PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M144Indicator,sight,liquid

Eaton Aerospace Llc Div Fluid and Electrical Distribution Division · NSN 6680-00-758-9330 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-758-9330 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-758-9330. Primary manufacturer part number: M144.
Features
  • Indicator,sight,liquid — FSC 6680
  • Width Across Flats: 1.060 INCHES NOMINAL IN
  • Thread Quantity Per Inch: UNABLE TO DECODE
  • Furnished Data: LIQUID LEVEL
  • Thread Direction: UNABLE TO DECODE
  • Thread Series Designator: UNABLE TO DECODE
  • Media for Which Designed: ANY ACCEPTABLE
  • Sight Diameter: 0.750 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-758-9330, 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 4 commercial cross-references from 3 manufacturers, 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
NSN6680-00-758-9330
Primary Part NumberM144
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerEaton Aerospace Llc Div Fluid and Electrical Distribution Division
StatusACTIVE
Width Across Flats1.060 INCHES NOMINAL IN
Thread Quantity Per InchUNABLE TO DECODE
Furnished DataLIQUID LEVEL
Thread DirectionUNABLE TO DECODE
Thread Series DesignatorUNABLE TO DECODE
Media for Which DesignedANY ACCEPTABLE
Sight Diameter0.750 INCHES NOMINAL IN
MaterialSTEEL
Maximum Working Pressure10000.0 POUNDS PER SQUARE INCH (PSI) LBS
Nominal Thread SizeUNABLE TO DECODE
Style DesignatorBULLS EYE
End Connection TypeUNABLE TO DECODE
Maximum Temp Rating500.0 FAHRENHEIT DEGF
Data Furnishing MethodCLEAR WINDOW
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-115-86905253 INTERCHANGEABLE
Thermometer,self-Indicating
Weksler Glass Thermometer Corp
1650-00-166-6108525-3 INTERCHANGEABLE
Plate,seal
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
4720-00-318-09638327951 INTERCHANGEABLE
Hose Assembly,nonmetallic
U S Army Tank Automotive Command Amsta-Im-Mm
4720-00-323-241347-150-186-5 INTERCHANGEABLE
Hose,air Duct
Bell Textron Inc
4320-00-431-1694N5-253 INTERCHANGEABLE
End Bell Assembly
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
2590-00-492-8128 INTERCHANGEABLE
Sleeve Trolley Asse
5935-00-534-77548900-0185-001 INTERCHANGEABLE
Connector,receptacle,electrical
Antenna Products Corporation Dba Antenna Products Corp
3110-00-554-5962 INTERCHANGEABLE
Bearing,ball,annular
5935-00-725-3166 INTERCHANGEABLE
Connector,receptacle,electrical
1340-00-861-99668831168 INTERCHANGEABLE
Warhead Section,762 Millimeter R
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament
Cross-Reference Index
Part NumberManufacturer
5253 Raytheon Company Div Rmd Strategic (USA)
M144 PRIMARY Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
M144 Satair A/s (DNK)
5253-251 Raytheon Company Div Rmd Strategic (USA)
Related Parts
6685-00-115-8690INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
5253
1650-00-166-6108INTERCHANGEABLE
PLATE,SEAL
525-3
4720-00-318-0963INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
8327951
4720-00-323-2413INTERCHANGEABLE
HOSE,AIR DUCT
47-150-186-5
4320-00-431-1694INTERCHANGEABLE
END BELL ASSEMBLY
N5-253
2590-00-492-8128INTERCHANGEABLE
SLEEVE TROLLEY ASSE
5935-00-534-7754INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
8900-0185-001
3110-00-554-5962INTERCHANGEABLE
BEARING,BALL,ANNULAR
5935-00-725-3166INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1340-00-861-9966INTERCHANGEABLE
WARHEAD SECTION,762 MILLIMETER R
8831168
5975-00-899-0235INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
74349A
5305-01-179-9001INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5253

Frequently Asked Questions

What is NSN 6680-00-758-9330?

NSN 6680-00-758-9330 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 6680-00-758-9330?

NSN 6680-00-758-9330 has 4 cross-referenced part numbers: 5253 (Raytheon Company Div Rmd Strategic), M144 (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division), M144 (Satair A/s), 5253-251 (Raytheon Company Div Rmd Strategic).

What NSN replaces 6680-00-758-9330?

There are 12 known substitutes for 6680-00-758-9330: 6685-00-115-8690, 1650-00-166-6108, 4720-00-318-0963 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M144?

Key specifications for M144: Width Across Flats: 1.060 INCHES NOMINAL IN; Thread Quantity Per Inch: UNABLE TO DECODE; Furnished Data: LIQUID LEVEL; Thread Direction: UNABLE TO DECODE. 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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