PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-75-49Indicator,sight,liquid

Fulton Boiler Works Inc · NSN 6680-01-289-4803 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-289-4803 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-289-4803. Primary manufacturer part number: 4-75-49.
Features
  • Indicator,sight,liquid — FSC 6680
  • Sight Height: 9.250 INCHES NOMINAL IN
  • Material: COPPER ALLOY
  • Furnished Data: LIQUID LEVEL
  • Style Designator: GAGE VALVE
  • Data Furnishing Method: CLEAR WINDOW
  • 2 verified cross-references
  • Primary manufacturer: Fulton Boiler Works Inc
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-289-4803, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Fulton Boiler Works Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-01-289-4803
Primary Part Number4-75-49
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerFulton Boiler Works Inc
StatusACTIVE
Sight Height9.250 INCHES NOMINAL IN
MaterialCOPPER ALLOY
Furnished DataLIQUID LEVEL
Style DesignatorGAGE VALVE
Data Furnishing MethodCLEAR WINDOW
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
9540-00-294-9938 INTERCHANGEABLE
Beam,structural
1660-00-328-153243070 INTERCHANGEABLE
Frame Assembly,control Box
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
5365-00-483-086543071 INTERCHANGEABLE
Plug,machine Thread
Arrow Pneumatics Inc
4730-00-766-8200 INTERCHANGEABLE
Coupling Half,quick Disconnect
4210-00-963-67446-1-746 PC8 INTERCHANGEABLE
Hose Assembly,nonmetallic,fire F
W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center
9540-01-071-1358 INTERCHANGEABLE
Beam,structural
4730-01-108-237747549 INTERCHANGEABLE
Nipple,pipe
Fluid Conditioning Products, Inc.
3110-01-109-5252 INTERCHANGEABLE
Cone and Rollers,tapered Roller
5985-01-294-448011440546 INTERCHANGEABLE
Waveguide Assembly
Us Army Aviation and Missile Command
5962-01-325-805743070 INTERCHANGEABLE
Microcircuit,digital
Vaponics Inc
Cross-Reference Index
Part NumberManufacturer
4-30-70 Fulton Boiler Works Inc (USA)
4-75-49 PRIMARY Fulton Boiler Works Inc (USA)
Related Parts
9540-00-294-9938INTERCHANGEABLE
BEAM,STRUCTURAL
1660-00-328-1532INTERCHANGEABLE
FRAME ASSEMBLY,CONTROL BOX
43070
5365-00-483-0865INTERCHANGEABLE
PLUG,MACHINE THREAD
43071
4730-00-766-8200INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4210-00-963-6744INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC,FIRE F
6-1-746 PC8
9540-01-071-1358INTERCHANGEABLE
BEAM,STRUCTURAL
4730-01-108-2377INTERCHANGEABLE
NIPPLE,PIPE
47549
3110-01-109-5252INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
5985-01-294-4480INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
11440546
5962-01-325-8057INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
43070

Frequently Asked Questions

What is NSN 6680-01-289-4803?

NSN 6680-01-289-4803 is a Indicator,sight,liquid, manufactured by Fulton Boiler Works Inc, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-289-4803?

NSN 6680-01-289-4803 has 2 cross-referenced part numbers: 4-30-70 (Fulton Boiler Works Inc), 4-75-49 (Fulton Boiler Works Inc).

What NSN replaces 6680-01-289-4803?

There are 10 known substitutes for 6680-01-289-4803: 9540-00-294-9938, 1660-00-328-1532, 5365-00-483-0865 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-75-49?

Key specifications for 4-75-49: Sight Height: 9.250 INCHES NOMINAL IN; Material: COPPER ALLOY; Furnished Data: LIQUID LEVEL; Style Designator: GAGE VALVE. 5 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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