PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

122-977Voltmeter

Rogerson Kratos · NSN 6625-00-110-5891 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-110-5891 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-110-5891. Primary manufacturer part number: 122-977.
Features
  • Voltmeter — FSC 6625
  • Installation Design: PANEL
  • Environmental Protection: SHOCK RESISTANT AND VIBRATION RESISTANT
  • Mounting Bolt Circle Diameter: 2.440 INCHES NOMINAL IN
  • Measurement Range: +0.0 TO 30.0 VOLTS, DC SINGLE INDICATOR SECOND RANGE
  • Movement Type: MOVING COIL, PERMANENT MAGNET
  • Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR ALL RANGES
Applications
  • Applications requiring Steel construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-110-5891, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Rogerson Kratos. Government technical data includes 28 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-110-5891
Primary Part Number122-977
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerRogerson Kratos
StatusACTIVE
Installation DesignPANEL
Environmental ProtectionSHOCK RESISTANT AND VIBRATION RESISTANT
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Measurement Range+0.0 TO 30.0 VOLTS, DC SINGLE INDICATOR SECOND RANGE
Movement TypeMOVING COIL, PERMANENT MAGNET
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Dial Scale Marking ColorBLACK SINGLE INDICATOR ALL RANGES
Scale Division Quantity30 SINGLE INDICATOR ALL RANGES
Indicator TypeDIAL W/POINTER
Overall Diameter2.695 INCHES NOMINAL IN
Features ProvidedMAGNETIC SHIELD AND ZERO ADJUSTER
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Circuit Attachment Method and Quantity2 THREADED STUD
Power SourceEXTERNAL
Pointer ColorBLACK SINGLE INDICATOR ALL RANGES
MaterialSTEEL
Circuit Current for Which DesignedDC
Scale Graduation TypeLINEAR SINGLE INDICATOR ALL RANGES
Dielectric Withstanding Voltage in Volts3000.0
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Measurement Range+0.0 TO 15.0 VOLTS, DC SINGLE INDICATOR FIRST RANGE
Nuclear Hardness Critical FeatureNONHARDENED
Movement Suspension MethodJEWEL PIVOT BASE
ColorUNABLE TO DECODE
Test Data Document81349-MIL-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.).
Style DesignatorROUND FLUSH MTG
Meter Depth Behind Mounting Flange1.600 INCHES NOMINAL IN
Meter Body Diameter Behind Mounting Flange2.210 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0100 lbs
Cube0.0010 cu ft
Verified Substitutes 1
6625-00-332-6211SC-C-24420 SUCCESSOR
Multimeter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
621 Phaostron Instrument and Electronic Company (USA)
621-1460 Phaostron Instrument and Electronic Company (USA)
903556-1 Honeywell International Inc. Div Aerospace - Torrance (USA)
621-14601 Phaostron Instrument and Electronic Company (USA)
122-977 PRIMARY Rogerson Kratos (USA)
Related Parts
6625-00-332-6211SUCCESSOR
MULTIMETER
SC-C-24420

Frequently Asked Questions

What is NSN 6625-00-110-5891?

NSN 6625-00-110-5891 is a Voltmeter, manufactured by Rogerson Kratos, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-110-5891?

NSN 6625-00-110-5891 has 5 cross-referenced part numbers: 621 (Phaostron Instrument and Electronic Company), 621-1460 (Phaostron Instrument and Electronic Company), 903556-1 (Honeywell International Inc. Div Aerospace - Torrance), 621-14601 (Phaostron Instrument and Electronic Company), 122-977 (Rogerson Kratos).

What NSN replaces 6625-00-110-5891?

There is 1 known substitute for 6625-00-110-5891: 6625-00-332-6211. Verify interchangeability with system specifications before substitution.

What are the specifications of 122-977?

Key specifications for 122-977: Installation Design: PANEL; Environmental Protection: SHOCK RESISTANT AND VIBRATION RESISTANT; Mounting Bolt Circle Diameter: 2.440 INCHES NOMINAL IN; Measurement Range: +0.0 TO 30.0 VOLTS, DC SINGLE INDICATOR SECOND RANGE. 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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