PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1227-2520Ammeter

Simpson Electronics Inc · NSN 6625-00-487-8039 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-487-8039 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-487-8039. Primary manufacturer part number: 1227-2520.
Features
  • Ammeter — FSC 6625
  • Mounting Facility Type and Quantity: 4 THREADED STUD(S)
  • Movement Type: MOVING COIL, PERMANENT MAGNET
  • Measurement Range: +0.0 TO 30.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
  • Installation Design: PANEL
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Nuclear Hardness Critical Feature: NONHARDENED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-487-8039, 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 Electronics Inc. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-487-8039
Primary Part Number1227-2520
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerSimpson Electronics Inc
StatusACTIVE
Mounting Facility Type and Quantity4 THREADED STUD(S)
Movement TypeMOVING COIL, PERMANENT MAGNET
Measurement Range+0.0 TO 30.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Circuit Attachment Method and Quantity2 THREADED STUD
Installation DesignPANEL
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Nuclear Hardness Critical FeatureNONHARDENED
Scale Division Quantity30 SINGLE INDICATOR SINGLE RANGE
Mounting Stud Length0.540 INCHES NOMINAL IN
Meter Body Diameter Behind Mounting Flange2.170 INCHES NOMINAL IN
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.760 INCHES NOMINAL IN
Panel for Which DesignedNONMAGNETIC
Scale Selection MethodTERMINAL
Movement Suspension MethodJEWEL PIVOT BASE
Mounting Stud Diameter0.112 INCHES NOMINAL IN
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedDC
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Indicator TypeDIAL W/POINTER
Center to Center Distance Between Mounting Facilities Parallel to Length1.880 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.880 INCHES NOMINAL IN
Features ProvidedZERO ADJUSTER
Circuit Construction TypeNONELECTRONIC
FSC Application DataTEST SET,ELECTRONIC EQUIPMENT
Style DesignatorRECTANGULAR FLUSH MTG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJF
Verified Substitutes 8
6625-00-407-89271029614 SUCCESSOR
Ammeter
Triplett (bluffton) Corporation Dba Lfe Instruments
Generator,signal
5120-00-180-0670BC4A INTERCHANGEABLE
Vise,pipe
Ridge Tool Company
4130-00-959-1615122725-20 INTERCHANGEABLE
Filter Element,air Conditioning
Falls Filtration Technologies, Inc.
6625-01-262-99562520 INTERCHANGEABLE
Calibrator,electrical Power
Boonton Electronics Corporation Div Boonton Electronics
4730-01-493-409502520 INTERCHANGEABLE
Ring,expansion,hose
Amerex Corporation Dba Amerex Corp
5365-01-526-3359BD0360XXXX INTERCHANGEABLE
Bushing,machine Thread
Ilco Unican Corp Dba Wolf Sales
5315-01-668-076702520 INTERCHANGEABLE
Pin,spring
Tru-Hitch, Inc.
Cross-Reference Index
Part NumberManufacturer
1227-2520 Simpson Electronics Inc (USA)
2520 Simpson Electronics Inc (USA)
02520 Simpson Electronics Inc (USA)
Related Parts
6625-00-407-8927SUCCESSOR
AMMETER
1029614
6625-00-807-0165SUCCESSOR
GENERATOR,SIGNAL
5120-00-180-0670INTERCHANGEABLE
VISE,PIPE
BC4A
4130-00-959-1615INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
122725-20
6625-01-262-9956INTERCHANGEABLE
CALIBRATOR,ELECTRICAL POWER
2520
4730-01-493-4095INTERCHANGEABLE
RING,EXPANSION,HOSE
02520
5365-01-526-3359INTERCHANGEABLE
BUSHING,MACHINE THREAD
BD0360XXXX
5315-01-668-0767INTERCHANGEABLE
PIN,SPRING
02520

Frequently Asked Questions

What is NSN 6625-00-487-8039?

NSN 6625-00-487-8039 is a Ammeter, manufactured by Simpson Electronics Inc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-487-8039?

NSN 6625-00-487-8039 has 3 cross-referenced part numbers: 1227-2520 (Simpson Electronics Inc), 2520 (Simpson Electronics Inc), 02520 (Simpson Electronics Inc).

What NSN replaces 6625-00-487-8039?

There are 8 known substitutes for 6625-00-487-8039: 6625-00-407-8927, 6625-00-807-0165, 5120-00-180-0670 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1227-2520?

Key specifications for 1227-2520: Mounting Facility Type and Quantity: 4 THREADED STUD(S); Movement Type: MOVING COIL, PERMANENT MAGNET; Measurement Range: +0.0 TO 30.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE; Circuit Attachment Method and Quantity: 2 THREADED STUD. 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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