PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20428Ammeter

Raytheon Company Dba Raytheon · NSN 6625-00-519-2047 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-519-2047 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-519-2047. Primary manufacturer part number: 20428.
Features
  • Ammeter — FSC 6625
  • Scale Division Quantity: 20 SINGLE INDICATOR FIRST RANGE
  • Movement Type: MOVING IRON VANE
  • Scale Division Quantity: 30 SINGLE INDICATOR SECOND RANGE
  • Color: UNABLE TO DECODE
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Measurement Range: +0.0 TO 20.0 MILLIAMPERES, DC SINGLE INDICATOR SECOND RANGE
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
Applications
  • Applications requiring Plastic construction
General Description

The Ammeter, cataloged under National Stock Number 6625-00-519-2047, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-519-2047
Primary Part Number20428
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Scale Division Quantity20 SINGLE INDICATOR FIRST RANGE
Movement TypeMOVING IRON VANE
Scale Division Quantity30 SINGLE INDICATOR SECOND RANGE
ColorUNABLE TO DECODE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Measurement Range+0.0 TO 20.0 MILLIAMPERES, DC SINGLE INDICATOR SECOND RANGE
Circuit Attachment Method and Quantity2 THREADED STUD
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Installation DesignPANEL
Overall Diameter2.690 INCHES NOMINAL IN
Mounting Bolt Circle Diameter2.430 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.390 INCHES NOMINAL IN
MaterialPLASTIC
Sensitivity Rating20.0 MILLIVOLTS
Measurement Range+0.0 TO 1.0 MILLIAMPERES, DC SINGLE INDICATOR FIRST RANGE
Circuit Current for Which DesignedDC
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Meter Body Diameter Behind Mounting Flange2.210 INCHES NOMINAL IN
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Scale Division Quantity20 SINGLE INDICATOR FIRST RANGE
Movement TypeMOVING IRON VANE
Scale Division Quantity30 SINGLE INDICATOR SECOND RANGE
ColorUNABLE TO DECODE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Measurement Range+0.0 TO 20.0 MILLIAMPERES, DC SINGLE INDICATOR SECOND RANGE
Circuit Attachment Method and Quantity2 THREADED STUD
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5365-00-276-345920-428 INTERCHANGEABLE
Spacer,sleeve
Dresser Industries Inc Leroi Div
2925-00-497-507510395 INTERCHANGEABLE
Clamp Asy
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
3455-01-047-4288 INTERCHANGEABLE
Reamer,machine
4820-01-119-949720428-1760 INTERCHANGEABLE
Stop,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-143-4377S13126-16PH INTERCHANGEABLE
Ring Set,piston Valve
Trelleborg Sealing Solutions Us, Inc.
4820-01-144-921820428-3320 INTERCHANGEABLE
Piston,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
6515-01-241-4979204.028 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
5130-01-386-0371 INTERCHANGEABLE
Brush,wire,rotary End
6515-01-590-8269118-2-US INTERCHANGEABLE
Head,ophthalmoscope
Welch Allyn, Inc.
Cross-Reference Index
Part NumberManufacturer
20428 PRIMARY Raytheon Company Dba Raytheon (USA)
372B103 General Dynamics Mission Systems, Inc. Dba Gdms (USA)
372B103 Motorola Inc. Dba Integrated Information Systems Group (USA)
Related Parts
5365-00-276-3459INTERCHANGEABLE
SPACER,SLEEVE
20-428
2925-00-497-5075INTERCHANGEABLE
CLAMP ASY
10395
3455-01-047-4288INTERCHANGEABLE
REAMER,MACHINE
4820-01-119-9497INTERCHANGEABLE
STOP,VALVE
20428-1760
4820-01-143-4377INTERCHANGEABLE
RING SET,PISTON VALVE
S13126-16PH
4820-01-144-9218INTERCHANGEABLE
PISTON,VALVE
20428-3320
6515-01-241-4979INTERCHANGEABLE
SCREW,BONE
204.028
5130-01-386-0371INTERCHANGEABLE
BRUSH,WIRE,ROTARY END
6515-01-590-8269INTERCHANGEABLE
HEAD,OPHTHALMOSCOPE
118-2-US

Frequently Asked Questions

What is NSN 6625-00-519-2047?

NSN 6625-00-519-2047 is a Ammeter, manufactured by Raytheon Company Dba Raytheon, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-519-2047?

NSN 6625-00-519-2047 has 3 cross-referenced part numbers: 20428 (Raytheon Company Dba Raytheon), 372B103 (General Dynamics Mission Systems, Inc. Dba Gdms), 372B103 (Motorola Inc. Dba Integrated Information Systems Group).

What NSN replaces 6625-00-519-2047?

There are 9 known substitutes for 6625-00-519-2047: 5365-00-276-3459, 2925-00-497-5075, 3455-01-047-4288 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20428?

Key specifications for 20428: Scale Division Quantity: 20 SINGLE INDICATOR FIRST RANGE; Movement Type: MOVING IRON VANE; Scale Division Quantity: 30 SINGLE INDICATOR SECOND RANGE; Color: UNABLE TO DECODE. 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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