PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20668Lamp,fluorescent

Osram Sylvania Inc. · NSN 6240-01-419-5369 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-419-5369 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-419-5369. Primary manufacturer part number: 20668.
Features
  • Lamp,fluorescent — FSC 6240
  • Voltage Rating: 100.000 VOLTS NOMINAL
  • Rated Average Life: HOURS
  • Base Style: FOUR PIN INDEXING
  • Bulb Style: T ("U" SHAPED TUBULAR)
  • Emitted Light Characteristic: WHITE
  • Wattage Rating: 18.000 WATTS
  • Bulb Designator: T-4
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,fluorescent, cataloged under National Stock Number 6240-01-419-5369, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Osram Sylvania Inc.. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 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
NSN6240-01-419-5369
Primary Part Number20668
Item NameLamp,fluorescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerOsram Sylvania Inc.
StatusACTIVE
Voltage Rating100.000 VOLTS NOMINAL
Rated Average LifeHOURS
Base StyleFOUR PIN INDEXING
Bulb StyleT ("U" SHAPED TUBULAR)
Emitted Light CharacteristicWHITE
Wattage Rating18.000 WATTS
Bulb DesignatorT-4
Average Life Rating in Hours10000.0
Bulb Diameter1.100 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-011-04990901171-9 INTERCHANGEABLE
Screw,machine
Agco Corp Parts Opn
5110-00-062-5874 INTERCHANGEABLE
Punch and Die,knockout
4210-00-136-215020-668 INTERCHANGEABLE
Tube Assembly,fire
Kidde Technologies, Inc Div Kidde Aerospace and Defense
3110-00-144-8993177002-93 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6240-00-155-7949 INTERCHANGEABLE
Lamp,incandescent
5133-00-189-9289DBE44B INTERCHANGEABLE
Drill,twist
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
3455-00-516-405819837 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5340-00-868-688520668 INTERCHANGEABLE
Cover,access
Cadillac Gage Textron Inc.
4730-01-013-97871-8KMMOO-SS INTERCHANGEABLE
Cross,pipe
Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
2910-01-047-650720668 INTERCHANGEABLE
Nozzle,fuel Injection
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Cross-Reference Index
Part NumberManufacturer
20668 Osram Sylvania Inc. (USA)
12870 General Electric Company Dba Ge (USA)
32418Q41K Technical Consumer Products, Inc. (USA)
F18DBX/SPX41/4P General Electric Company Dba Ge (USA)
CF18DD/E/841 Osram Sylvania Inc. (USA)
Related Parts
5305-00-011-0499INTERCHANGEABLE
SCREW,MACHINE
0901171-9
5110-00-062-5874INTERCHANGEABLE
PUNCH AND DIE,KNOCKOUT
4210-00-136-2150INTERCHANGEABLE
TUBE ASSEMBLY,FIRE
20-668
3110-00-144-8993INTERCHANGEABLE
BEARING,BALL,ANNULAR
177002-93
6240-00-155-7949INTERCHANGEABLE
LAMP,INCANDESCENT
5133-00-189-9289INTERCHANGEABLE
DRILL,TWIST
DBE44B
3455-00-516-4058INTERCHANGEABLE
REAMER,MACHINE
19837
5340-00-868-6885INTERCHANGEABLE
COVER,ACCESS
20668
4730-01-013-9787INTERCHANGEABLE
CROSS,PIPE
1-8KMMOO-SS
2910-01-047-6507INTERCHANGEABLE
NOZZLE,FUEL INJECTION
20668
5360-01-059-0883INTERCHANGEABLE
SPRING
2S5013
6680-01-091-7589INTERCHANGEABLE
GENERATOR,TACHOMETER
TG2138A

Frequently Asked Questions

What is NSN 6240-01-419-5369?

NSN 6240-01-419-5369 is a Lamp,fluorescent, manufactured by Osram Sylvania Inc., classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-01-419-5369?

NSN 6240-01-419-5369 has 5 cross-referenced part numbers: 20668 (Osram Sylvania Inc.), 12870 (General Electric Company Dba Ge), 32418Q41K (Technical Consumer Products, Inc.), F18DBX/SPX41/4P (General Electric Company Dba Ge), CF18DD/E/841 (Osram Sylvania Inc.).

What NSN replaces 6240-01-419-5369?

There are 12 known substitutes for 6240-01-419-5369: 5305-00-011-0499, 5110-00-062-5874, 4210-00-136-2150 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20668?

Key specifications for 20668: Voltage Rating: 100.000 VOLTS NOMINAL; Rated Average Life: HOURS; Base Style: FOUR PIN INDEXING; Bulb Style: T ("U" SHAPED TUBULAR). 11 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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