PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

02599Ammeter

Simpson Electric Company, Inc. · NSN 6625-01-123-5427 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-123-5427 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-123-5427. Primary manufacturer part number: 02599.
Features
  • Ammeter — FSC 6625
  • Style Designator: RECTANGULAR FLUSH MTG
  • Nuclear Hardness Critical Feature: NONHARDENED
  • Mounting Stud Length: 0.540 INCHES NOMINAL IN
  • FSC Application Data: TEST SET,ELECT. EQUIP.
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Movement Type: MOVING IRON VANE
  • Material: PLASTIC
Applications
  • Applications requiring Plastic construction
General Description

The Ammeter, cataloged under National Stock Number 6625-01-123-5427, 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 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-123-5427
Primary Part Number02599
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerSimpson Electric Company, Inc.
StatusACTIVE
Style DesignatorRECTANGULAR FLUSH MTG
Nuclear Hardness Critical FeatureNONHARDENED
Mounting Stud Length0.540 INCHES NOMINAL IN
FSC Application DataTEST SET,ELECT. EQUIP.
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Movement TypeMOVING IRON VANE
MaterialPLASTIC
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
ColorUNABLE TO DECODE
Circuit Attachment Method and Quantity2 THREADED STUD
Mounting Facility Type and Quantity4 THREADED STUD(S)
Power SourceEXTERNAL
Movement Suspension MethodTAUT BAND
Features ProvidedMAGNETIC SHIELD AND ZERO ADJUSTER
Mounting Stud Diameter0.112 INCHES NOMINAL IN
Circuit Construction TypeNONELECTRONIC
Measurement Range+0.0 TO 15.0 AMPERES, AC SINGLE INDICATOR SINGLE RANGE
Scale Graduation TypeNONLINEAR SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Meter Body Diameter Behind Mounting Flange2.170 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length1.880 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Circuit Current for Which DesignedAC
Indicator TypeDIAL W/POINTER
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Center to Center Distance Between Mounting Facilities Parallel to Width1.880 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Verified Substitutes 7
6625-00-889-1624GM80SEU2 SUCCESSOR
Ammeter
Northrop Grumman Systems Corporation
Ammeter
6625-00-020-0103626-102 INTERCHANGEABLE
Voltmeter
Jewell Instruments Llc
6625-00-028-3542 INTERCHANGEABLE
Ammeter
6625-00-485-8223GM805EU1 INTERCHANGEABLE
Ammeter
Northrop Grumman Systems Corporation
5815-00-603-67932599 INTERCHANGEABLE
Clutch Release Assembly
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
6625-01-267-107402590 INTERCHANGEABLE
Ammeter
Simpson Electric Company, Inc.
Cross-Reference Index
Part NumberManufacturer
1257-2599 Simpson Electric Company, Inc. (USA)
02599 PRIMARY Simpson Electric Company, Inc. (USA)
1257 Simpson Electric Company, Inc. (USA)
1257-02599 Simpson Electric Company, Inc. (USA)
Related Parts
6625-00-889-1624SUCCESSOR
AMMETER
GM80SEU2
6625-01-237-7371SUCCESSOR
AMMETER
6625-00-020-0103INTERCHANGEABLE
VOLTMETER
626-102
6625-00-028-3542INTERCHANGEABLE
AMMETER
6625-00-485-8223INTERCHANGEABLE
AMMETER
GM805EU1
5815-00-603-6793INTERCHANGEABLE
CLUTCH RELEASE ASSEMBLY
2599
6625-01-267-1074INTERCHANGEABLE
AMMETER
02590

Frequently Asked Questions

What is NSN 6625-01-123-5427?

NSN 6625-01-123-5427 is a Ammeter, manufactured by Simpson Electric Company, Inc., classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-123-5427?

NSN 6625-01-123-5427 has 4 cross-referenced part numbers: 1257-2599 (Simpson Electric Company, Inc.), 02599 (Simpson Electric Company, Inc.), 1257 (Simpson Electric Company, Inc.), 1257-02599 (Simpson Electric Company, Inc.).

What NSN replaces 6625-01-123-5427?

There are 7 known substitutes for 6625-01-123-5427: 6625-00-889-1624, 6625-01-237-7371, 6625-00-020-0103 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 02599?

Key specifications for 02599: Style Designator: RECTANGULAR FLUSH MTG; Nuclear Hardness Critical Feature: NONHARDENED; Mounting Stud Length: 0.540 INCHES NOMINAL IN; Overall Height: 2.470 INCHES NOMINAL IN. 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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