PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MDE321421-1REVAVarmeter

The Boeing Company Div Defense · NSN 6625-00-856-6819 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-856-6819 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-856-6819. Primary manufacturer part number: MDE321421-1REVA.
Features
  • Varmeter — FSC 6625
  • Mounting Facility Type and Quantity: 1 FLANGE AND 3 UNTHREADED HOLE(S)
  • Color: UNABLE TO DECODE
  • Dial Scale Marking Color: WHITE SINGLE INDICATOR SINGLE RANGE
  • Phase: THREE
  • Circuit Attachment Method and Quantity: 6 THREADED STUD
  • Measurement Range: +0.0 TO 50.0 KILOVARS SINGLE INDICATOR SINGLE RANGE
  • Frequency Rating: 400.0 HERTZ NOMINAL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Varmeter, cataloged under National Stock Number 6625-00-856-6819, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-856-6819
Primary Part NumberMDE321421-1REVA
Item NameVarmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Mounting Facility Type and Quantity1 FLANGE AND 3 UNTHREADED HOLE(S)
ColorUNABLE TO DECODE
Dial Scale Marking ColorWHITE SINGLE INDICATOR SINGLE RANGE
PhaseTHREE
Circuit Attachment Method and Quantity6 THREADED STUD
Measurement Range+0.0 TO 50.0 KILOVARS SINGLE INDICATOR SINGLE RANGE
Frequency Rating400.0 HERTZ NOMINAL
Operating Voltage Rating in Volts120.0 AC MINIMUM
Circuit Current for Which DesignedAC
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Hole Diameter0.120 INCHES NOMINAL IN
Installation DesignPANEL
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Mounting Facility Type and Quantity1 FLANGE AND 3 UNTHREADED HOLE(S)
ColorUNABLE TO DECODE
Dial Scale Marking ColorWHITE SINGLE INDICATOR SINGLE RANGE
PhaseTHREE
Circuit Attachment Method and Quantity6 THREADED STUD
Measurement Range+0.0 TO 50.0 KILOVARS SINGLE INDICATOR SINGLE RANGE
Frequency Rating400.0 HERTZ NOMINAL
Operating Voltage Rating in Volts120.0 AC MINIMUM
Circuit Current for Which DesignedAC
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Hole Diameter0.120 INCHES NOMINAL IN
Installation DesignPANEL
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeYN
Weight1.2400 lbs
Cube0.0875 cu ft
Verified Substitutes 12
3431-00-018-832610N30 INTERCHANGEABLE
Collet Body,welding Torch
Esab Group, Inc., the Dba Esab Welding and Cutting Products Div Esab Welding and Cuttng
2940-00-071-910970122C1 INTERCHANGEABLE
Head,fluid Filter
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
5945-00-249-9835L218324-1 INTERCHANGEABLE
Relay,electromagnetic
Raytheon Company Dba Raytheon Co
5331-00-292-05802-006 N304-75 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5342-00-511-670912290-7 INTERCHANGEABLE
Latch,fastener
Hickok Waekon Llc
2805-00-517-991118201A INTERCHANGEABLE
Valve,poppet,engine
Brinkley Technology Group Llc Dba Hercules Manufacturing
5935-00-870-70501-820-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
5930-00-923-38771820-1 INTERCHANGEABLE
Switch,pressure
Dwyer Instruments Inc
5305-00-957-6263MS35190-210 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5330-01-078-8864 INTERCHANGEABLE
Gasket
Cross-Reference Index
Part NumberManufacturer
265-131 Jewell Instruments Llc (USA)
122.907 Phaostron Instrument and Electronic Company (USA)
18-201 Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp. (USA)
421-072 Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging (USA)
MDE321421-1REVA PRIMARY The Boeing Company Div Defense (USA)
Related Parts
3431-00-018-8326INTERCHANGEABLE
COLLET BODY,WELDING TORCH
10N30
2940-00-071-9109INTERCHANGEABLE
HEAD,FLUID FILTER
70122C1
5945-00-249-9835INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
L218324-1
5331-00-292-0580INTERCHANGEABLE
O-RING
2-006 N304-75
5342-00-511-6709INTERCHANGEABLE
LATCH,FASTENER
12290-7
2805-00-517-9911INTERCHANGEABLE
VALVE,POPPET,ENGINE
18201A
5935-00-870-7050INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
1-820-1
5930-00-923-3877INTERCHANGEABLE
SWITCH,PRESSURE
1820-1
5305-00-957-6263INTERCHANGEABLE
SCREW,MACHINE
MS35190-210
5330-01-078-8864INTERCHANGEABLE
GASKET
4810-01-120-7839INTERCHANGEABLE
ARM AND FLOAT ASSEMBLY
26513-1
7690-01-195-7689INTERCHANGEABLE
LABEL
18201

Frequently Asked Questions

What is NSN 6625-00-856-6819?

NSN 6625-00-856-6819 is a Varmeter, manufactured by The Boeing Company Div Defense, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-856-6819?

NSN 6625-00-856-6819 has 5 cross-referenced part numbers: 265-131 (Jewell Instruments Llc), 122.907 (Phaostron Instrument and Electronic Company), 18-201 (Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp.), 421-072 (Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging), MDE321421-1REVA (The Boeing Company Div Defense).

What NSN replaces 6625-00-856-6819?

There are 12 known substitutes for 6625-00-856-6819: 3431-00-018-8326, 2940-00-071-9109, 5945-00-249-9835 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MDE321421-1REVA?

Key specifications for MDE321421-1REVA: End Item Identification: SUPPORT EQUIPMENT, T-37 AIRCRAFT; SUPPORT EQUIPMENT, T-38 AIRCRAFT; SUPPORT EQUIPMENT, F-4 AIRCRAFT; F4N AIRCRAFT; Mounting Facility Type and Quantity: 1 FLANGE AND 3 UNTHREADED HOLE(S); Color: UNABLE TO DECODE; Dial Scale Marking Color: WHITE SINGLE INDICATOR SINGLE RANGE. 28 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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