PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

900308-3Voltmeter

Raytheon Company Dba Raytheon · NSN 6625-00-542-0830 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-542-0830 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-542-0830. Primary manufacturer part number: 900308-3.
Features
  • Voltmeter — FSC 6625
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
  • Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE
  • Mounting Hole Diameter: 0.138 INCHES NOMINAL IN
  • Circuit Attachment Method and Quantity: 2 SOLDER LUG
  • Dial Scale Marking Color: BLACK AND BLUE AND WHITE SINGLE INDICATOR ALL RANGES
  • Scale Graduation Type: LINEAR SINGLE INDICATOR ALL RANGES
  • Meter Body Diameter Behind Mounting Flange: 2.800 INCHES MAXIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-542-0830, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-542-0830
Primary Part Number900308-3
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Hole Diameter0.138 INCHES NOMINAL IN
Circuit Attachment Method and Quantity2 SOLDER LUG
Dial Scale Marking ColorBLACK AND BLUE AND WHITE SINGLE INDICATOR ALL RANGES
Scale Graduation TypeLINEAR SINGLE INDICATOR ALL RANGES
Meter Body Diameter Behind Mounting Flange2.800 INCHES MAXIMUM IN
Nuclear Hardness Critical FeatureNONHARDENED
FSC Application DataTEST SET,ELECT. EQUIP.
Special Test FeaturesCONFORMS TO MIL-M-10304
Mounting Facility Type and Quantity3 SCREW AND 3 UNTHREADED HOLE(S)
Furnished Items and QuantityNUT 3; WASHER 3
Special MarkingsWHITE BAND WITH BLACK LETTER A AT NEG 50 TO NEG 39.3 UA; WHITE BAND WITH BLACK LETTER B AT NEG 15 TO 15 UA; WHITE BAND WITH BLACK LETTER C AT 41.9 TO 46.3 UA; BLUE BAND WITH BLACK LETTER D AT BDT OF ARC AT 38.2 TO 50 UA
Meter Depth Behind Mounting Flange1.660 INCHES MAXIMUM IN
Scale Division Quantity2 SINGLE INDICATOR ALL RANGES
Measurement Range-150.0 TO 400.0 VOLTS, DC SINGLE INDICATOR SECOND RANGE
Indicator TypeDIAL W/POINTER
Sensitivity Rating50.0 MICROAMPERES
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Overall Diameter3.510 INCHES MAXIMUM IN
Measurement Range-150.0 TO 450.0 VOLTS, DC SINGLE INDICATOR THIRD RANGE
Movement TypeMOVING COIL, PERMANENT MAGNET
ColorUNABLE TO DECODE
Measurement Range-150.0 TO 300.0 VOLTS, DC SINGLE INDICATOR FIRST RANGE
Pointer ColorBLACK SINGLE INDICATOR ALL RANGES
Installation DesignPANEL
Features ProvidedZERO ADJUSTER
Circuit Current for Which DesignedDC
Power SourceEXTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-102-4748 (51261-90015)
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeLN
Verified Substitutes 5
6625-00-102-474851261-90015 SUCCESSOR
Meter,special Scale
Textron Systems Corporation Dba Textron Systems Corp
6625-00-238-54061531 SUCCESSOR
Voltmeter
American Instrument Corp
Voltmeter
5930-00-020-9253900308-3 INTERCHANGEABLE
Switch,stepping
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5930-01-576-2669802X-A4 INTERCHANGEABLE
Switch,sensitive
Jered Llc
Cross-Reference Index
Part NumberManufacturer
30-012980 Phaostron Instrument and Electronic Company (USA)
1531 Solartron Electronics Inc Weston Instruments Div (USA)
900308-3 PRIMARY Raytheon Company Dba Raytheon (USA)
1531-185086 Solartron Electronics Inc Weston Instruments Div (USA)
185086 Solartron Electronics Inc Weston Instruments Div (USA)
Related Parts
SUCCESSOR 6625-00-102-4748 Meter,special Scale · 51261-90015
6625-00-238-5406SUCCESSOR
VOLTMETER
1531
6625-00-668-8049SUCCESSOR
VOLTMETER
5930-00-020-9253INTERCHANGEABLE
SWITCH,STEPPING
900308-3
5930-01-576-2669INTERCHANGEABLE
SWITCH,SENSITIVE
802X-A4

Frequently Asked Questions

What is NSN 6625-00-542-0830?

NSN 6625-00-542-0830 is a Voltmeter, manufactured by Raytheon Company Dba Raytheon, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-542-0830?

NSN 6625-00-542-0830 has 5 cross-referenced part numbers: 30-012980 (Phaostron Instrument and Electronic Company), 1531 (Solartron Electronics Inc Weston Instruments Div), 900308-3 (Raytheon Company Dba Raytheon), 1531-185086 (Solartron Electronics Inc Weston Instruments Div), 185086 (Solartron Electronics Inc Weston Instruments Div).

What NSN replaces 6625-00-542-0830?

There are 5 known substitutes for 6625-00-542-0830: 6625-00-102-4748, 6625-00-238-5406, 6625-00-668-8049 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 900308-3?

Key specifications for 900308-3: Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES; Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE; Mounting Hole Diameter: 0.138 INCHES NOMINAL IN; Circuit Attachment Method and Quantity: 2 SOLDER LUG. 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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