PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

3-8200Indicator,sight,liquid

Ernst Flow Industries · NSN 6680-01-054-4390 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-054-4390 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-054-4390. Primary manufacturer part number: 3-8200.
Features
  • Indicator,sight,liquid — FSC 6680
  • Nominal Pipe Size for Which Designed: UNABLE TO DECODE
  • Media for Which Designed: OIL
  • Nominal Thread Size: UNABLE TO DECODE
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY THREAD SERIES DESIGNATOR,NOMINAL THREAD SIZE AND THREAD QUANTITY PER INCH
  • Surface Treatment: ZINC
  • Thread Quantity Per Inch: UNABLE TO DECODE
  • Style Designator: ANGLE PATTERN, SHIELDED FRONT OPENING
Applications
  • Applications requiring Steel construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-054-4390, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ernst Flow Industries. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-01-054-4390
Primary Part Number3-8200
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerErnst Flow Industries
StatusACTIVE
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Media for Which DesignedOIL
Nominal Thread SizeUNABLE TO DECODE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY THREAD SERIES DESIGNATOR,NOMINAL THREAD SIZE AND THREAD QUANTITY PER INCH
Surface TreatmentZINC
Thread Quantity Per InchUNABLE TO DECODE
Style DesignatorANGLE PATTERN, SHIELDED FRONT OPENING
Furnished DataLIQUID LEVEL
MaterialSTEEL
Thread Series DesignatorUNABLE TO DECODE
Data Furnishing MethodCLEAR WINDOW
Maximum Temp Rating225.0 FAHRENHEIT DEGF
Thread DirectionUNABLE TO DECODE
End Connection TypeUNABLE TO DECODE
Overall Diameter0.625 INCHES NOMINAL IN
Sight Height5.562 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2825-00-146-009938200 INTERCHANGEABLE
Head
Northrop Grumman Systems Corporation Div Marine Systems
5310-00-208-9411 INTERCHANGEABLE
Nut,plain,hexagon
5940-01-343-1259 INTERCHANGEABLE
Terminal,lug
6110-01-562-182038200 INTERCHANGEABLE
Panel,control,electrical-Electro
Exceltec Intl Corp
Cross-Reference Index
Part NumberManufacturer
3-8200 Ernst Flow Industries (USA)
J72078L6 Gas Equipment Engineering Corporation, the Dba Geeco (USA)
Related Parts
2825-00-146-0099INTERCHANGEABLE
HEAD
38200
5310-00-208-9411INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5940-01-343-1259INTERCHANGEABLE
TERMINAL,LUG
6110-01-562-1820INTERCHANGEABLE
PANEL,CONTROL,ELECTRICAL-ELECTRO
38200

Frequently Asked Questions

What is NSN 6680-01-054-4390?

NSN 6680-01-054-4390 is a Indicator,sight,liquid, manufactured by Ernst Flow Industries, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-054-4390?

NSN 6680-01-054-4390 has 2 cross-referenced part numbers: 3-8200 (Ernst Flow Industries), J72078L6 (Gas Equipment Engineering Corporation, the Dba Geeco).

What NSN replaces 6680-01-054-4390?

There are 4 known substitutes for 6680-01-054-4390: 2825-00-146-0099, 5310-00-208-9411, 5940-01-343-1259 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3-8200?

Key specifications for 3-8200: Nominal Pipe Size for Which Designed: UNABLE TO DECODE; Media for Which Designed: OIL; Nominal Thread Size: UNABLE TO DECODE; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY THREAD SERIES DESIGNATOR,NOMINAL THREAD SIZE AND THREAD QUANTITY PER INCH. 19 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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