PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1227-02440Ammeter

Simpson Electric Company, Inc. · NSN 6625-01-203-3378 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-203-3378 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-203-3378. Primary manufacturer part number: 1227-02440.
Features
  • Ammeter — FSC 6625
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.880 INCHES NOMINAL IN
  • Indicator Type: DIAL W/POINTER
  • Meter Body Diameter Behind Mounting Flange: 2.170 INCHES NOMINAL IN
  • Mounting Stud Length: 0.540 INCHES NOMINAL IN
  • Scale Division Quantity: 50 SINGLE INDICATOR SINGLE RANGE
  • Installation Design: PANEL
  • Mounting Arrangement Style: FOUR HOLE/STUD RECTANGULAR/SQUARE
Applications
  • Applications requiring Plastic construction
General Description

The Ammeter, cataloged under National Stock Number 6625-01-203-3378, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Simpson Electric Company, Inc.. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6625-01-203-3378
Primary Part Number1227-02440
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerSimpson Electric Company, Inc.
StatusCANCELLED
Center to Center Distance Between Mounting Facilities Parallel to Width1.880 INCHES NOMINAL IN
Indicator TypeDIAL W/POINTER
Meter Body Diameter Behind Mounting Flange2.170 INCHES NOMINAL IN
Mounting Stud Length0.540 INCHES NOMINAL IN
Scale Division Quantity50 SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Meter Depth Behind Mounting Flange1.060 INCHES NOMINAL IN
Panel for Which DesignedMAGNETIC OR NONMAGNETIC
Mounting Facility Type and Quantity4 THREADED STUD(S)
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Power SourceEXTERNAL
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Movement Suspension MethodJEWEL PIVOT BASE
MaterialPLASTIC
Mounting Stud Diameter0.112 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Features ProvidedMAGNETIC SHIELD AND ZERO ADJUSTER
Circuit Construction TypeNONELECTRONIC
Circuit Attachment Method and Quantity2 THREADED STUD
Nuclear Hardness Critical FeatureNONHARDENED
Measurement Range+0.0 TO 1.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Style DesignatorRECTANGULAR FLUSH MTG
FSC Application DataTEST SET,ELECT. EQUIP.
Reliability IndicatorNOT ESTABLISHED
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedDC
Center to Center Distance Between Mounting Facilities Parallel to Length1.880 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Weight4.1000 lbs
Cube0.0302 cu ft
Verified Substitutes 12
No Item Name Available
6625-00-052-15184017626-0702 SUCCESSOR
Ammeter
Raytheon Company Dba Raytheon Co
Ammeter
6625-01-030-527504320 SUCCESSOR
Ammeter
Simpson Electric Company, Inc.
6625-00-464-2133224743-001 INTERCHANGEABLE
Voltmeter
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
6625-00-465-6952216TE0239-1 INTERCHANGEABLE
Voltmeter
Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division
6625-00-476-1864181001P13 INTERCHANGEABLE
Ammeter
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
6625-00-808-872804350 INTERCHANGEABLE
Ammeter
Simpson Electric Company, Inc.
6625-00-823-532572P231601-1 INTERCHANGEABLE
Ammeter
Herley Chicago Dba Stewart Warner Electronics
6625-00-840-0367990C776H12 INTERCHANGEABLE
Ammeter
Northrop Grumman Systems Corporation Dba Electronic Systems
Cross-Reference Index
Part NumberManufacturer
1227-02440 Simpson Electric Company, Inc. (USA)
535009-1 Raytheon Company Dba Raytheon (USA)
02440 Simpson Electric Company, Inc. (USA)
1227 Simpson Electric Company, Inc. (USA)
Related Parts
6625-00-856-5174SUCCESSOR
NO ITEM NAME AVAILABLE
6625-00-052-1518SUCCESSOR
AMMETER
4017626-0702
6625-00-412-4816SUCCESSOR
AMMETER
6625-01-030-5275SUCCESSOR
AMMETER
04320
6625-00-464-2133INTERCHANGEABLE
VOLTMETER
224743-001
6625-00-465-6952INTERCHANGEABLE
VOLTMETER
216TE0239-1
6625-00-476-1864INTERCHANGEABLE
AMMETER
181001P13
6625-00-808-8728INTERCHANGEABLE
AMMETER
04350
6625-00-823-5325INTERCHANGEABLE
AMMETER
72P231601-1
6625-00-840-0367INTERCHANGEABLE
AMMETER
990C776H12
6625-01-233-8499INTERCHANGEABLE
AMMETER
S12315
6625-01-260-0679INTERCHANGEABLE
AMMETER
02530

Frequently Asked Questions

What is NSN 6625-01-203-3378?

NSN 6625-01-203-3378 is a Ammeter, manufactured by Simpson Electric Company, Inc., classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-01-203-3378?

NSN 6625-01-203-3378 has 4 cross-referenced part numbers: 1227-02440 (Simpson Electric Company, Inc.), 535009-1 (Raytheon Company Dba Raytheon), 02440 (Simpson Electric Company, Inc.), 1227 (Simpson Electric Company, Inc.).

What NSN replaces 6625-01-203-3378?

There are 12 known substitutes for 6625-01-203-3378: 6625-00-856-5174, 6625-00-052-1518, 6625-00-412-4816 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1227-02440?

Key specifications for 1227-02440: Center to Center Distance Between Mounting Facilities Parallel to Width: 1.880 INCHES NOMINAL IN; Indicator Type: DIAL W/POINTER; Meter Body Diameter Behind Mounting Flange: 2.170 INCHES NOMINAL IN; Mounting Stud Length: 0.540 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-01-203-3378 still in active supply?

NSN 6625-01-203-3378 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.
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