PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L1-31 7-8SIndicator,sight,liquid

Henry Technologies, Inc. · NSN 6680-00-850-3966 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-850-3966 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-850-3966. Primary manufacturer part number: L1-31 7-8S.
Features
  • Indicator,sight,liquid — FSC 6680
  • Sight Diameter: 0.750 INCHES NOMINAL IN
  • Features Provided: PORT SEAL CAP
  • End Connection Type: UNABLE TO DECODE
  • Material: COPPER ALLOY
  • Media for Which Designed: ANY ACCEPTABLE
  • Reference Number Differentiating Characteristics: ASPP,ASNX,ABKW,ABHP
  • Style Designator: DOUBLE PORT W/CAPS
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-850-3966, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Henry Technologies, Inc.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6680-00-850-3966
Primary Part NumberL1-31 7-8S
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerHenry Technologies, Inc.
StatusCANCELLED
Sight Diameter0.750 INCHES NOMINAL IN
Features ProvidedPORT SEAL CAP
End Connection TypeUNABLE TO DECODE
MaterialCOPPER ALLOY
Media for Which DesignedANY ACCEPTABLE
Reference Number Differentiating CharacteristicsASPP,ASNX,ABKW,ABHP
Style DesignatorDOUBLE PORT W/CAPS
Tube Outside Diameter for Which DesignedUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
4730-00-422-878682-135 INTERCHANGEABLE
Packing Nut
Itw Industrial Finishing Dba Binks Devilbiss
5330-00-641-21815865 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
6680-00-842-0498 INTERCHANGEABLE
Indicator,sight,liquid
4720-01-140-9827 INTERCHANGEABLE
Hose,nonmetallic
Cross-Reference Index
Part NumberManufacturer
L1-31 7-8S Henry Technologies, Inc. (USA)
L1-35 Henry Technologies, Inc. (USA)
L1-31 Henry Technologies, Inc. (USA)
Related Parts
4730-00-422-8786INTERCHANGEABLE
PACKING NUT
82-135
5330-00-641-2181INTERCHANGEABLE
SEAL,PLAIN ENCASED
5865
6680-00-842-0498INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
4720-01-140-9827INTERCHANGEABLE
HOSE,NONMETALLIC

Frequently Asked Questions

What is NSN 6680-00-850-3966?

NSN 6680-00-850-3966 is a Indicator,sight,liquid, manufactured by Henry Technologies, Inc., classified under FSC 6680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6680-00-850-3966?

NSN 6680-00-850-3966 has 3 cross-referenced part numbers: L1-31 7-8S (Henry Technologies, Inc.), L1-35 (Henry Technologies, Inc.), L1-31 (Henry Technologies, Inc.).

What NSN replaces 6680-00-850-3966?

There are 4 known substitutes for 6680-00-850-3966: 4730-00-422-8786, 5330-00-641-2181, 6680-00-842-0498 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of L1-31 7-8S?

Key specifications for L1-31 7-8S: Overall Length: 3.000 INCHES NOMINAL IN; Overall Height: 3.125 INCHES NOMINAL IN; Sight Diameter: 0.750 INCHES NOMINAL IN; Features Provided: PORT SEAL CAP. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-00-850-3966 still in active supply?

NSN 6680-00-850-3966 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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