PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

301Ammeter

Solartron Electronics Inc Weston Instruments Div · NSN 6625-00-188-3121 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-188-3121 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-188-3121. Primary manufacturer part number: 301.
Features
  • Ammeter — FSC 6625
  • Mounting Hole Diameter: 0.125 INCHES NOMINAL IN
  • Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S)
  • Circuit Attachment Method and Quantity: 2 THREADED STUD
  • Movement Suspension Method: JEWEL PIVOT BASE
  • Measurement Range: +0.0 TO 50.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
  • Circuit Current for Which Designed: DC
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-188-3121, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Solartron Electronics Inc Weston Instruments Div. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-188-3121
Primary Part Number301
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerSolartron Electronics Inc Weston Instruments Div
StatusACTIVE
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Circuit Attachment Method and Quantity2 THREADED STUD
Movement Suspension MethodJEWEL PIVOT BASE
Measurement Range+0.0 TO 50.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedDC
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Overall Diameter3.250 INCHES NOMINAL IN
Sensitivity Rating50.0 MILLIVOLTS
Style DesignatorROUND FLUSH MTG
Movement TypeMOVING COIL, PERMANENT MAGNET
Scale Division Quantity50 SINGLE INDICATOR SINGLE RANGE
Mounting Bolt Circle Diameter2.900 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.030 INCHES NOMINAL IN
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Meter Body Diameter Behind Mounting Flange2.560 INCHES NOMINAL IN
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Circuit Attachment Method and Quantity2 THREADED STUD
Movement Suspension MethodJEWEL PIVOT BASE
Measurement Range+0.0 TO 50.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedDC
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Overall Diameter3.250 INCHES NOMINAL IN
Sensitivity Rating50.0 MILLIVOLTS
Style DesignatorROUND FLUSH MTG
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-153-9058 (136301-087)
HAZMATNo
Verified Substitutes 5
6625-00-153-9058136301-087 SUCCESSOR
Voltmeter
Exide Corp San Francisco District Industrial Div
6625-00-433-4263301 SUCCESSOR
Generator,signal
Fluke Biomedical Corporation
Voltmeter
7045-01-050-2331301 SUCCESSOR
Merger,slitter
The Standard Register Company
5998-01-363-640630-1 SUCCESSOR
Circuit Card Assembly
Celtech Corporation
Cross-Reference Index
Part NumberManufacturer
301 Solartron Electronics Inc Weston Instruments Div (USA)
Related Parts
SUCCESSOR 6625-00-153-9058 Voltmeter · 136301-087
6625-00-433-4263SUCCESSOR
GENERATOR,SIGNAL
301
6625-00-643-1792SUCCESSOR
VOLTMETER
7045-01-050-2331SUCCESSOR
MERGER,SLITTER
301
5998-01-363-6406SUCCESSOR
CIRCUIT CARD ASSEMBLY
30-1

Frequently Asked Questions

What is NSN 6625-00-188-3121?

NSN 6625-00-188-3121 is a Ammeter, manufactured by Solartron Electronics Inc Weston Instruments Div, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-188-3121?

NSN 6625-00-188-3121 has 1 cross-referenced part number: 301 (Solartron Electronics Inc Weston Instruments Div).

What NSN replaces 6625-00-188-3121?

There are 5 known substitutes for 6625-00-188-3121: 6625-00-153-9058, 6625-00-433-4263, 6625-00-643-1792 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 301?

Key specifications for 301: Mounting Hole Diameter: 0.125 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Circuit Attachment Method and Quantity: 2 THREADED STUD; Movement Suspension Method: JEWEL PIVOT BASE. 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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