PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S53Indicator,sight,liquid

Eaton Aerospace Llc Div Fluid and Electrical Distribution Division · NSN 6680-00-857-2397 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-857-2397 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-857-2397. Primary manufacturer part number: S53.
Features
  • Indicator,sight,liquid — FSC 6680
  • Thread Direction: UNABLE TO DECODE
  • Nominal Thread Size: UNABLE TO DECODE
  • Style Designator: BULLS EYE
  • Furnished Data: LIQUID LEVEL
  • Surface Treatment: ANODIZE
  • Thread Series Designator: UNABLE TO DECODE
  • Maximum Temp Rating: 200.0 FAHRENHEIT DEGF
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-857-2397, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6680-00-857-2397
Primary Part NumberS53
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerEaton Aerospace Llc Div Fluid and Electrical Distribution Division
StatusCANCELLED
Thread DirectionUNABLE TO DECODE
Nominal Thread SizeUNABLE TO DECODE
Style DesignatorBULLS EYE
Furnished DataLIQUID LEVEL
Surface TreatmentANODIZE
Thread Series DesignatorUNABLE TO DECODE
Maximum Temp Rating200.0 FAHRENHEIT DEGF
Media for Which DesignedANY ACCEPTABLE
Sight Diameter0.562 INCHES NOMINAL IN
Data Furnishing MethodCLEAR WINDOW
Width Across Flats1.000 INCHES NOMINAL IN
End Connection TypeUNABLE TO DECODE
MaterialALUMINUM ALLOY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
6240-00-143-317235-502 INTERCHANGEABLE
Lamp,incandescent
Bae Systems Information and Electronic Systems Integration Inc.
6250-00-283-93834077 INTERCHANGEABLE
Lampholder
Westinghouse Electric Corp
6625-00-354-9709S53 INTERCHANGEABLE
Plug-in Unit,electrical-Electron
Tektronix, Inc.
5999-00-709-7891 INTERCHANGEABLE
Heater,thermal Release
6680-00-808-9023S50 INTERCHANGEABLE
Indicator,sight,liquid
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
5340-00-826-9333S53 INTERCHANGEABLE
Plunger,quick Release
Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier
6680-00-852-3600S54 INTERCHANGEABLE
Indicator,sight,liquid
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
6680-00-887-4449S53H INTERCHANGEABLE
Indicator,sight,liquid
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
5985-01-180-7412723113-1 INTERCHANGEABLE
Switch,radio Frequency Transmiss
Raytheon Company Div Rmd Strategic
6605-01-438-3988S-53 INTERCHANGEABLE
Compass,magnetic,mounted
Ritchie E S and Sons Inc
Cross-Reference Index
Part NumberManufacturer
S53 Aiw-Alton Inc (USA)
RI-011 Rhythm Industries Inc (USA)
RI-011-1 Rhythm Industries Inc (USA)
S53 PRIMARY Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
S53 Satair A/s (DNK)
6680-00-857-2397 PRIMARY Aiw-Alton Inc (USA)
Related Parts
6240-00-143-3172INTERCHANGEABLE
LAMP,INCANDESCENT
35-502
6250-00-283-9383INTERCHANGEABLE
LAMPHOLDER
4077
6625-00-354-9709INTERCHANGEABLE
PLUG-IN UNIT,ELECTRICAL-ELECTRON
S53
5999-00-709-7891INTERCHANGEABLE
HEATER,THERMAL RELEASE
6680-00-808-9023INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
S50
5340-00-826-9333INTERCHANGEABLE
PLUNGER,QUICK RELEASE
S53
6680-00-852-3600INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
S54
6680-00-887-4449INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
S53H
5985-01-180-7412INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
723113-1
6605-01-438-3988INTERCHANGEABLE
COMPASS,MAGNETIC,MOUNTED
S-53

Frequently Asked Questions

What is NSN 6680-00-857-2397?

NSN 6680-00-857-2397 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: cancelled.

What are the part numbers for NSN 6680-00-857-2397?

NSN 6680-00-857-2397 has 6 cross-referenced part numbers: S53 (Aiw-Alton Inc), RI-011 (Rhythm Industries Inc), RI-011-1 (Rhythm Industries Inc), S53 (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division), S53 (Satair A/s) and 1 more.

What NSN replaces 6680-00-857-2397?

There are 10 known substitutes for 6680-00-857-2397: 6240-00-143-3172, 6250-00-283-9383, 6625-00-354-9709 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S53?

Key specifications for S53: Thread Direction: UNABLE TO DECODE; Nominal Thread Size: UNABLE TO DECODE; Style Designator: BULLS EYE; Furnished Data: LIQUID LEVEL. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-00-857-2397 still in active supply?

NSN 6680-00-857-2397 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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