PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20683Lamp,fluorescent

Osram Sylvania Inc. · NSN 6240-01-419-5274 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-419-5274 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-419-5274. Primary manufacturer part number: 20683.
Features
  • Lamp,fluorescent — FSC 6240
  • Bulb Diameter: 1.100 INCHES NOMINAL IN
  • Voltage Rating: 100.000 VOLTS NOMINAL
  • Base Style: FOUR PIN INDEXING
  • Wattage Rating: 18.000 WATTS
  • Average Life Rating in Hours: 10000.0
  • Rated Average Life: HOURS
  • Emitted Light Characteristic: WHITE
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,fluorescent, cataloged under National Stock Number 6240-01-419-5274, 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 4 commercial cross-references from 2 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
NSN6240-01-419-5274
Primary Part Number20683
Item NameLamp,fluorescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerOsram Sylvania Inc.
StatusACTIVE
Bulb Diameter1.100 INCHES NOMINAL IN
Voltage Rating100.000 VOLTS NOMINAL
Base StyleFOUR PIN INDEXING
Wattage Rating18.000 WATTS
Average Life Rating in Hours10000.0
Rated Average LifeHOURS
Emitted Light CharacteristicWHITE
Bulb StyleT ("U" SHAPED TUBULAR)
Bulb DesignatorT-4
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-031-8324 INTERCHANGEABLE
Retainer
4820-00-141-91801286-5 INTERCHANGEABLE
Valve Asy,fuel,sele
Hydro-Aire Aerospace Corp
5133-00-189-9274 INTERCHANGEABLE
Drill,twist
3120-00-337-6992 INTERCHANGEABLE
Bearing Assy
2815-00-416-1235 INTERCHANGEABLE
Head,cylinder
5950-00-467-1461ST5M1324-001 INTERCHANGEABLE
Transformer,power Autotransforme
The Boeing Company Div Defense
5920-01-059-08822S5012 INTERCHANGEABLE
Fuseholder Subassembly
Caterpillar Inc Div Caterpillar Defense
6150-01-175-610612865 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6130-01-292-077012865 INTERCHANGEABLE
Power Supply
Rantec Power Systems Inc. Dba Rantec Power Systems
6650-01-323-052612-865 INTERCHANGEABLE
Collimator,infrared
Rockwell Collins Optronics Inc. Div Collins Aerospace - Mission Systems
Cross-Reference Index
Part NumberManufacturer
20683 Osram Sylvania Inc. (USA)
CF18DD/E/827 Osram Sylvania Inc. (USA)
F18DBX/SPX27/4P General Electric Company Dba Ge (USA)
12865 General Electric Company Dba Ge (USA)
Related Parts
6685-00-031-8324INTERCHANGEABLE
RETAINER
4820-00-141-9180INTERCHANGEABLE
VALVE ASY,FUEL,SELE
1286-5
5133-00-189-9274INTERCHANGEABLE
DRILL,TWIST
3120-00-337-6992INTERCHANGEABLE
BEARING ASSY
2815-00-416-1235INTERCHANGEABLE
HEAD,CYLINDER
5950-00-467-1461INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
ST5M1324-001
5920-01-059-0882INTERCHANGEABLE
FUSEHOLDER SUBASSEMBLY
2S5012
6150-01-175-6106INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
12865
6130-01-292-0770INTERCHANGEABLE
POWER SUPPLY
12865
6650-01-323-0526INTERCHANGEABLE
COLLIMATOR,INFRARED
12-865
3040-01-510-1208INTERCHANGEABLE
SHAFT,SHOULDERED
X20683
6640-01-732-7407INTERCHANGEABLE
SYRINGE,LABORATORY
82520

Frequently Asked Questions

What is NSN 6240-01-419-5274?

NSN 6240-01-419-5274 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 6240-01-419-5274?

NSN 6240-01-419-5274 has 4 cross-referenced part numbers: 20683 (Osram Sylvania Inc.), CF18DD/E/827 (Osram Sylvania Inc.), F18DBX/SPX27/4P (General Electric Company Dba Ge), 12865 (General Electric Company Dba Ge).

What NSN replaces 6240-01-419-5274?

There are 12 known substitutes for 6240-01-419-5274: 6685-00-031-8324, 4820-00-141-9180, 5133-00-189-9274 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20683?

Key specifications for 20683: Bulb Diameter: 1.100 INCHES NOMINAL IN; Voltage Rating: 100.000 VOLTS NOMINAL; Base Style: FOUR PIN INDEXING; Wattage Rating: 18.000 WATTS. 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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