PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

502-0Indicator,sight,liquid

Ernst & Whitney Pressure Products Inc · NSN 6680-00-526-8366 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-526-8366 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-526-8366. Primary manufacturer part number: 502-0.
Features
  • Indicator,sight,liquid — FSC 6680
  • Thread Direction: UNABLE TO DECODE
  • Data Furnishing Method: CLEAR WINDOW
  • Style Designator: ANGLE PATTERN, SHIELDED FRONT OPENING
  • Thread Series Designator: UNABLE TO DECODE
  • Nominal Thread Size: UNABLE TO DECODE
  • Features Provided: PORT SEAL CAP
  • Material: COPPER ALLOY
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-526-8366, 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 & Whitney Pressure Products Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 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
NSN6680-00-526-8366
Primary Part Number502-0
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerErnst & Whitney Pressure Products Inc
StatusACTIVE
Thread DirectionUNABLE TO DECODE
Data Furnishing MethodCLEAR WINDOW
Style DesignatorANGLE PATTERN, SHIELDED FRONT OPENING
Thread Series DesignatorUNABLE TO DECODE
Nominal Thread SizeUNABLE TO DECODE
Features ProvidedPORT SEAL CAP
MaterialCOPPER ALLOY
Furnished DataLIQUID LEVEL
End Connection TypeUNABLE TO DECODE
Thread Quantity Per InchUNABLE TO DECODE
Media for Which DesignedOIL
Sight Height0.688 INCHES NOMINAL IN
Overall Diameter0.750 INCHES NOMINAL IN
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2995-00-013-3711DS-934406 INTERCHANGEABLE
Sleeve,selector
Eaton Aerospace, Llc Dba Jackson South
5120-00-017-8307J5260 INTERCHANGEABLE
Bar,adapter Set
Stanley Black & Decker, Inc.
2840-00-097-883215201 INTERCHANGEABLE
Ferrule,rear
Williams International Co., L.l.c.
3110-00-100-0230389 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
2915-00-166-4957 INTERCHANGEABLE
Rotor,fuel Pump
4730-00-185-1460128ESM10007-11 INTERCHANGEABLE
Elbow,flange to Tube
Northrop Grumman Systems Corporation
3020-00-273-3770G151 INTERCHANGEABLE
Gear,spur
Altra Industrial Motion Corp.
5310-00-359-11925260 INTERCHANGEABLE
Nut,plain,hexagon
Mitsubishi Caterpillar Forklift America, Inc
6210-00-438-2221 INTERCHANGEABLE
Light,indicator
5355-00-454-6020G151 INTERCHANGEABLE
Knob
Northrop Grumman Systems Corporation
Cross-Reference Index
Part NumberManufacturer
502-0 Ernst & Whitney Pressure Products Inc (USA)
5330431 National Oil Well Dba Iec Baylor (USA)
5330431 General Motors Corp Delco Products Div Machine Control Systems (USA)
G151-1 Ldi Industries, Inc. Dba Ldi Industries Inc (USA)
15201 Apache Corp Gits Bros Mfg Co (USA)
526-0 Essex Brass Corporation (USA)
G151 Ldi Industries, Inc. Dba Ldi Industries Inc (USA)
Related Parts
2995-00-013-3711INTERCHANGEABLE
SLEEVE,SELECTOR
DS-934406
5120-00-017-8307INTERCHANGEABLE
BAR,ADAPTER SET
J5260
2840-00-097-8832INTERCHANGEABLE
FERRULE,REAR
15201
3110-00-100-0230INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
389
2915-00-166-4957INTERCHANGEABLE
ROTOR,FUEL PUMP
4730-00-185-1460INTERCHANGEABLE
ELBOW,FLANGE TO TUBE
128ESM10007-11
3020-00-273-3770INTERCHANGEABLE
GEAR,SPUR
G151
5310-00-359-1192INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5260
6210-00-438-2221INTERCHANGEABLE
LIGHT,INDICATOR
5355-00-454-6020INTERCHANGEABLE
KNOB
G151
5360-00-481-0231INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
15201
1377-00-488-6870INTERCHANGEABLE
CARTRIDGE,POWDER ACTUATED TOOL

Frequently Asked Questions

What is NSN 6680-00-526-8366?

NSN 6680-00-526-8366 is a Indicator,sight,liquid, manufactured by Ernst & Whitney Pressure Products Inc, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-526-8366?

NSN 6680-00-526-8366 has 7 cross-referenced part numbers: 502-0 (Ernst & Whitney Pressure Products Inc), 5330431 (National Oil Well Dba Iec Baylor), 5330431 (General Motors Corp Delco Products Div Machine Control Systems), G151-1 (Ldi Industries, Inc. Dba Ldi Industries Inc), 15201 (Apache Corp Gits Bros Mfg Co) and 2 more.

What NSN replaces 6680-00-526-8366?

There are 12 known substitutes for 6680-00-526-8366: 2995-00-013-3711, 5120-00-017-8307, 2840-00-097-8832 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 502-0?

Key specifications for 502-0: Thread Direction: UNABLE TO DECODE; Data Furnishing Method: CLEAR WINDOW; Style Designator: ANGLE PATTERN, SHIELDED FRONT OPENING; Thread Series Designator: 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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