PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

528 1-8Indicator,sight,liquid

Lunkenheimer Co · NSN 6680-00-580-4301 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-580-4301 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-580-4301. Primary manufacturer part number: 528 1-8.
Features
  • Indicator,sight,liquid — FSC 6680
  • Nominal Pipe Size for Which Designed: UNABLE TO DECODE
  • Style Designator: ANGLE PATTERN, SHIELDED FRONT OPENING
  • Material: COPPER ALLOY
  • Features Provided: PORT SEAL CAP
  • Nominal Thread Size: UNABLE TO DECODE
  • Sight Height: 1.625 INCHES NOMINAL IN
  • Surface Treatment: CADMIUM
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-580-4301, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Lunkenheimer Co. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-580-4301
Primary Part Number528 1-8
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerLunkenheimer Co
StatusACTIVE
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Style DesignatorANGLE PATTERN, SHIELDED FRONT OPENING
MaterialCOPPER ALLOY
Features ProvidedPORT SEAL CAP
Nominal Thread SizeUNABLE TO DECODE
Sight Height1.625 INCHES NOMINAL IN
Surface TreatmentCADMIUM
Media for Which DesignedOIL
Thread DirectionUNABLE TO DECODE
Thread ClassUNABLE TO DECODE
Thread Series DesignatorUNABLE TO DECODE
Overall Diameter0.719 INCHES NOMINAL IN
End Connection TypeUNABLE TO DECODE
Thread Quantity Per InchUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4720-00-020-317040538 INTERCHANGEABLE
Hose,preformed
Sullair Corp
5815-00-392-7852 INTERCHANGEABLE
Cover
Cross-Reference Index
Part NumberManufacturer
528 1-8 Lunkenheimer Co (USA)
Related Parts
4720-00-020-3170INTERCHANGEABLE
HOSE,PREFORMED
40538
5815-00-392-7852INTERCHANGEABLE
COVER

Frequently Asked Questions

What is NSN 6680-00-580-4301?

NSN 6680-00-580-4301 is a Indicator,sight,liquid, manufactured by Lunkenheimer Co, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-580-4301?

NSN 6680-00-580-4301 has 1 cross-referenced part number: 528 1-8 (Lunkenheimer Co).

What NSN replaces 6680-00-580-4301?

There are 2 known substitutes for 6680-00-580-4301: 4720-00-020-3170, 5815-00-392-7852. Verify interchangeability with system specifications before substitution.

What are the specifications of 528 1-8?

Key specifications for 528 1-8: Nominal Pipe Size for Which Designed: UNABLE TO DECODE; Style Designator: ANGLE PATTERN, SHIELDED FRONT OPENING; Material: COPPER ALLOY; Features Provided: PORT SEAL CAP. 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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