PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

589 MODIFIEDIndicator,sight,liquid

Lunkenheimer Co · NSN 6680-01-131-9679 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-131-9679 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-131-9679. Primary manufacturer part number: 589 MODIFIED.
Features
  • Indicator,sight,liquid — FSC 6680
  • Sight Height: 7.000 INCHES NOMINAL IN
  • End Connection Type: UNABLE TO DECODE
  • Thread Quantity Per Inch: UNABLE TO DECODE
  • Furnished Data: LIQUID LEVEL
  • Material: COPPER ALLOY
  • Data Furnishing Method: CLEAR WINDOW
  • Media for Which Designed: GASOLINE AND OIL
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-131-9679, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Lunkenheimer Co. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-01-131-9679
Primary Part Number589 MODIFIED
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerLunkenheimer Co
StatusACTIVE
Sight Height7.000 INCHES NOMINAL IN
End Connection TypeUNABLE TO DECODE
Thread Quantity Per InchUNABLE TO DECODE
Furnished DataLIQUID LEVEL
MaterialCOPPER ALLOY
Data Furnishing MethodCLEAR WINDOW
Media for Which DesignedGASOLINE AND OIL
Reference Number Differentiating CharacteristicsASDIFFERENTIATED BY DISTANCE BETWEEN MOUNTING CENTERS AND SIGHT HEIGHT
Thread Series DesignatorUNABLE TO DECODE
Style DesignatorGAGE VALVE
Nominal Thread SizeUNABLE TO DECODE
Maximum Working Pressure200.0 POUNDS PER SQUARE INCH (PSI) LBS
Distance Between Mounting Facility Centers8.000 INCHES NOMINAL IN
Sight Diameter0.750 INCHES NOMINAL IN
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Guard Rod Quantity3
Thread DirectionUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
9340-00-064-0018 INTERCHANGEABLE
Tubing,glass
6145-00-195-0137 INTERCHANGEABLE
Wire,electrical
5935-00-258-4449SM-C-125742 INTERCHANGEABLE
Cover,electrical Connector
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
8030-00-407-7604409 INTERCHANGEABLE
Sealing Compound
Uniseal Inc
5310-00-415-0069 INTERCHANGEABLE
Washer,flat
1680-00-540-9666665 INTERCHANGEABLE
Seat,aircraft
Ami Industries, Inc Div Utc Aerospace Systems
5306-00-693-7366 INTERCHANGEABLE
Bolt,internally Relieved Body
5915-00-824-4076589 INTERCHANGEABLE
Filter,band Pass
Bulova Technologies L.l.c. Dba Environmental Systems & Svcs
5306-01-058-5212 INTERCHANGEABLE
Bolt
3010-01-104-1186 INTERCHANGEABLE
Gearcase-Motor
Cross-Reference Index
Part NumberManufacturer
589 MODIFIED Lunkenheimer Co (USA)
589 Lunkenheimer Co (USA)
Related Parts
9340-00-064-0018INTERCHANGEABLE
TUBING,GLASS
6145-00-195-0137INTERCHANGEABLE
WIRE,ELECTRICAL
5935-00-258-4449INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
SM-C-125742
8030-00-407-7604INTERCHANGEABLE
SEALING COMPOUND
409
5310-00-415-0069INTERCHANGEABLE
WASHER,FLAT
1680-00-540-9666INTERCHANGEABLE
SEAT,AIRCRAFT
665
5306-00-693-7366INTERCHANGEABLE
BOLT,INTERNALLY RELIEVED BODY
5915-00-824-4076INTERCHANGEABLE
FILTER,BAND PASS
589
5306-01-058-5212INTERCHANGEABLE
BOLT
3010-01-104-1186INTERCHANGEABLE
GEARCASE-MOTOR
5342-01-163-0782INTERCHANGEABLE
BRACKET,DECK,WINCH
589
3455-01-168-2542INTERCHANGEABLE
CUTTER,MILLING,END
41358

Frequently Asked Questions

What is NSN 6680-01-131-9679?

NSN 6680-01-131-9679 is a Indicator,sight,liquid, manufactured by Lunkenheimer Co, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-131-9679?

NSN 6680-01-131-9679 has 2 cross-referenced part numbers: 589 MODIFIED (Lunkenheimer Co), 589 (Lunkenheimer Co).

What NSN replaces 6680-01-131-9679?

There are 12 known substitutes for 6680-01-131-9679: 9340-00-064-0018, 6145-00-195-0137, 5935-00-258-4449 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 589 MODIFIED?

Key specifications for 589 MODIFIED: Sight Height: 7.000 INCHES NOMINAL IN; End Connection Type: UNABLE TO DECODE; Thread Quantity Per Inch: UNABLE TO DECODE; Furnished Data: LIQUID LEVEL. 17 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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