PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

266Voltmeter

Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging · NSN 6625-00-649-4816 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-649-4816 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-649-4816. Primary manufacturer part number: 266.
Features
  • Voltmeter — FSC 6625
  • Special Markings: SEALED DO NOT OPEN ON BACK OF METER
  • Installation Design: PANEL
  • Meter Depth Behind Mounting Flange: 1.600 INCHES MAXIMUM IN
  • Specification/standard Data: 81349-MIL-M-10304/6 GOVERNMENT SPECIFICATION
  • Indicator Type: DIAL W/POINTER
  • Material: STEEL CORROSION RESISTING
  • Test Data Document: 81349-MIL-M-10304 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-649-4816, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-649-4816
Primary Part Number266
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerJewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging
StatusACTIVE
Special MarkingsSEALED DO NOT OPEN ON BACK OF METER
Installation DesignPANEL
Meter Depth Behind Mounting Flange1.600 INCHES MAXIMUM IN
Specification/standard Data81349-MIL-M-10304/6 GOVERNMENT SPECIFICATION
Indicator TypeDIAL W/POINTER
MaterialSTEEL CORROSION RESISTING
Test Data Document81349-MIL-M-10304 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
ColorUNABLE TO DECODE
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Movement Suspension MethodTAUT BAND
Dielectric Withstanding Voltage in Volts3000.0
FSC Application DataTEST SET,ELECT. EQUIP.
Special Test FeaturesCONFORMS TO MIL-M-10304/6
Nuclear Hardness Critical FeatureNONHARDENED
Meter Body Diameter Behind Mounting Flange2.210 INCHES MAXIMUM IN
Measurement Range+0.0 TO 10.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Mounting Hole Diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Style DesignatorROUND FLUSH MTG
Movement TypeMOVING IRON VANE
Circuit Attachment Method and Quantity2 SOLDER LUG AND 2 THREADED STUD
Overall Diameter2.695 INCHES MAXIMUM IN
Environmental ProtectionCOLD RESISTANT AND HEAT RESISTANT AND SHOCK RESISTANT AND SUBMERSIBLE AND VIBRATION RESISTANT AND WATERTIGHT
Mounting Facility Type and Quantity3 SCREW AND 3 UNTHREADED HOLE(S)
Power SourceEXTERNAL
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-555-3094
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeZN
Weight0.4938 lbs
Cube0.0183 cu ft
Verified Substitutes 11
Voltmeter
Voltmeter
Ammeter
6625-00-881-2274128C505H01 SUCCESSOR
Ammeter
Northrop Grumman Support Services Corp
6625-01-005-5132483659-1 SUCCESSOR
Ammeter
Raytheon Company Dba Raytheon Co
Voltmeter
Breakout Panel
5998-01-137-996526-6 INTERCHANGEABLE
Holder,electrical Card
Schroff Inc
6625-01-202-4639A81000 INTERCHANGEABLE
Voltmeter
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
6625-01-269-414063A133507P2 INTERCHANGEABLE
Ammeter
Yokogawa Corporation of America
Cross-Reference Index
Part NumberManufacturer
266 Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging (USA)
SC-4010 Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging (USA)
MIL-M-10304/6 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MR26W010AFVVR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-10304/6 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 6625-00-555-3094 Voltmeter
6625-00-106-7522SUCCESSOR
VOLTMETER
6625-00-585-9956SUCCESSOR
AMMETER
6625-00-881-2274SUCCESSOR
AMMETER
128C505H01
6625-01-005-5132SUCCESSOR
AMMETER
483659-1
6625-01-099-3791SUCCESSOR
VOLTMETER
5895-01-548-7740SUCCESSOR
BREAKOUT PANEL
5998-01-137-9965INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
26-6
6625-01-202-4639INTERCHANGEABLE
VOLTMETER
A81000
6625-01-269-4140INTERCHANGEABLE
AMMETER
63A133507P2
6625-01-330-6519INTERCHANGEABLE
VOLTMETER

Frequently Asked Questions

What is NSN 6625-00-649-4816?

NSN 6625-00-649-4816 is a Voltmeter, manufactured by Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-649-4816?

NSN 6625-00-649-4816 has 5 cross-referenced part numbers: 266 (Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging), SC-4010 (Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging), MIL-M-10304/6 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MR26W010AFVVR (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-10304/6 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-649-4816?

There are 11 known substitutes for 6625-00-649-4816: 6625-00-106-7522, 6625-00-555-3094, 6625-00-585-9956 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 266?

Key specifications for 266: Special Markings: SEALED DO NOT OPEN ON BACK OF METER; Installation Design: PANEL; Meter Depth Behind Mounting Flange: 1.600 INCHES MAXIMUM IN; Specification/standard Data: 81349-MIL-M-10304/6 GOVERNMENT SPECIFICATION. 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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