PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-104Indicator,sight,liquid

Aalberts Integrated Piping Systems Americas, Inc. · NSN 6680-00-135-8940 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-135-8940 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-135-8940. Primary manufacturer part number: 20-104.
Features
  • Indicator,sight,liquid — FSC 6680
  • Guard Rod Quantity: 2
  • Material: COPPER ALLOY
  • Data Furnishing Method: CLEAR WINDOW
  • Media for Which Designed: WATER
  • Furnished Data: LIQUID LEVEL
  • Features Provided: COUPLING NUT
  • Style Designator: GAGE VALVE
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-135-8940, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Aalberts Integrated Piping Systems Americas, Inc.. Government technical data includes 9 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-135-8940
Primary Part Number20-104
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerAalberts Integrated Piping Systems Americas, Inc.
StatusACTIVE
Guard Rod Quantity2
MaterialCOPPER ALLOY
Data Furnishing MethodCLEAR WINDOW
Media for Which DesignedWATER
Furnished DataLIQUID LEVEL
Features ProvidedCOUPLING NUT
Style DesignatorGAGE VALVE
End Connection TypeUNABLE TO DECODE
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6920-00-025-6297 INTERCHANGEABLE
Roller
6685-00-057-1404J0642J-001 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
5305-00-206-9061CL4KHS INTERCHANGEABLE
Thumbscrew
Carr Lane Manufacturing Co
5133-00-228-135314750 INTERCHANGEABLE
Drill,twist
Viking Drill & Tool, Inc.
2520-00-388-4197M279X INTERCHANGEABLE
Spider,universal Joint,vehicular
Meritor Heavy Vehicle Systems, Llc
5999-00-455-484901-0102-0499 INTERCHANGEABLE
Wire Mesh,knitted
Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division
5310-00-467-9941 INTERCHANGEABLE
Nut,self-Locking,hexagon
3431-00-567-165113N24 INTERCHANGEABLE
Collet,welding Torch
Welding Nozzle Intl Inc
5940-00-983-6065 INTERCHANGEABLE
Terminal Board
5345-01-226-474920104 INTERCHANGEABLE
Strip
Cunico Corporation
Cross-Reference Index
Part NumberManufacturer
20-104 PRIMARY Aalberts Integrated Piping Systems Americas, Inc. (USA)
Related Parts
6920-00-025-6297INTERCHANGEABLE
ROLLER
6685-00-057-1404INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
J0642J-001
5305-00-206-9061INTERCHANGEABLE
THUMBSCREW
CL4KHS
5133-00-228-1353INTERCHANGEABLE
DRILL,TWIST
14750
2520-00-388-4197INTERCHANGEABLE
SPIDER,UNIVERSAL JOINT,VEHICULAR
M279X
5999-00-455-4849INTERCHANGEABLE
WIRE MESH,KNITTED
01-0102-0499
5310-00-467-9941INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
3431-00-567-1651INTERCHANGEABLE
COLLET,WELDING TORCH
13N24
5940-00-983-6065INTERCHANGEABLE
TERMINAL BOARD
5345-01-226-4749INTERCHANGEABLE
STRIP
20104
4820-01-232-7252INTERCHANGEABLE
DISK,VALVE
A7458.001.128
6515-01-322-4381INTERCHANGEABLE
TUBE,DRAINAGE,SURGICAL
20-104

Frequently Asked Questions

What is NSN 6680-00-135-8940?

NSN 6680-00-135-8940 is a Indicator,sight,liquid, manufactured by Aalberts Integrated Piping Systems Americas, Inc., classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-135-8940?

NSN 6680-00-135-8940 has 1 cross-referenced part number: 20-104 (Aalberts Integrated Piping Systems Americas, Inc.).

What NSN replaces 6680-00-135-8940?

There are 12 known substitutes for 6680-00-135-8940: 6920-00-025-6297, 6685-00-057-1404, 5305-00-206-9061 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-104?

Key specifications for 20-104: Guard Rod Quantity: 2; Material: COPPER ALLOY; Data Furnishing Method: CLEAR WINDOW; Media for Which Designed: WATER. 10 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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