PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MR26W300AFAARAmmeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-005-1177 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-005-1177 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-005-1177. Primary manufacturer part number: MR26W300AFAAR.
Features
  • Ammeter — FSC 6625
  • Mounting Hole Diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
  • Dielectric Withstanding Voltage in Volts: 3000.0
  • Movement Suspension Method: JEWEL PIVOT BASE
  • Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S)
  • Features Provided: ZERO ADJUSTER
  • Measurement Range: +0.0 TO 300.0 AMPERES, AC SINGLE INDICATOR SINGLE RANGE
  • Circuit Attachment Method and Quantity: 2 SOLDERLESS LUG
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-005-1177, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-005-1177
Primary Part NumberMR26W300AFAAR
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
StatusACTIVE
Mounting Hole Diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Dielectric Withstanding Voltage in Volts3000.0
Movement Suspension MethodJEWEL PIVOT BASE
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Features ProvidedZERO ADJUSTER
Measurement Range+0.0 TO 300.0 AMPERES, AC SINGLE INDICATOR SINGLE RANGE
Circuit Attachment Method and Quantity2 SOLDERLESS LUG
Style DesignatorROUND FLUSH MTG
Overall Diameter2.695 INCHES MAXIMUM IN
Surface TreatmentENAMEL
Furnished Items and QuantityTRANSFORMER 1
Circuit Current for Which DesignedAC
Meter Body Diameter Behind Mounting Flange2.210 INCHES MAXIMUM IN
Movement TypeMOVING IRON VANE
ColorUNABLE TO DECODE
Scale Division Quantity30 SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.600 INCHES MAXIMUM IN
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Frequency Response Range+360.000 TO 440.000 HERTZ
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Mounting Hole Diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Dielectric Withstanding Voltage in Volts3000.0
Movement Suspension MethodJEWEL PIVOT BASE
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
Ammeter
Ammeter
Ammeter
Ammeter
Ammeter
Ammeter
Ammeter
6625-00-684-812162207-001 SUCCESSOR
Ammeter
Dynalec Corporation
Ammeter
Ammeter
Cross-Reference Index
Part NumberManufacturer
MR26W300AFAAR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILM10304 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6625-00-069-3031SUCCESSOR
AMMETER
6625-00-535-4594SUCCESSOR
AMMETER
6625-00-555-3092SUCCESSOR
AMMETER
6625-00-643-3502SUCCESSOR
AMMETER
6625-00-648-7562SUCCESSOR
AMMETER
6625-00-668-7813SUCCESSOR
AMMETER
6625-00-683-9592SUCCESSOR
AMMETER
6625-00-684-8121SUCCESSOR
AMMETER
62207-001
6625-00-720-3253SUCCESSOR
AMMETER
6625-00-720-3254SUCCESSOR
AMMETER
6625-00-730-7278SUCCESSOR
VOLTMETER
6625-00-818-9090SUCCESSOR
VOLTMETER

Frequently Asked Questions

What is NSN 6625-00-005-1177?

NSN 6625-00-005-1177 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: active.

What are the part numbers for NSN 6625-00-005-1177?

NSN 6625-00-005-1177 has 2 cross-referenced part numbers: MR26W300AFAAR (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILM10304 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-005-1177?

There are 12 known substitutes for 6625-00-005-1177: 6625-00-069-3031, 6625-00-535-4594, 6625-00-555-3092 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MR26W300AFAAR?

Key specifications for MR26W300AFAAR: Mounting Hole Diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Dielectric Withstanding Voltage in Volts: 3000.0; Movement Suspension Method: JEWEL PIVOT BASE; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S). 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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