PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CF3DD/835/ECOLamp,fluorescent

Osram Sylvania Inc. · NSN 6240-01-463-5971 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-463-5971 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-463-5971. Primary manufacturer part number: CF3DD/835/ECO.
Features
  • Lamp,fluorescent — FSC 6240
  • Rated Average Life: HOURS
  • Bulb Diameter: 1.100 INCHES NOMINAL IN
  • Base Style: FOUR PIN INDEXING
  • Average Life Rating in Hours: 10000.0
  • Bulb Designator: T-4
  • Voltage Rating: 91.000 VOLTS NOMINAL
  • Bulb Style: T ("U" SHAPED TUBULAR)
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,fluorescent, cataloged under National Stock Number 6240-01-463-5971, 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 10 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-01-463-5971
Primary Part NumberCF3DD/835/ECO
Item NameLamp,fluorescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerOsram Sylvania Inc.
StatusACTIVE
Rated Average LifeHOURS
Bulb Diameter1.100 INCHES NOMINAL IN
Base StyleFOUR PIN INDEXING
Average Life Rating in Hours10000.0
Bulb DesignatorT-4
Voltage Rating91.000 VOLTS NOMINAL
Bulb StyleT ("U" SHAPED TUBULAR)
Environmental Attribute CodeCOMPACT FLUORESCENT LAMP (CFL) LIGHT BULBS - ENERGY STAR-LIGHTING - ENERGY EFFICIENT PRODUCTS
Wattage Rating13.000 WATTS
Emitted Light CharacteristicWHITE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5133-00-189-9265 INTERCHANGEABLE
Drill,twist
6140-00-283-1302VNC22 INTERCHANGEABLE
Battery,storage
Mobile Energy Products, Inc. Dba Electro Energy
5950-00-645-191720692 INTERCHANGEABLE
Transformer,audio Frequency
Freed Transformer Co
5961-01-073-430320692 INTERCHANGEABLE
Transistor
Tdk-Lambda Americas Inc. Div High Power Division
5365-01-227-4701 INTERCHANGEABLE
Spacer,hoist
5998-01-262-583820770 INTERCHANGEABLE
Circuit Card Assembly
Basic American Inc
Cross-Reference Index
Part NumberManufacturer
CF3DD/835/ECO Osram Sylvania Inc. (USA)
20692 Osram Sylvania Inc. (USA)
Related Parts
5133-00-189-9265INTERCHANGEABLE
DRILL,TWIST
6140-00-283-1302INTERCHANGEABLE
BATTERY,STORAGE
VNC22
5950-00-645-1917INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
20692
5961-01-073-4303INTERCHANGEABLE
TRANSISTOR
20692
5365-01-227-4701INTERCHANGEABLE
SPACER,HOIST
5998-01-262-5838INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
20770

Frequently Asked Questions

What is NSN 6240-01-463-5971?

NSN 6240-01-463-5971 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 6240-01-463-5971?

NSN 6240-01-463-5971 has 2 cross-referenced part numbers: CF3DD/835/ECO (Osram Sylvania Inc.), 20692 (Osram Sylvania Inc.).

What NSN replaces 6240-01-463-5971?

There are 6 known substitutes for 6240-01-463-5971: 5133-00-189-9265, 6140-00-283-1302, 5950-00-645-1917 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CF3DD/835/ECO?

Key specifications for CF3DD/835/ECO: Rated Average Life: HOURS; Bulb Diameter: 1.100 INCHES NOMINAL IN; Base Style: FOUR PIN INDEXING; Special Features: ENERGY SAVER; DULUX D ECOLOGIC; LOW MECURY. 12 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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