PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1MG40FLLamp,incandescent

Westinghouse Electric Corp · NSN 6240-00-266-6227 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-266-6227 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-266-6227. Primary manufacturer part number: 1MG40FL.
Features
  • Lamp,incandescent — FSC 6240
  • Features Provided: HEAT RESISTANT GLASS
  • Bulb Style: G (GLOBULAR)
  • Bulb Light Transmission Characteristic: TRANSPARENT
  • Current Rating for Which Designed: 8.333 AMPERES NOMINAL
  • Light Center Length: 5.250 INCHES NOMINAL IN
  • Light Output Rating: 20000.000 LUMENS NOMINAL SINGLE RATING
  • Rated Average Life: HOURS
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-266-6227, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Westinghouse Electric Corp. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-00-266-6227
Primary Part Number1MG40FL
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerWestinghouse Electric Corp
StatusACTIVE
Features ProvidedHEAT RESISTANT GLASS
Bulb StyleG (GLOBULAR)
Bulb Light Transmission CharacteristicTRANSPARENT
Current Rating for Which Designed8.333 AMPERES NOMINAL
Light Center Length5.250 INCHES NOMINAL IN
Light Output Rating20000.000 LUMENS NOMINAL SINGLE RATING
Rated Average LifeHOURS
Emitted Light CharacteristicCOLORLESS
Bulb DesignatorG-40
Filament Heavy Duty Service RatingNOT RATED
Voltage Rating120.000 VOLTS NOMINAL
Base StyleMOGUL SCREW
Light Beam TypeFLOOD
Average Life Rating in Hours800.0
Wattage Rating1000.000 WATTS
Filament DesignationC-5
Burning PositionBASE DOWN TO HORIZONTAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3455-00-187-2578 INTERCHANGEABLE
File,rotary
1740-00-702-3941 INTERCHANGEABLE
Tractor,wheeled,aircraft Towing
3930-00-724-8146 INTERCHANGEABLE
Tractor,wheeled,warehouse
1740-00-865-9705 INTERCHANGEABLE
Tractor,wheeled,aircraft Towing
2590-01-187-2806 INTERCHANGEABLE
Cap,filler Opening
3020-01-258-9454 INTERCHANGEABLE
Gear,spur
5985-01-321-1329G40 INTERCHANGEABLE
Attenuator,special
Richardson Electronics Ltd
5330-01-444-0815G40 INTERCHANGEABLE
Gasket
Plenty Inc
6685-01-563-7078G40 INTERCHANGEABLE
Gage,pressure,dial Indicating
Blacoh Fluid Controls Inc
6760-01-714-5946G40 INTERCHANGEABLE
Case,photographic Equipment
Pelican Products, Inc. Dba Pelican Products Inc
Cross-Reference Index
Part NumberManufacturer
1MG40FL Westinghouse Electric Corp (USA)
1MG40FL120V General Electric Company (USA)
1MG40FL120V Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
1MG40FL120V Morning Star Industries Inc (USA)
1M/G40FL General Electric Company Dba Ge (USA)
1MG40FL Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
1MG40FL120V General Electric Co Lamp Division of Consumer Products Group (USA)
1MG40FL General Electric Company (USA)
G40 Pierce Co Inc the Sub of Avis Industrial Corp (USA)
G40 Winco, Inc. (USA)
Related Parts
3455-00-187-2578INTERCHANGEABLE
FILE,ROTARY
1740-00-702-3941INTERCHANGEABLE
TRACTOR,WHEELED,AIRCRAFT TOWING
3930-00-724-8146INTERCHANGEABLE
TRACTOR,WHEELED,WAREHOUSE
1740-00-865-9705INTERCHANGEABLE
TRACTOR,WHEELED,AIRCRAFT TOWING
2590-01-187-2806INTERCHANGEABLE
CAP,FILLER OPENING
3020-01-258-9454INTERCHANGEABLE
GEAR,SPUR
5985-01-321-1329INTERCHANGEABLE
ATTENUATOR,SPECIAL
G40
5330-01-444-0815INTERCHANGEABLE
GASKET
G40
6685-01-563-7078INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
G40
6760-01-714-5946INTERCHANGEABLE
CASE,PHOTOGRAPHIC EQUIPMENT
G40

Frequently Asked Questions

What is NSN 6240-00-266-6227?

NSN 6240-00-266-6227 is a Lamp,incandescent, manufactured by Westinghouse Electric Corp, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-266-6227?

NSN 6240-00-266-6227 has 10 cross-referenced part numbers: 1MG40FL (Westinghouse Electric Corp), 1MG40FL120V (General Electric Company), 1MG40FL120V (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps), 1MG40FL120V (Morning Star Industries Inc), 1M/G40FL (General Electric Company Dba Ge) and 5 more.

What NSN replaces 6240-00-266-6227?

There are 10 known substitutes for 6240-00-266-6227: 3455-00-187-2578, 1740-00-702-3941, 3930-00-724-8146 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1MG40FL?

Key specifications for 1MG40FL: Features Provided: HEAT RESISTANT GLASS; Bulb Style: G (GLOBULAR); Bulb Light Transmission Characteristic: TRANSPARENT; Current Rating for Which Designed: 8.333 AMPERES NOMINAL. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com