PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

631-E428Voltmeter

Phaostron Instrument and Electronic Company · NSN 6625-01-294-2333 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-294-2333 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-294-2333. Primary manufacturer part number: 631-E428.
Features
  • Voltmeter — FSC 6625
  • 5 verified cross-references
  • Primary manufacturer: Phaostron Instrument and Electronic Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Voltmeter, cataloged under National Stock Number 6625-01-294-2333, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Phaostron Instrument and Electronic Company. This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameVoltmeter
FSC / FSG6625 — No Item Name Available (FSG 66)
ManufacturersPhaostron Instrument and Electronic Company (CAGE 77221); Metermaster Inc Metermod Div (CAGE 27197); Hamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030); Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging (CAGE 15309); E I L Instruments Inc (CAGE 18948)
Successor NSN6625-00-892-4555 — Probe,test
Technical Specifications
ParameterValue
NSN6625-01-294-2333
Primary Part Number631-E428
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerPhaostron Instrument and Electronic Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-948-0162 (77C707996P001)
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight7.6923 lbs
Cube0.0579 cu ft
Verified Substitutes 6
6625-00-892-45557209955P1 SUCCESSOR
Probe,test
Lockheed Martin Corporation Div Rms
6625-00-948-016277C707996P001 SUCCESSOR
Voltmeter
Lockheed Martin Corporation Div Rms
5895-01-089-78572532 SUCCESSOR
Divider,power,radio Frequency
Cinch Connectivity Solutions Inc
5945-00-615-2787609867PC12 INTERCHANGEABLE
Relay,thermal
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6625-00-821-5849363-161 INTERCHANGEABLE
Ammeter
Jewell Instruments Llc
5999-01-390-71986509644 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
631-E428 PRIMARY Phaostron Instrument and Electronic Company (USA)
MMI10339 Metermaster Inc Metermod Div (USA)
GS2468 Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
363 Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging (USA)
2532 E I L Instruments Inc (USA)
Related Parts
SUCCESSOR 6625-00-948-0162 Voltmeter · 77C707996P001
6625-00-892-4555SUCCESSOR
PROBE,TEST
7209955P1
5895-01-089-7857SUCCESSOR
DIVIDER,POWER,RADIO FREQUENCY
2532
5945-00-615-2787INTERCHANGEABLE
RELAY,THERMAL
609867PC12
6625-00-821-5849INTERCHANGEABLE
AMMETER
363-161
5999-01-390-7198INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
6509644

Frequently Asked Questions

What is NSN 6625-01-294-2333?

NSN 6625-01-294-2333 is a Voltmeter, manufactured by Phaostron Instrument and Electronic Company, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-294-2333?

NSN 6625-01-294-2333 has 5 cross-referenced part numbers: 631-E428 (Phaostron Instrument and Electronic Company), MMI10339 (Metermaster Inc Metermod Div), GS2468 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 363 (Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging), 2532 (E I L Instruments Inc).

What NSN replaces 6625-01-294-2333?

There are 6 known substitutes for 6625-01-294-2333: 6625-00-892-4555, 6625-00-948-0162, 5895-01-089-7857 and 3 more. Verify interchangeability with system specifications before substitution.

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