PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-89Indicator,sight,liquid

Eaton Aerospace Llc Div Fluid and Electrical Distribution Division · NSN 6680-00-027-2972 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-027-2972 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-027-2972. Primary manufacturer part number: S-89.
Features
  • Indicator,sight,liquid — FSC 6680
  • Thread Class: UNABLE TO DECODE
  • Thread Series Designator: UNABLE TO DECODE
  • Nominal Thread Size: UNABLE TO DECODE
  • Flange Outside Diameter: 1.870 INCHES NOMINAL IN
  • End Connection Type: UNABLE TO DECODE
  • Style Designator: TANK PATTERN, FLANGED
  • Nominal Pipe Size for Which Designed: UNABLE TO DECODE
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-027-2972, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Eaton Aerospace Llc Div Fluid and Electrical Distribution Division. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-027-2972
Primary Part NumberS-89
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerEaton Aerospace Llc Div Fluid and Electrical Distribution Division
StatusACTIVE
Thread ClassUNABLE TO DECODE
Thread Series DesignatorUNABLE TO DECODE
Nominal Thread SizeUNABLE TO DECODE
Flange Outside Diameter1.870 INCHES NOMINAL IN
End Connection TypeUNABLE TO DECODE
Style DesignatorTANK PATTERN, FLANGED
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Furnished DataLIQUID LEVEL
Surface TreatmentANODIZE
Sight Diameter0.620 INCHES NOMINAL IN
Data Furnishing MethodCLEAR WINDOW
Thread Quantity Per InchUNABLE TO DECODE
MaterialALUMINUM ALLOY
Media for Which DesignedOIL
Thread DirectionUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5331-01-097-8242803-1385721-8-4 INTERCHANGEABLE
O-Ring
Naval Sea Systems Command
5905-01-148-3240S89 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
State Electronics Parts Corp.
5331-01-246-3902MS28775-231 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
S-89 PRIMARY Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
Related Parts
5331-01-097-8242INTERCHANGEABLE
O-RING
803-1385721-8-4
5905-01-148-3240INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
S89
5331-01-246-3902INTERCHANGEABLE
O-RING
MS28775-231

Frequently Asked Questions

What is NSN 6680-00-027-2972?

NSN 6680-00-027-2972 is a Indicator,sight,liquid, manufactured by Eaton Aerospace Llc Div Fluid and Electrical Distribution Division, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-027-2972?

NSN 6680-00-027-2972 has 1 cross-referenced part number: S-89 (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division).

What NSN replaces 6680-00-027-2972?

There are 3 known substitutes for 6680-00-027-2972: 5331-01-097-8242, 5905-01-148-3240, 5331-01-246-3902. Verify interchangeability with system specifications before substitution.

What are the specifications of S-89?

Key specifications for S-89: Thread Class: UNABLE TO DECODE; Thread Series Designator: UNABLE TO DECODE; Nominal Thread Size: UNABLE TO DECODE; Flange Outside Diameter: 1.870 INCHES NOMINAL IN. 16 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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