PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

127Ammeter

Simpson Electric Company, Inc. · NSN 6625-00-752-7556 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-752-7556 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-752-7556. Primary manufacturer part number: 127.
Features
  • Ammeter — FSC 6625
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
  • Measurement Range: +0.0 TO 50.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S)
  • Style Designator: RECTANGULAR FLUSH MTG
  • Special Markings: CRYSTAL CURRENT
  • Material: PLASTIC
  • Movement Type: MOVING COIL, PERMANENT MAGNET
Applications
  • Applications requiring Plastic construction
General Description

The Ammeter, cataloged under National Stock Number 6625-00-752-7556, 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 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
NSN6625-00-752-7556
Primary Part Number127
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerSimpson Electric Company, Inc.
StatusACTIVE
Circuit Attachment Method and Quantity2 THREADED STUD
Measurement Range+0.0 TO 50.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S)
Style DesignatorRECTANGULAR FLUSH MTG
Special MarkingsCRYSTAL CURRENT
MaterialPLASTIC
Movement TypeMOVING COIL, PERMANENT MAGNET
Meter Body Diameter Behind Mounting Flange2.219 INCHES NOMINAL IN
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Meter Depth Behind Mounting Flange1.770 INCHES NOMINAL IN
Installation DesignPANEL
Scale Division Quantity25 SINGLE INDICATOR SINGLE RANGE
Dial Scale Marking ColorWHITE SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Features ProvidedZERO ADJUSTER AND SELF-ILLUMINATION FACILITY
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.875 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Center to Center Distance Between Mounting Facilities Parallel to Length1.875 INCHES NOMINAL IN
Sensitivity Rating100.0 MILLIVOLTS
ColorUNABLE TO DECODE
Circuit Current for Which DesignedDC
FSC Application DataTEST SET,ELECT. EQUIP.
Circuit Attachment Method and Quantity2 THREADED STUD
Measurement Range+0.0 TO 50.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S)
Style DesignatorRECTANGULAR FLUSH MTG
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-504-2980
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeYN
Weight1.0000 lbs
Cube0.0270 cu ft
Verified Substitutes 12
6625-00-043-230501720 SUCCESSOR
Ammeter
Simpson Electric Company, Inc.
Ammeter
Meter,arbitrary Scale
Circuit Card Assembly
6625-01-462-6376506 SUCCESSOR
Multimeter
Hc Protek
6625-01-540-3811506 SUCCESSOR
Case,electrical-Electronic Test
Platt Luggage, Inc.
6625-00-051-9029 INTERCHANGEABLE
Galvanometer
6625-00-186-8296 INTERCHANGEABLE
Ammeter
6625-00-440-6548 INTERCHANGEABLE
Ammeter
6625-00-538-8996 INTERCHANGEABLE
Ammeter
Cross-Reference Index
Part NumberManufacturer
127 Simpson Electric Company, Inc. (USA)
506 Solartron Electronics Inc Weston Instruments Div (USA)
Related Parts
SUCCESSOR 6625-00-504-2980 Meter,arbitrary Scale
6625-00-043-2305SUCCESSOR
AMMETER
01720
6625-00-070-1703SUCCESSOR
AMMETER
5998-01-352-9949SUCCESSOR
CIRCUIT CARD ASSEMBLY
6625-01-462-6376SUCCESSOR
MULTIMETER
506
6625-01-540-3811SUCCESSOR
CASE,ELECTRICAL-ELECTRONIC TEST
506
6625-00-051-9029INTERCHANGEABLE
GALVANOMETER
6625-00-186-8296INTERCHANGEABLE
AMMETER
6625-00-440-6548INTERCHANGEABLE
AMMETER
6625-00-538-8996INTERCHANGEABLE
AMMETER
6625-00-571-4459INTERCHANGEABLE
MULTIMETER
6625-00-602-3951INTERCHANGEABLE
AMMETER

Frequently Asked Questions

What is NSN 6625-00-752-7556?

NSN 6625-00-752-7556 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 6625-00-752-7556?

NSN 6625-00-752-7556 has 2 cross-referenced part numbers: 127 (Simpson Electric Company, Inc.), 506 (Solartron Electronics Inc Weston Instruments Div).

What NSN replaces 6625-00-752-7556?

There are 12 known substitutes for 6625-00-752-7556: 6625-00-043-2305, 6625-00-070-1703, 6625-00-504-2980 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 127?

Key specifications for 127: Circuit Attachment Method and Quantity: 2 THREADED STUD; Measurement Range: +0.0 TO 50.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Height: 2.375 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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