PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T6355978PC1Lamp,incandescent

General Electric Company · NSN 6240-00-155-7780 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-155-7780 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-155-7780. Primary manufacturer part number: T6355978PC1.
Features
  • Lamp,incandescent — FSC 6240
  • Light Intensity Distribution Feature: PARABOLIC REFLECTOR
  • Current Rating for Which Designed: 5.300 AMPERES NOMINAL
  • Filament Designation: 4CC-8
  • Rated Average Life: HOURS
  • Emitted Light Characteristic: WHITE
  • Bulb Light Transmission Characteristic: TRANSPARENT
  • Bulb Style: PAR (PARABOLIC, ALUMINIZED REFLECTOR)
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-155-7780, 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 Company. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-00-155-7780
Primary Part NumberT6355978PC1
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGeneral Electric Company
StatusACTIVE
Light Intensity Distribution FeaturePARABOLIC REFLECTOR
Current Rating for Which Designed5.300 AMPERES NOMINAL
Filament Designation4CC-8
Rated Average LifeHOURS
Emitted Light CharacteristicWHITE
Bulb Light Transmission CharacteristicTRANSPARENT
Bulb StylePAR (PARABOLIC, ALUMINIZED REFLECTOR)
Average Life Rating in Hours50.0
Filament Heavy Duty Service RatingNOT RATED
Bulb DesignatorPAR-46
Base StyleTWO SCREW TERMINALS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5930-00-272-12783-6018 INTERCHANGEABLE
Switch,push
Balkamp Inc
5330-00-405-9178080-000046 INTERCHANGEABLE
Gasket
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5905-00-539-23431JB3492-1 INTERCHANGEABLE
Resistor,adjustable
Westinghouse Electric Corp
5360-01-050-2948N04521 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
6625-01-087-73074521 INTERCHANGEABLE
Wattmeter
Bird Electronic Corporation Div Bird Electronic Corp
6220-01-190-32354521 INTERCHANGEABLE
Directional Light,vehicular
Federal-Mogul Corp Government Sales Dept
1005-01-328-2207 INTERCHANGEABLE
Barrel,shotgun
5315-01-617-1637 INTERCHANGEABLE
Pin,quick Release
Cross-Reference Index
Part NumberManufacturer
T6355978PC1 General Electric Company (USA)
424401PC6 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
4521 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
AN3128-4521 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
5930-00-272-1278INTERCHANGEABLE
SWITCH,PUSH
3-6018
5330-00-405-9178INTERCHANGEABLE
GASKET
080-000046
5905-00-539-2343INTERCHANGEABLE
RESISTOR,ADJUSTABLE
1JB3492-1
5360-01-050-2948INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
N04521
6625-01-087-7307INTERCHANGEABLE
WATTMETER
4521
6220-01-190-3235INTERCHANGEABLE
DIRECTIONAL LIGHT,VEHICULAR
4521
1005-01-328-2207INTERCHANGEABLE
BARREL,SHOTGUN
5315-01-617-1637INTERCHANGEABLE
PIN,QUICK RELEASE

Frequently Asked Questions

What is NSN 6240-00-155-7780?

NSN 6240-00-155-7780 is a Lamp,incandescent, manufactured by General Electric Company, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-155-7780?

NSN 6240-00-155-7780 has 4 cross-referenced part numbers: T6355978PC1 (General Electric Company), 424401PC6 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 4521 (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps), AN3128-4521 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 6240-00-155-7780?

There are 8 known substitutes for 6240-00-155-7780: 5930-00-272-1278, 5330-00-405-9178, 5905-00-539-2343 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T6355978PC1?

Key specifications for T6355978PC1: Light Intensity Distribution Feature: PARABOLIC REFLECTOR; Current Rating for Which Designed: 5.300 AMPERES NOMINAL; Filament Designation: 4CC-8; Rated Average Life: HOURS. 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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