PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILM6AAmmeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-190-4171 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-190-4171 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-190-4171. Primary manufacturer part number: MILM6A.
Features
  • Ammeter — FSC 6625
  • Features Provided: ZERO ADJUSTER
  • Measurement Range: +0.0 TO 100.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE
  • Overall Diameter: 2.695 INCHES NOMINAL IN
  • Sensitivity Rating: 100.0 MILLIAMPERES
  • Mounting Facility Type and Quantity: 3 FLANGE
  • Mounting Bolt Circle Diameter: 2.440 INCHES NOMINAL IN
  • Dielectric Withstanding Voltage in Volts: 3000.0
Applications
  • Applications requiring Steel construction
General Description

The Ammeter, cataloged under National Stock Number 6625-00-190-4171, 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 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6625-00-190-4171
Primary Part NumberMILM6A
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Features ProvidedZERO ADJUSTER
Measurement Range+0.0 TO 100.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Overall Diameter2.695 INCHES NOMINAL IN
Sensitivity Rating100.0 MILLIAMPERES
Mounting Facility Type and Quantity3 FLANGE
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Dielectric Withstanding Voltage in Volts3000.0
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Meter Body Diameter Behind Mounting Flange2.220 INCHES NOMINAL IN
Movement TypeMOVING COIL, PERMANENT MAGNET
Installation DesignPANEL
Circuit Current for Which DesignedDC
ColorUNABLE TO DECODE
Style DesignatorROUND FLUSH MTG
Movement Suspension MethodJEWEL PIVOT BASE
MaterialSTEEL
Circuit Attachment Method and Quantity2 THREADED STUD
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.600 INCHES NOMINAL IN
Features ProvidedZERO ADJUSTER
Measurement Range+0.0 TO 100.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Overall Diameter2.695 INCHES NOMINAL IN
Sensitivity Rating100.0 MILLIAMPERES
Mounting Facility Type and Quantity3 FLANGE
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Dielectric Withstanding Voltage in Volts3000.0
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
No Item Name Available
6625-00-144-0165 INTERCHANGEABLE
Ammeter
6625-00-144-0409 INTERCHANGEABLE
Ammeter
6625-00-196-4334 INTERCHANGEABLE
Voltmeter
6625-00-647-3663 INTERCHANGEABLE
Voltmeter
6625-00-649-0989 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
MR26W100DCMA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6625-00-635-4242SUCCESSOR
NO ITEM NAME AVAILABLE
6625-00-144-0165INTERCHANGEABLE
AMMETER
6625-00-144-0409INTERCHANGEABLE
AMMETER
6625-00-196-4334INTERCHANGEABLE
VOLTMETER
6625-00-647-3663INTERCHANGEABLE
VOLTMETER
6625-00-649-0989INTERCHANGEABLE
VOLTMETER
6625-00-649-1632INTERCHANGEABLE
AMMETER
6625-00-649-3277INTERCHANGEABLE
AMMETER
720691-25
6625-00-649-4854INTERCHANGEABLE
AMMETER

Frequently Asked Questions

What is NSN 6625-00-190-4171?

NSN 6625-00-190-4171 is a Ammeter, 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 6625-00-190-4171?

NSN 6625-00-190-4171 has 2 cross-referenced part numbers: MILM6A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MR26W100DCMA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-190-4171?

There are 9 known substitutes for 6625-00-190-4171: 6625-00-635-4242, 6625-00-144-0165, 6625-00-144-0409 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILM6A?

Key specifications for MILM6A: Features Provided: ZERO ADJUSTER; Measurement Range: +0.0 TO 100.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE; Overall Diameter: 2.695 INCHES NOMINAL IN; Sensitivity Rating: 100.0 MILLIAMPERES. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-190-4171 still in active supply?

NSN 6625-00-190-4171 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