PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S29Indicator,sight,liquid

Eaton Aerospace Llc Div Fluid and Electrical Distribution Division · NSN 6680-00-857-2509 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-857-2509 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-857-2509. Primary manufacturer part number: S29.
Features
  • Indicator,sight,liquid — FSC 6680
  • Width Across Flats: 1.625 INCHES NOMINAL IN
  • Thread Series Designator: UNABLE TO DECODE
  • Material: ALUMINUM ALLOY
  • Media for Which Designed: OIL
  • Furnished Data: LIQUID LEVEL
  • Nominal Thread Size: UNABLE TO DECODE
  • Features Provided: REFLECTOR
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-857-2509, 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 16 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-857-2509
Primary Part NumberS29
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerEaton Aerospace Llc Div Fluid and Electrical Distribution Division
StatusACTIVE
Width Across Flats1.625 INCHES NOMINAL IN
Thread Series DesignatorUNABLE TO DECODE
MaterialALUMINUM ALLOY
Media for Which DesignedOIL
Furnished DataLIQUID LEVEL
Nominal Thread SizeUNABLE TO DECODE
Features ProvidedREFLECTOR
Style DesignatorBULLS EYE
Surface TreatmentANODIZE
Thread Quantity Per InchUNABLE TO DECODE
Data Furnishing MethodCLEAR WINDOW
Thread ClassUNABLE TO DECODE
Sight Diameter1.156 INCHES NOMINAL IN
Thread DirectionUNABLE TO DECODE
End Connection TypeUNABLE TO DECODE
Maximum Temp Rating300.0 FAHRENHEIT DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5120-00-116-2920S29 INTERCHANGEABLE
Die,crimping Tool
Souriau Usa, Inc. Dba Souriau Usa Inc
5305-00-333-9501S29 INTERCHANGEABLE
Screw,machine
Contraves Inc
4330-00-420-7557BT-839 W/G-401 INTERCHANGEABLE
Filter Element,fluid
Baldwin Filters
3455-00-982-5114 INTERCHANGEABLE
Cutter,milling,end
4820-01-433-7533S-29 INTERCHANGEABLE
Valve,gate
Nibco Inc
Cross-Reference Index
Part NumberManufacturer
S29 PRIMARY Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
Related Parts
5120-00-116-2920INTERCHANGEABLE
DIE,CRIMPING TOOL
S29
5305-00-333-9501INTERCHANGEABLE
SCREW,MACHINE
S29
4330-00-420-7557INTERCHANGEABLE
FILTER ELEMENT,FLUID
BT-839 W/G-401
3455-00-982-5114INTERCHANGEABLE
CUTTER,MILLING,END
4820-01-433-7533INTERCHANGEABLE
VALVE,GATE
S-29

Frequently Asked Questions

What is NSN 6680-00-857-2509?

NSN 6680-00-857-2509 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 6680-00-857-2509?

NSN 6680-00-857-2509 has 1 cross-referenced part number: S29 (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division).

What NSN replaces 6680-00-857-2509?

There are 5 known substitutes for 6680-00-857-2509: 5120-00-116-2920, 5305-00-333-9501, 4330-00-420-7557 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S29?

Key specifications for S29: Width Across Flats: 1.625 INCHES NOMINAL IN; Overall Height: 1.020 INCHES NOMINAL IN; Thread Series Designator: UNABLE TO DECODE; Material: ALUMINUM ALLOY. 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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