PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MR49W800DCAAHAmmeter

Westinghouse Electric Corp Control Business Unit · NSN 6625-00-196-8778 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-196-8778 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-196-8778. Primary manufacturer part number: MR49W800DCAAH.
Features
  • Ammeter — FSC 6625
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
  • Mounting Stud Diameter: 0.250 INCHES NOMINAL IN
  • Pointer Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Movement Suspension Method: JEWEL PIVOT BASE
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Installation Design: PANEL
  • Mounting Facility Type and Quantity: 4 THREADED STUD(S)
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-196-8778, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Westinghouse Electric Corp Control Business Unit. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-196-8778
Primary Part NumberMR49W800DCAAH
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerWestinghouse Electric Corp Control Business Unit
StatusACTIVE
Circuit Attachment Method and Quantity2 THREADED STUD
Mounting Stud Diameter0.250 INCHES NOMINAL IN
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Movement Suspension MethodJEWEL PIVOT BASE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Mounting Facility Type and Quantity4 THREADED STUD(S)
Sensitivity Rating50.0 MILLIVOLTS
Indicator TypeDIAL W/POINTER
Center to Center Distance Between Mounting Facilities Parallel to Width3.376 INCHES MINIMUM AND 3.406 INCHES MAXIMUM IN
Environmental ProtectionDUST RESISTANT AND HUMIDITY RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT
Nuclear Hardness Critical FeatureNONHARDENED
ColorUNABLE TO DECODE
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Circuit Current for Which DesignedDC
Measurement Range+0.0 TO 800.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-1.5 TO 1.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
FSC Application DataTEST SET,ELECT. EQUIP.
Specification/standard Data81349-MIL-M-16034/2 GOVERNMENT SPECIFICATION
Circuit Construction TypeNONELECTRONIC
Movement TypeMOVING COIL, PERMANENT MAGNET
Panel for Which DesignedMAGNETIC OR NONMAGNETIC
Meter Depth Behind Mounting Flange9.000 INCHES MAXIMUM IN
Center to Center Distance Between Mounting Facilities Parallel to Length3.376 INCHES MINIMUM AND 3.406 INCHES MAXIMUM IN
Special Test FeaturesENVIRONMENTALS PER MIL-STD-202
Test Data Document81349-MIL-M-16034 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.).
Style DesignatorRECTANGULAR FLUSH MTG
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-553-7461 (3244767 PC 34)
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeZ
Weight3.6000 lbs
Cube0.5017 cu ft
Verified Substitutes 2
6625-00-553-74613244767 PC 34 SUCCESSOR
Meter,arbitrary Scale
Naval Ship Systems Command
Ammeter
Cross-Reference Index
Part NumberManufacturer
MR49W800DCAAH Westinghouse Electric Corp Control Business Unit
211090431 Naval Sea Systems Command (USA)
MIL-DTL-16034/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
671B420A34 Hughes Corp Div Dba Weschler Instruments (USA)
H651-6104-019 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
MR49W800DCAAH Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MR49W800DCAAH General Electric Co Outdoor Breaker Business Section (USA)
MIL-M-16034/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
564-6985643-019 Naval Sea Systems Command (USA)
Related Parts
SUCCESSOR 6625-00-553-7461 Meter,arbitrary Scale · 3244767 PC 34
6625-01-205-3107SUCCESSOR
AMMETER

Frequently Asked Questions

What is NSN 6625-00-196-8778?

NSN 6625-00-196-8778 is a Ammeter, manufactured by Westinghouse Electric Corp Control Business Unit, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-196-8778?

NSN 6625-00-196-8778 has 9 cross-referenced part numbers: MR49W800DCAAH (Westinghouse Electric Corp Control Business Unit), 211090431 (Naval Sea Systems Command), MIL-DTL-16034/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 671B420A34 (Hughes Corp Div Dba Weschler Instruments), H651-6104-019 (Electric Boat Corporation Div General Dynamics Electric Boat) and 4 more.

What NSN replaces 6625-00-196-8778?

There are 2 known substitutes for 6625-00-196-8778: 6625-00-553-7461, 6625-01-205-3107. Verify interchangeability with system specifications before substitution.

What are the specifications of MR49W800DCAAH?

Key specifications for MR49W800DCAAH: Special Features: RUGGEDIZED; Circuit Attachment Method and Quantity: 2 THREADED STUD; Mounting Stud Diameter: 0.250 INCHES NOMINAL IN; Pointer Color: BLACK SINGLE INDICATOR SINGLE RANGE. 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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