PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21012Ammeter

Numax Electronics Inc · NSN 6625-00-578-5476 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-578-5476 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-578-5476. Primary manufacturer part number: 21012.
Features
  • Ammeter — FSC 6625
  • Meter Body Diameter Behind Mounting Flange: 2.800 INCHES NOMINAL IN
  • Scale Division Quantity: 50 SINGLE INDICATOR SINGLE RANGE
  • Indicator Type: DIAL W/POINTER
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Panel for Which Designed: MAGNETIC
  • Style Designator: ROUND FLUSH MTG
  • Circuit Attachment Method and Quantity: 2 SOLDER STUD
Applications
  • Applications requiring Plastic construction
General Description

The Ammeter, cataloged under National Stock Number 6625-00-578-5476, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Numax Electronics Inc. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-578-5476
Primary Part Number21012
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerNumax Electronics Inc
StatusACTIVE
Meter Body Diameter Behind Mounting Flange2.800 INCHES NOMINAL IN
Scale Division Quantity50 SINGLE INDICATOR SINGLE RANGE
Indicator TypeDIAL W/POINTER
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Panel for Which DesignedMAGNETIC
Style DesignatorROUND FLUSH MTG
Circuit Attachment Method and Quantity2 SOLDER STUD
Circuit Construction TypeNONELECTRONIC
Circuit Current for Which DesignedDC
Mounting Hole Diameter0.150 INCHES NOMINAL IN
Movement Suspension MethodJEWEL PIVOT BASE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
MaterialPLASTIC
Environmental ProtectionDUSTPROOF
Sensitivity Rating50.0 MILLIVOLTS
Overall Diameter3.500 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Movement TypeMOVING COIL, PERMANENT MAGNET
Nuclear Hardness Critical FeatureNONHARDENED
Power SourceEXTERNAL
Meter Depth Behind Mounting Flange2.010 INCHES NOMINAL IN
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Scale Selection MethodTERMINAL
Installation DesignPANEL
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Measurement Range+0.0 TO 250.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Furnished Items and QuantitySHUNT,EXTERNAL 1,BURLINGTON INSTRUMENT CO. PART NO.A31X166
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeLN
Verified Substitutes 12
3110-00-100-418521012 INTERCHANGEABLE
Bearing,roller,tapered
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
5325-00-290-4344 INTERCHANGEABLE
Grommet,nonmetallic
5950-00-494-335721012 INTERCHANGEABLE
Transformer,audio Frequency
Magnetika Inc
5950-00-521-1209 INTERCHANGEABLE
Transformer,power
2990-00-675-14861876 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
5110-00-764-52225110-00-764-5222 INTERCHANGEABLE
Cutter,circle
General Services Administration Federal Supply Service
2990-00-869-5710210-12 INTERCHANGEABLE
Muffler,exhaust
Crane Carrier Company, Llc
5940-00-983-6089 INTERCHANGEABLE
Terminal Board
5330-00-994-206921012 INTERCHANGEABLE
Gasket
Aerosonic Llc
4820-01-012-286321012 INTERCHANGEABLE
Body,valve
Rogerson Aircraft Equipment Group
Cross-Reference Index
Part NumberManufacturer
21012 Numax Electronics Inc (USA)
21012 U M C Electronics Co (USA)
Related Parts
3110-00-100-4185INTERCHANGEABLE
BEARING,ROLLER,TAPERED
21012
5325-00-290-4344INTERCHANGEABLE
GROMMET,NONMETALLIC
5950-00-494-3357INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
21012
5950-00-521-1209INTERCHANGEABLE
TRANSFORMER,POWER
2990-00-675-1486INTERCHANGEABLE
MUFFLER,EXHAUST
1876
5110-00-764-5222INTERCHANGEABLE
CUTTER,CIRCLE
5110-00-764-5222
2990-00-869-5710INTERCHANGEABLE
MUFFLER,EXHAUST
210-12
5940-00-983-6089INTERCHANGEABLE
TERMINAL BOARD
5330-00-994-2069INTERCHANGEABLE
GASKET
21012
4820-01-012-2863INTERCHANGEABLE
BODY,VALVE
21012
3455-01-051-1326INTERCHANGEABLE
INSERT,CUTTING TOOL
1B2F
6505-01-148-8033INTERCHANGEABLE
CETYLPYRIDINIUM CHLORIDE SOLUTIO

Frequently Asked Questions

What is NSN 6625-00-578-5476?

NSN 6625-00-578-5476 is a Ammeter, manufactured by Numax Electronics Inc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-578-5476?

NSN 6625-00-578-5476 has 2 cross-referenced part numbers: 21012 (Numax Electronics Inc), 21012 (U M C Electronics Co).

What NSN replaces 6625-00-578-5476?

There are 12 known substitutes for 6625-00-578-5476: 3110-00-100-4185, 5325-00-290-4344, 5950-00-494-3357 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21012?

Key specifications for 21012: Meter Body Diameter Behind Mounting Flange: 2.800 INCHES NOMINAL IN; Scale Division Quantity: 50 SINGLE INDICATOR SINGLE RANGE; Indicator Type: DIAL W/POINTER; Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE 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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