PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

DFYLamp,incandescent

Gte Products Corp Sylvania Miniature Lighting Div · NSN 6240-00-504-2389 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-504-2389 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-504-2389. Primary manufacturer part number: DFY.
Features
  • Lamp,incandescent — FSC 6240
  • Filament Designation: C-13D
  • Voltage Rating: 115.000 VOLTS MINIMUM AND 120.000 VOLTS MAXIMUM
  • Rated Average Life: HOURS
  • Bulb Style: T (TUBULAR)
  • Burning Position: BASE DOWN
  • Features Provided: HEAT RESISTANT GLASS
  • Wattage Rating: 1000.000 WATTS
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-504-2389, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Gte Products Corp Sylvania Miniature Lighting Div. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6240-00-504-2389
Primary Part NumberDFY
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGte Products Corp Sylvania Miniature Lighting Div
StatusCANCELLED
Filament DesignationC-13D
Voltage Rating115.000 VOLTS MINIMUM AND 120.000 VOLTS MAXIMUM
Rated Average LifeHOURS
Bulb StyleT (TUBULAR)
Burning PositionBASE DOWN
Features ProvidedHEAT RESISTANT GLASS
Wattage Rating1000.000 WATTS
Color Temp in Deg Kelvin3250.0
Light Output Rating28000.000 LUMENS NOMINAL SINGLE RATING
Light Intensity Distribution FeatureOPAQUE END
Emitted Light CharacteristicCOLORLESS
Filament Heavy Duty Service RatingNOT RATED
Base StyleBELL AND HOWELL LARGE INDEXING RING
Average Life Rating in Hours25.0
Bulb DesignatorT-12
Bulb Light Transmission CharacteristicTRANSPARENT
Current Rating for Which Designed8.333 AMPERES MINIMUM AND 8.696 AMPERES MAXIMUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
4810-00-164-583926465 INTERCHANGEABLE
Seat,valve
Hamilton Sundstrand Corporation Dba Collins Aerospace
5950-00-421-07255M1066-002 INTERCHANGEABLE
Transformer,power Autotransforme
The Boeing Company Div Defense
1005-00-731-0869 INTERCHANGEABLE
Pin,firing
5950-00-787-204026465 INTERCHANGEABLE
Transformer,power
Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company
Cross-Reference Index
Part NumberManufacturer
DFY PRIMARY Gte Products Corp Sylvania Miniature Lighting Div (USA)
1MT12-5LR115V Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
DFY115-120V American National Standards Institute Incorporated Dba American National Standards Institute (USA)
PH1MT12-5LR120V General Electric Co Photo Lamp Dept (USA)
DFY Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
WL126 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
26465 Bell and Howell Phillipsburg Co Corporate Offices (USA)
Related Parts
4810-00-164-5839INTERCHANGEABLE
SEAT,VALVE
26465
5950-00-421-0725INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
5M1066-002
1005-00-731-0869INTERCHANGEABLE
PIN,FIRING
5950-00-787-2040INTERCHANGEABLE
TRANSFORMER,POWER
26465

Frequently Asked Questions

What is NSN 6240-00-504-2389?

NSN 6240-00-504-2389 is a Lamp,incandescent, manufactured by Gte Products Corp Sylvania Miniature Lighting Div, classified under FSC 6240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6240-00-504-2389?

NSN 6240-00-504-2389 has 7 cross-referenced part numbers: DFY (Gte Products Corp Sylvania Miniature Lighting Div), 1MT12-5LR115V (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps), DFY115-120V (American National Standards Institute Incorporated Dba American National Standards Institute), PH1MT12-5LR120V (General Electric Co Photo Lamp Dept), DFY (Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company) and 2 more.

What NSN replaces 6240-00-504-2389?

There are 4 known substitutes for 6240-00-504-2389: 4810-00-164-5839, 5950-00-421-0725, 1005-00-731-0869 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of DFY?

Key specifications for DFY: Filament Designation: C-13D; Voltage Rating: 115.000 VOLTS MINIMUM AND 120.000 VOLTS MAXIMUM; Rated Average Life: HOURS; Bulb Style: T (TUBULAR). 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-504-2389 still in active supply?

NSN 6240-00-504-2389 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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