PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12866Lamp,fluorescent

General Electric Company Dba Ge · NSN 6240-01-419-5277 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-419-5277 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-419-5277. Primary manufacturer part number: 12866.
Features
  • Lamp,fluorescent — FSC 6240
  • Rated Average Life: HOURS
  • Voltage Rating: 100.000 VOLTS NOMINAL
  • Average Life Rating in Hours: 10000.0
  • Bulb Designator: T-4
  • Wattage Rating: 18.000 WATTS
  • Bulb Style: T ("U" SHAPED TUBULAR)
  • Base Style: FOUR PIN INDEXING
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,fluorescent, cataloged under National Stock Number 6240-01-419-5277, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is General Electric Company Dba Ge. 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
NSN6240-01-419-5277
Primary Part Number12866
Item NameLamp,fluorescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGeneral Electric Company Dba Ge
StatusACTIVE
Rated Average LifeHOURS
Voltage Rating100.000 VOLTS NOMINAL
Average Life Rating in Hours10000.0
Bulb DesignatorT-4
Wattage Rating18.000 WATTS
Bulb StyleT ("U" SHAPED TUBULAR)
Base StyleFOUR PIN INDEXING
Emitted Light CharacteristicWHITE
Bulb Diameter1.100 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-045-8567207-11 INTERCHANGEABLE
Coil,radio Frequency
Wilco Corp
3110-00-100-6156MS19059-2420 INTERCHANGEABLE
Ball,bearing
American Society for Testing and Materials Dba Astm International
5133-00-189-9246 INTERCHANGEABLE
Drill,twist
5950-00-355-9999SM-D-97385 INTERCHANGEABLE
Transformer,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5950-00-433-396112866 INTERCHANGEABLE
Transformer,power Autotransforme
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
7510-00-465-099412866 INTERCHANGEABLE
Pencil
Dixon Ticonderoga Co
4720-00-693-4806102999 INTERCHANGEABLE
Hose,preformed
Allianz Sweeper Company
2520-00-868-689120711 INTERCHANGEABLE
Universal Joint,vehicular
Cadillac Gage Textron Inc.
5850-00-896-4044 INTERCHANGEABLE
Lock Ring
5330-00-922-518820711 INTERCHANGEABLE
Packing,preformed
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
Cross-Reference Index
Part NumberManufacturer
12866 General Electric Company Dba Ge (USA)
CF18DD/E/830 Osram Sylvania Inc. (USA)
F18DBX/SPX30/4P General Electric Company Dba Ge (USA)
20711 Osram Sylvania Inc. (USA)
32418Q30K Technical Consumer Products, Inc. (USA)
Related Parts
5950-00-045-8567INTERCHANGEABLE
COIL,RADIO FREQUENCY
207-11
3110-00-100-6156INTERCHANGEABLE
BALL,BEARING
MS19059-2420
5133-00-189-9246INTERCHANGEABLE
DRILL,TWIST
5950-00-355-9999INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
SM-D-97385
5950-00-433-3961INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
12866
7510-00-465-0994INTERCHANGEABLE
PENCIL
12866
4720-00-693-4806INTERCHANGEABLE
HOSE,PREFORMED
102999
2520-00-868-6891INTERCHANGEABLE
UNIVERSAL JOINT,VEHICULAR
20711
5850-00-896-4044INTERCHANGEABLE
LOCK RING
5330-00-922-5188INTERCHANGEABLE
PACKING,PREFORMED
20711
7320-01-167-7589INTERCHANGEABLE
CUTTER BLADE,ONION RING
20711
6150-01-176-2073INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
12866

Frequently Asked Questions

What is NSN 6240-01-419-5277?

NSN 6240-01-419-5277 is a Lamp,fluorescent, manufactured by General Electric Company Dba Ge, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-01-419-5277?

NSN 6240-01-419-5277 has 5 cross-referenced part numbers: 12866 (General Electric Company Dba Ge), CF18DD/E/830 (Osram Sylvania Inc.), F18DBX/SPX30/4P (General Electric Company Dba Ge), 20711 (Osram Sylvania Inc.), 32418Q30K (Technical Consumer Products, Inc.).

What NSN replaces 6240-01-419-5277?

There are 12 known substitutes for 6240-01-419-5277: 5950-00-045-8567, 3110-00-100-6156, 5133-00-189-9246 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12866?

Key specifications for 12866: Rated Average Life: HOURS; Voltage Rating: 100.000 VOLTS NOMINAL; Average Life Rating in Hours: 10000.0; Bulb Designator: T-4. 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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