PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M-57Indicator,sight,liquid

Eaton Aerospace Llc Div Fluid and Electrical Distribution Division · NSN 6680-01-144-8984 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-144-8984 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-144-8984. Primary manufacturer part number: M-57.
Features
  • Indicator,sight,liquid — FSC 6680
  • Bolt Hole Quantity: UNABLE TO DECODE
  • Furnished Data: LIQUID LEVEL
  • Bolt Hole Diameter: UNABLE TO DECODE
  • Data Furnishing Method: INSCRIBED FULL
  • Media for Which Designed: OIL
  • Style Designator: HIGH PRESSURE, FLAT GLASS
  • Maximum Temp Rating: 185.0 FAHRENHEIT DEGF
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-144-8984, 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 9 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6680-01-144-8984
Primary Part NumberM-57
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerEaton Aerospace Llc Div Fluid and Electrical Distribution Division
StatusCANCELLED
Bolt Hole QuantityUNABLE TO DECODE
Furnished DataLIQUID LEVEL
Bolt Hole DiameterUNABLE TO DECODE
Data Furnishing MethodINSCRIBED FULL
Media for Which DesignedOIL
Style DesignatorHIGH PRESSURE, FLAT GLASS
Maximum Temp Rating185.0 FAHRENHEIT DEGF
End Connection TypeUNABLE TO DECODE
MaterialALUMINUM ALLOY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
2530-00-028-3343F8456 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
3010-00-161-017829B075 INTERCHANGEABLE
Coupling
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
3455-00-224-3667B94.19 TABLE 7 6X1/8X1 INTERCHANGEABLE
Cutter,milling,metal Slitting
American National Standards Institute Incorporated Dba American National Standards Institute
5905-00-482-8661 INTERCHANGEABLE
Resistor,fixed,wire Wound
4320-01-284-052557-0001 INTERCHANGEABLE
Pump Unit,centrifugal
Zoeller Company Dba Zoeller Pump Company
Cross-Reference Index
Part NumberManufacturer
M-57J Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
M-57 PRIMARY Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
Related Parts
2530-00-028-3343INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
F8456
3010-00-161-0178INTERCHANGEABLE
COUPLING
29B075
3455-00-224-3667INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
B94.19 TABLE 7 6X1/8X1
5905-00-482-8661INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
4320-01-284-0525INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
57-0001

Frequently Asked Questions

What is NSN 6680-01-144-8984?

NSN 6680-01-144-8984 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 6680-01-144-8984?

NSN 6680-01-144-8984 has 2 cross-referenced part numbers: M-57J (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division), M-57 (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division).

What NSN replaces 6680-01-144-8984?

There are 5 known substitutes for 6680-01-144-8984: 2530-00-028-3343, 3010-00-161-0178, 3455-00-224-3667 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M-57?

Key specifications for M-57: Overall Length: 0.340 INCHES NOMINAL IN; Bolt Hole Quantity: UNABLE TO DECODE; Furnished Data: LIQUID LEVEL; Bolt Hole Diameter: UNABLE TO DECODE. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-01-144-8984 still in active supply?

NSN 6680-01-144-8984 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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