PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1833-520127Voltmeter

Custom Metering Company Inc · NSN 6625-00-649-4001 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-649-4001 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-649-4001. Primary manufacturer part number: 1833-520127.
Features
  • Voltmeter — FSC 6625
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.875 INCHES NOMINAL IN
  • Scale Selection Method: TERMINAL
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Style Designator: RECTANGULAR FLUSH MTG
  • Movement Suspension Method: JEWEL PIVOT BASE
  • Movement Type: MOVING IRON VANE
  • Meter Depth Behind Mounting Flange: 1.031 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-649-4001, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Custom Metering Company Inc. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-649-4001
Primary Part Number1833-520127
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerCustom Metering Company Inc
StatusCANCELLED
Center to Center Distance Between Mounting Facilities Parallel to Width1.875 INCHES NOMINAL IN
Scale Selection MethodTERMINAL
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Style DesignatorRECTANGULAR FLUSH MTG
Movement Suspension MethodJEWEL PIVOT BASE
Movement TypeMOVING IRON VANE
Meter Depth Behind Mounting Flange1.031 INCHES NOMINAL IN
Dial Scale Marking ColorYELLOW SINGLE INDICATOR SINGLE RANGE
Operating Voltage Rating in Volts250.0 AC NOMINAL
ColorUNABLE TO DECODE
FSC Application DataTEST SET,ELECT. EQUIP.
Meter Body Diameter Behind Mounting Flange2.234 INCHES NOMINAL IN
MaterialSTEEL
Indicator TypeDIAL W/POINTER
Circuit Attachment Method and Quantity2 THREADED STUD
Measurement Range+0.0 TO 250.0 VOLTS, AC SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity4 SCREW AND 4 UNTHREADED HOLE(S)
Furnished Items and QuantityNUT 8; LOCKWASHER 6; SEAL 1
Pointer ColorYELLOW SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Sensitivity Rating250.0 VOLTS
Scale Graduation TypeNONLINEAR SINGLE INDICATOR SINGLE RANGE
Power SourceEXTERNAL
Dielectric Withstanding Voltage in Volts1500.0
Frequency Response Range+0.000 TO 400.000 HERTZ
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5999-01-049-9418 (62451)
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Verified Substitutes 3
No Item Name Available
5999-01-049-941862451 SUCCESSOR
Contact Assembly,electrical
Mcculloch Corp
8125-01-497-2325100209 INTERCHANGEABLE
Cap,screw,bottle and Jar
Fluid Defense Systems, Llc Dba Fluid Defense Systems
Cross-Reference Index
Part NumberManufacturer
1833-520127 PRIMARY Custom Metering Company Inc (USA)
1833-520127 Solartron Electronics Inc Weston Instruments Div (USA)
727-19340 Phaostron Instrument and Electronic Company (USA)
62451 Textron Lycoming Inc Williamsport Plant (USA)
Related Parts
SUCCESSOR 5999-01-049-9418 Contact Assembly,electrical · 62451
6625-00-544-9046SUCCESSOR
NO ITEM NAME AVAILABLE
8125-01-497-2325INTERCHANGEABLE
CAP,SCREW,BOTTLE AND JAR
100209

Frequently Asked Questions

What is NSN 6625-00-649-4001?

NSN 6625-00-649-4001 is a Voltmeter, manufactured by Custom Metering Company Inc, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-649-4001?

NSN 6625-00-649-4001 has 4 cross-referenced part numbers: 1833-520127 (Custom Metering Company Inc), 1833-520127 (Solartron Electronics Inc Weston Instruments Div), 727-19340 (Phaostron Instrument and Electronic Company), 62451 (Textron Lycoming Inc Williamsport Plant).

What NSN replaces 6625-00-649-4001?

There are 3 known substitutes for 6625-00-649-4001: 6625-00-544-9046, 5999-01-049-9418, 8125-01-497-2325. Verify interchangeability with system specifications before substitution.

What are the specifications of 1833-520127?

Key specifications for 1833-520127: Center to Center Distance Between Mounting Facilities Parallel to Width: 1.875 INCHES NOMINAL IN; Scale Selection Method: TERMINAL; Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE; Style Designator: RECTANGULAR FLUSH MTG. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-649-4001 still in active supply?

NSN 6625-00-649-4001 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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