PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

291Lamp,incandescent

Lamp Industry for Use with Industry Designations and Abbreviations for Lamps · NSN 6240-00-186-6597 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-186-6597 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-186-6597. Primary manufacturer part number: 291.
Features
  • Lamp,incandescent — FSC 6240
  • Emitted Light Characteristic: COLORLESS
  • Filament Heavy Duty Service Rating: NOT RATED
  • Bulb Designator: T-3 1/4
  • Light Center Length: 0.750 INCHES NOMINAL IN
  • Bulb Light Transmission Characteristic: TRANSPARENT
  • Current Rating for Which Designed: 0.170 AMPERES NOMINAL
  • 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 6240-00-186-6597, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Lamp Industry for Use with Industry Designations and Abbreviations for Lamps. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-00-186-6597
Primary Part Number291
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerLamp Industry for Use with Industry Designations and Abbreviations for Lamps
StatusACTIVE
Emitted Light CharacteristicCOLORLESS
Filament Heavy Duty Service RatingNOT RATED
Bulb DesignatorT-3 1/4
Light Center Length0.750 INCHES NOMINAL IN
Bulb Light Transmission CharacteristicTRANSPARENT
Current Rating for Which Designed0.170 AMPERES NOMINAL
Rated Average LifeHOURS
Voltage Rating2.900 VOLTS NOMINAL
Filament DesignationC-2R
Bulb StyleT (TUBULAR)
Average Life Rating in Hours200.0
Wattage Rating0.493 WATTS
Base StyleMINIATURE BAYONET
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-00-117-9086 INTERCHANGEABLE
Seal,valve
5910-00-192-5403 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
Cross-Reference Index
Part NumberManufacturer
291 PRIMARY Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
30-100316-1 Gte Products Corp Entertainment Products Group (USA)
A9320-5 PRIMARY Raytheon Company Dba Raytheon Co (USA)
7936820-429 General Motors Llc Dba General Motors (USA)
87-0107 Finnigan Corporation (USA)
291 General Electric Company (USA)
291 General Electric Co Lamp Division of Consumer Products Group (USA)
7936820-429 General Motors Llc Dba General Motors Llc (USA)
291 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
Related Parts
5330-00-117-9086INTERCHANGEABLE
SEAL,VALVE
5910-00-192-5403INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC

Frequently Asked Questions

What is NSN 6240-00-186-6597?

NSN 6240-00-186-6597 is a Lamp,incandescent, manufactured by Lamp Industry for Use with Industry Designations and Abbreviations for Lamps, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-186-6597?

NSN 6240-00-186-6597 has 9 cross-referenced part numbers: 291 (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps), 30-100316-1 (Gte Products Corp Entertainment Products Group), A9320-5 (Raytheon Company Dba Raytheon Co), 7936820-429 (General Motors Llc Dba General Motors), 87-0107 (Finnigan Corporation) and 4 more.

What NSN replaces 6240-00-186-6597?

There are 2 known substitutes for 6240-00-186-6597: 5330-00-117-9086, 5910-00-192-5403. Verify interchangeability with system specifications before substitution.

What are the specifications of 291?

Key specifications for 291: Emitted Light Characteristic: COLORLESS; Filament Heavy Duty Service Rating: NOT RATED; Bulb Designator: T-3 1/4; Light Center Length: 0.750 INCHES NOMINAL IN. 14 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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