PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7690-1Voltmeter

Kurz & Root Generator Company, Llc · NSN 6625-00-604-2638 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-604-2638 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-604-2638. Primary manufacturer part number: 7690-1.
Features
  • Voltmeter — FSC 6625
  • Installation Design: PANEL
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Color: UNABLE TO DECODE
  • Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE
  • Meter Body Diameter Behind Mounting Flange: 2.750 INCHES NOMINAL IN
  • Measurement Range: +0.0 TO 150.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-604-2638, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Kurz & Root Generator Company, Llc. Government technical data includes 29 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-604-2638
Primary Part Number7690-1
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerKurz & Root Generator Company, Llc
StatusACTIVE
Installation DesignPANEL
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
ColorUNABLE TO DECODE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Meter Body Diameter Behind Mounting Flange2.750 INCHES NOMINAL IN
Measurement Range+0.0 TO 150.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Indicator TypeDIAL W/POINTER
Nuclear Hardness Critical FeatureNONHARDENED
FSC Application DataTEST SET,ELECTRONIC EQUIPMENT
Meter Depth Behind Mounting Flange1.515 INCHES NOMINAL IN
Style DesignatorROUND FLUSH MTG
Scale Division Quantity30 SINGLE INDICATOR SINGLE RANGE
Movement TypeMOVING IRON VANE
Overall Diameter3.500 INCHES NOMINAL IN
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Circuit Current for Which DesignedAC
Circuit Attachment Method and Quantity2 SOLDER STUD
Features ProvidedZERO ADJUSTER
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Mounting Hole Diameter0.150 INCHES NOMINAL IN
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
ColorUNABLE TO DECODE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Meter Body Diameter Behind Mounting Flange2.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeLN
Verified Substitutes 7
1005-00-019-79036186 INTERCHANGEABLE
Catch,magazine
Smith & Wesson Sales Company
3110-00-142-428710958 INTERCHANGEABLE
Bearing,ball,airframe
Cae Usa Inc.
5330-00-172-9486 INTERCHANGEABLE
Seal,plain Encased
5960-00-504-8395 INTERCHANGEABLE
Electron Tube
4820-00-541-27556186 INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
6350-01-308-8367769-01 INTERCHANGEABLE
Annunciator
Hose-Mccann Telephone Co, Inc
6650-01-466-94806186 INTERCHANGEABLE
Stage Micrometer,microscope
Bioquip Products, Inc.
Cross-Reference Index
Part NumberManufacturer
7690-1 Kurz & Root Generator Company, Llc (USA)
M55S00561 Simpson Electric Company, Inc. (USA)
S06186 Simpson Electric Company, Inc. (USA)
M55S Simpson Electric Company, Inc. (USA)
6186 Simpson Electric Company, Inc. (USA)
Related Parts
1005-00-019-7903INTERCHANGEABLE
CATCH,MAGAZINE
6186
3110-00-142-4287INTERCHANGEABLE
BEARING,BALL,AIRFRAME
10958
5330-00-172-9486INTERCHANGEABLE
SEAL,PLAIN ENCASED
5960-00-504-8395INTERCHANGEABLE
ELECTRON TUBE
4820-00-541-2755INTERCHANGEABLE
VALVE,SAFETY RELIEF
6186
6350-01-308-8367INTERCHANGEABLE
ANNUNCIATOR
769-01
6650-01-466-9480INTERCHANGEABLE
STAGE MICROMETER,MICROSCOPE
6186

Frequently Asked Questions

What is NSN 6625-00-604-2638?

NSN 6625-00-604-2638 is a Voltmeter, manufactured by Kurz & Root Generator Company, Llc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-604-2638?

NSN 6625-00-604-2638 has 5 cross-referenced part numbers: 7690-1 (Kurz & Root Generator Company, Llc), M55S00561 (Simpson Electric Company, Inc.), S06186 (Simpson Electric Company, Inc.), M55S (Simpson Electric Company, Inc.), 6186 (Simpson Electric Company, Inc.).

What NSN replaces 6625-00-604-2638?

There are 7 known substitutes for 6625-00-604-2638: 1005-00-019-7903, 3110-00-142-4287, 5330-00-172-9486 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7690-1?

Key specifications for 7690-1: Installation Design: PANEL; Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE; Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE; Color: UNABLE TO DECODE. 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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