PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILM6AVoltmeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-649-0989 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-649-0989 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-649-0989. Primary manufacturer part number: MILM6A.
Features
  • Voltmeter — FSC 6625
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Color: UNABLE TO DECODE
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Meter Depth Behind Mounting Flange: 2.010 INCHES NOMINAL IN
  • Material: PLASTIC
  • Meter Body Diameter Behind Mounting Flange: 2.800 INCHES NOMINAL IN
  • Style Designator: ROUND FLUSH MTG
Applications
  • Applications requiring Plastic construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-649-0989, 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 27 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-649-0989
Primary Part NumberMILM6A
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
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
ColorUNABLE TO DECODE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange2.010 INCHES NOMINAL IN
MaterialPLASTIC
Meter Body Diameter Behind Mounting Flange2.800 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Movement TypeMOVING COIL, PERMANENT MAGNET
Measurement Range+0.0 TO 200.0 VOLTS, DC SINGLE INDICATOR SINGLE RANGE
Overall Diameter3.500 INCHES NOMINAL IN
Installation DesignPANEL
Mounting Facility Type and Quantity1 FLANGE
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Circuit Attachment Method and Quantity2 BINDING POST
Circuit Current for Which DesignedDC
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
ColorUNABLE TO DECODE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange2.010 INCHES NOMINAL IN
MaterialPLASTIC
Meter Body Diameter Behind Mounting Flange2.800 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Movement TypeMOVING COIL, PERMANENT MAGNET
Measurement Range+0.0 TO 200.0 VOLTS, DC SINGLE INDICATOR SINGLE RANGE
Overall Diameter3.500 INCHES NOMINAL IN
Installation DesignPANEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6625-00-144-0165 INTERCHANGEABLE
Ammeter
6625-00-144-0409 INTERCHANGEABLE
Ammeter
6625-00-190-4171 INTERCHANGEABLE
Ammeter
6625-00-196-4334 INTERCHANGEABLE
Voltmeter
6625-00-647-3663 INTERCHANGEABLE
Voltmeter
6625-00-649-1632 INTERCHANGEABLE
Ammeter
6625-00-649-3277720691-25 INTERCHANGEABLE
Ammeter
Lockheed Martin Corporation Div Rms - Mitchel Field
6625-00-649-4854 INTERCHANGEABLE
Ammeter
Cross-Reference Index
Part NumberManufacturer
MILM6A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MR36W200DCVV Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6625-00-144-0165INTERCHANGEABLE
AMMETER
6625-00-144-0409INTERCHANGEABLE
AMMETER
6625-00-190-4171INTERCHANGEABLE
AMMETER
6625-00-196-4334INTERCHANGEABLE
VOLTMETER
6625-00-647-3663INTERCHANGEABLE
VOLTMETER
6625-00-649-1632INTERCHANGEABLE
AMMETER
6625-00-649-3277INTERCHANGEABLE
AMMETER
720691-25
6625-00-649-4854INTERCHANGEABLE
AMMETER

Frequently Asked Questions

What is NSN 6625-00-649-0989?

NSN 6625-00-649-0989 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 6625-00-649-0989?

NSN 6625-00-649-0989 has 2 cross-referenced part numbers: MILM6A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MR36W200DCVV (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-649-0989?

There are 8 known substitutes for 6625-00-649-0989: 6625-00-144-0165, 6625-00-144-0409, 6625-00-190-4171 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILM6A?

Key specifications for MILM6A: Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE; Color: UNABLE TO DECODE; Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE; Meter Depth Behind Mounting Flange: 2.010 INCHES NOMINAL IN. 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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