PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

403-04Indicator,sight,liquid

Ernst, John C & Co, Inc. · NSN 6680-00-530-0487 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-530-0487 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-530-0487. Primary manufacturer part number: 403-04.
Features
  • Indicator,sight,liquid — FSC 6680
  • Style Designator: GAGE VALVE
  • Furnished Data: LIQUID LEVEL
  • Maximum Working Pressure: 125.0 POUNDS PER SQUARE INCH (PSI) LBS
  • Material: COPPER ALLOY
  • Media for Which Designed: ANY ACCEPTABLE
  • Data Furnishing Method: CLEAR WINDOW
  • Thread Quantity Per Inch: UNABLE TO DECODE
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-530-0487, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ernst, John C & Co, Inc.. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6680-00-530-0487
Primary Part Number403-04
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerErnst, John C & Co, Inc.
StatusCANCELLED
Style DesignatorGAGE VALVE
Furnished DataLIQUID LEVEL
Maximum Working Pressure125.0 POUNDS PER SQUARE INCH (PSI) LBS
MaterialCOPPER ALLOY
Media for Which DesignedANY ACCEPTABLE
Data Furnishing MethodCLEAR WINDOW
Thread Quantity Per InchUNABLE TO DECODE
Thread Series DesignatorUNABLE TO DECODE
Nominal Thread SizeUNABLE TO DECODE
Features ProvidedDRAIN COCK
End Connection TypeUNABLE TO DECODE
Sight Height6.750 INCHES NOMINAL IN
Distance Between Mounting Facility Centers8.000 INCHES NOMINAL IN
Thread DirectionUNABLE TO DECODE
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Sight Diameter0.625 INCHES NOMINAL IN
Guard Rod Quantity2
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2915-00-098-9010 INTERCHANGEABLE
Distributor,engine
4720-00-145-6212P10-5535 INTERCHANGEABLE
Hose,preformed
Donaldson Company, Inc.
2520-00-340-212065A81D947 INTERCHANGEABLE
Cover,gearbox
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
5915-00-519-448830707 INTERCHANGEABLE
Filter,radio Frequency Interfere
Raytheon Company Dba Raytheon
9540-00-540-594110133-0701 INTERCHANGEABLE
Angle,structural
Transtar Metals Corp
5950-00-702-66258912002 INTERCHANGEABLE
Transformer,power
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
5945-00-929-481140304 INTERCHANGEABLE
Relay,electromagnetic
Silver King Refrigeration Inc.
5330-00-965-6951658320 INTERCHANGEABLE
Gasket
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
5995-01-083-6567 INTERCHANGEABLE
Cable Assembly,special Purpose,e
5133-01-095-6713 INTERCHANGEABLE
Drill,twist
Cross-Reference Index
Part NumberManufacturer
628 Crane Co Div Valve Div (USA)
403 Ernst, John C & Co, Inc. (USA)
403-04 PRIMARY Ernst, John C & Co, Inc. (USA)
Related Parts
2915-00-098-9010INTERCHANGEABLE
DISTRIBUTOR,ENGINE
4720-00-145-6212INTERCHANGEABLE
HOSE,PREFORMED
P10-5535
2520-00-340-2120INTERCHANGEABLE
COVER,GEARBOX
65A81D947
5915-00-519-4488INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
30707
9540-00-540-5941INTERCHANGEABLE
ANGLE,STRUCTURAL
10133-0701
5950-00-702-6625INTERCHANGEABLE
TRANSFORMER,POWER
8912002
5945-00-929-4811INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
40304
5330-00-965-6951INTERCHANGEABLE
GASKET
658320
5995-01-083-6567INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
5133-01-095-6713INTERCHANGEABLE
DRILL,TWIST
5340-01-235-9795INTERCHANGEABLE
HANDWHEEL
40304
5975-01-282-5484INTERCHANGEABLE
BUSHING,STRAIN RELIEF,CABLE
4030400

Frequently Asked Questions

What is NSN 6680-00-530-0487?

NSN 6680-00-530-0487 is a Indicator,sight,liquid, manufactured by Ernst, John C & Co, Inc., classified under FSC 6680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6680-00-530-0487?

NSN 6680-00-530-0487 has 3 cross-referenced part numbers: 628 (Crane Co Div Valve Div), 403 (Ernst, John C & Co, Inc.), 403-04 (Ernst, John C & Co, Inc.).

What NSN replaces 6680-00-530-0487?

There are 12 known substitutes for 6680-00-530-0487: 2915-00-098-9010, 4720-00-145-6212, 2520-00-340-2120 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 403-04?

Key specifications for 403-04: Style Designator: GAGE VALVE; Furnished Data: LIQUID LEVEL; Maximum Working Pressure: 125.0 POUNDS PER SQUARE INCH (PSI) LBS; Material: COPPER ALLOY. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-00-530-0487 still in active supply?

NSN 6680-00-530-0487 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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