PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4555Lamp,incandescent

General Electric Co Miniature Lamp Products Dept Lighting Business Group · NSN 6240-00-954-5499 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-954-5499 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-954-5499. Primary manufacturer part number: 4555.
Features
  • Lamp,incandescent — FSC 6240
  • Light Intensity Distribution Feature: PARABOLIC REFLECTOR
  • Voltage Rating: 115.000 VOLTS NOMINAL
  • Bulb Style: PAR (PARABOLIC, ALUMINIZED REFLECTOR)
  • Filament Heavy Duty Service Rating: NOT RATED
  • Rated Average Life: HOURS
  • Base Style: TWO SCREW TERMINALS
  • Bulb Light Transmission Characteristic: TRANSPARENT
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-954-5499, 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 Co Miniature Lamp Products Dept Lighting Business Group. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-00-954-5499
Primary Part Number4555
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGeneral Electric Co Miniature Lamp Products Dept Lighting Business Group
StatusACTIVE
Light Intensity Distribution FeaturePARABOLIC REFLECTOR
Voltage Rating115.000 VOLTS NOMINAL
Bulb StylePAR (PARABOLIC, ALUMINIZED REFLECTOR)
Filament Heavy Duty Service RatingNOT RATED
Rated Average LifeHOURS
Base StyleTWO SCREW TERMINALS
Bulb Light Transmission CharacteristicTRANSPARENT
Wattage Rating1000.000 WATTS
Light Output Rating600000.000 BEAM CANDLEPOWER NOMINAL SINGLE RATING
Average Life Rating in Hours25.0
Specification/standard Data08108-4555 MANUFACTURERS STANDARD
Current Rating for Which Designed100.000 AMPERES NOMINAL
Nondefinitive Spec/std Data2 TYPE
Features ProvidedHEAT RESISTANT GLASS
Emitted Light CharacteristicCOLORLESS
Bulb DesignatorPAR-64
Filament DesignationCC-13
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5365-00-197-52592100-1464631PC33 INTERCHANGEABLE
Spacer,ring
Naval Ship Systems Command
5960-00-760-08654552 INTERCHANGEABLE
Electron Tube
Photonis Defense Inc Dba Photonis Defense Inc
2920-01-076-4389 INTERCHANGEABLE
Drive,engine,electrical Starter
4420-01-135-68594555 INTERCHANGEABLE
Heat Exchanger,shipboard
Howell Laboratories Inc Dba Howell Laboratories Inc
5120-01-174-4048004555 INTERCHANGEABLE
Wrench,compression
Bauer Compressors, Inc.
5945-01-218-5428LS-7721 INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation
6625-01-565-19964555 INTERCHANGEABLE
Test Clip,minigrab,
Fluke Electronics Corp
Cross-Reference Index
Part NumberManufacturer
4555 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
MS25242-4555 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
4555 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
WL50 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
4555 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
Related Parts
5365-00-197-5259INTERCHANGEABLE
SPACER,RING
2100-1464631PC33
5960-00-760-0865INTERCHANGEABLE
ELECTRON TUBE
4552
2920-01-076-4389INTERCHANGEABLE
DRIVE,ENGINE,ELECTRICAL STARTER
4420-01-135-6859INTERCHANGEABLE
HEAT EXCHANGER,SHIPBOARD
4555
5120-01-174-4048INTERCHANGEABLE
WRENCH,COMPRESSION
004555
5945-01-218-5428INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
LS-7721
6625-01-565-1996INTERCHANGEABLE
TEST CLIP,MINIGRAB,
4555

Frequently Asked Questions

What is NSN 6240-00-954-5499?

NSN 6240-00-954-5499 is a Lamp,incandescent, manufactured by General Electric Co Miniature Lamp Products Dept Lighting Business Group, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-954-5499?

NSN 6240-00-954-5499 has 5 cross-referenced part numbers: 4555 (General Electric Co Miniature Lamp Products Dept Lighting Business Group), MS25242-4555 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 4555 (American National Standards Institute Incorporated Dba American National Standards Institute), WL50 (Federal Specifications Promulgated by General Services Administration Washington DC), 4555 (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps).

What NSN replaces 6240-00-954-5499?

There are 7 known substitutes for 6240-00-954-5499: 5365-00-197-5259, 5960-00-760-0865, 2920-01-076-4389 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4555?

Key specifications for 4555: Light Intensity Distribution Feature: PARABOLIC REFLECTOR; Voltage Rating: 115.000 VOLTS NOMINAL; Bulb Style: PAR (PARABOLIC, ALUMINIZED REFLECTOR); Filament Heavy Duty Service Rating: NOT RATED. 18 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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