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: MIL-F-14072 MIL SPEC ALL TREATMENT RESPONSES
  • Test Data Document: 81349-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.).
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Applications
  • Applications requiring Steel construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-581-5691, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, 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
NSN6625-00-581-5691
Primary Part NumberMILM10304C1-4AMR26S0
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
FSC Application DataTEST SET,ELECT. EQUIP.
Meter Depth Behind Mounting Flange2.250 INCHES MAXIMUM IN
Overall Diameter2.695 INCHES MAXIMUM IN
Meter Body Diameter Behind Mounting Flange2.210 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationMIL-F-14072 MIL SPEC ALL TREATMENT RESPONSES
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.).
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Dial Scale Marking ColorGREEN, PHOSPHORESCENT SINGLE INDICATOR SINGLE RANGE
Sensitivity Rating1.0 MILLIAMPERES
Specification/standard Data81349-MIL-M-10304/4 GOVERNMENT SPECIFICATION
Indicator TypeDIAL W/POINTER
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Surface TreatmentENAMEL SEMIGLOSS
MaterialSTEEL
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Circuit Attachment Method and Quantity2 SOLDER LUG AND 2 THREADED STUD
Movement TypeMOVING COIL, PERMANENT MAGNET
Furnished Items and QuantityNUT 7; LOCKWASHER 5; SEAL 1
Installation DesignPANEL
Environmental ProtectionCOLD RESISTANT AND HEAT RESISTANT AND SHOCK RESISTANT AND SUBMERSIBLE AND VIBRATION RESISTANT AND WATERTIGHT
Nuclear Hardness Critical FeatureNONHARDENED
ColorUNABLE TO DECODE
Scale Selection MethodTERMINAL
Movement Suspension MethodJEWEL PIVOT BASE
Features ProvidedLUMINOUS SCALE MARKING AND MAGNETIC SHIELD AND SELF-ILLUMINATION FACILITY AND ZERO ADJUSTER
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Dielectric Withstanding Voltage in Volts3000.0
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor6625-00-555-3095
HAZMATYES — Special handling required
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.5550 lbs
Cube0.0221 cu ft
Verified Substitutes 1
Voltmeter
Cross-Reference Index
Part NumberManufacturer
MILM10304C1-4AMR26S0 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-M-10304/4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILM10304B-MR26S020D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MR26P020DCVVR 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
Related Parts
SUCCESSOR 6625-00-555-3095 Voltmeter

Frequently Asked Questions

What is NSN 6625-00-581-5691?

NSN 6625-00-581-5691 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 6625-00-581-5691?

NSN 6625-00-581-5691 has 5 cross-referenced part numbers: MILM10304C1-4AMR26S0 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-M-10304/4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILM10304B-MR26S020D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MR26P020DCVVR (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).

What NSN replaces 6625-00-581-5691?

There is 1 known substitute for 6625-00-581-5691: 6625-00-555-3095. Verify interchangeability with system specifications before substitution.

What are the specifications of MILM10304C1-4AMR26S0?

Key specifications for MILM10304C1-4AMR26S0: FSC Application Data: TEST SET,ELECT. EQUIP.; Meter Depth Behind Mounting Flange: 2.250 INCHES MAXIMUM IN; Overall Diameter: 2.695 INCHES MAXIMUM IN; Meter Body Diameter Behind Mounting Flange: 2.210 INCHES MAXIMUM IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-581-5691 hazardous material?

Yes, NSN 6625-00-581-5691 is classified as hazardous material (HAZMAT). Special handling, storage, and shipping requirements apply per DoD regulations.

Is NSN 6625-00-581-5691 still in active supply?

NSN 6625-00-581-5691 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.
PartsTable Design LLC · partstable.com