PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1866Lamp,incandescent

Inter-Market Inc · NSN 6240-00-924-7504 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-924-7504 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-924-7504. Primary manufacturer part number: 1866.
Features
  • Lamp,incandescent — FSC 6240
  • Emitted Light Characteristic: COLORLESS
  • Current Rating for Which Designed: 0.250 AMPERES NOMINAL
  • Wattage Rating: 4.095 WATTS
  • Bulb Designator: T-3 1/4
  • Base Style: MINIATURE BAYONET
  • Light Output Rating: 0.650 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
  • Bulb Style: T (TUBULAR)
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-924-7504, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Inter-Market Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 27 commercial cross-references from 22 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6240-00-924-7504
Primary Part Number1866
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerInter-Market Inc
StatusCANCELLED
Emitted Light CharacteristicCOLORLESS
Current Rating for Which Designed0.250 AMPERES NOMINAL
Wattage Rating4.095 WATTS
Bulb DesignatorT-3 1/4
Base StyleMINIATURE BAYONET
Light Output Rating0.650 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
Bulb StyleT (TUBULAR)
Average Life Rating in Hours5000.0
Light Center Length0.780 INCHES NOMINAL IN
Voltage Rating6.300 VOLTS NOMINAL
Bulb Light Transmission CharacteristicTRANSPARENT
Rated Average LifeHOURS
Filament Heavy Duty Service RatingNOT RATED
Filament DesignationC-2R
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-001-7973 INTERCHANGEABLE
Control,valve
5910-00-080-18900180-0045 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Agilent Technologies, Inc. Div Agilent Technologies Headquarters
5905-00-140-3170 INTERCHANGEABLE
Resistor Network,fixed,film
5330-00-173-3086H03-26 INTERCHANGEABLE
Gasket
Mako Compressors, Llc
5360-00-248-48131866 INTERCHANGEABLE
Spring,helical,compression
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5325-00-276-5999F51-1 INTERCHANGEABLE
Grommet,nonmetallic
Bae Systems Information and Electronic Systems Integration Inc.
5315-00-281-870611A7222 INTERCHANGEABLE
Key,machine
Napco International Llc Dba Napco International Inc
2040-00-385-8793 INTERCHANGEABLE
Box,stuffing
6930-00-421-21402899 INTERCHANGEABLE
Indicator Simulated
Lilbern Design of Virginia Llc
6685-00-486-82781866 INTERCHANGEABLE
Gear Train Assembly,indicator
Mission Systems Davenport Inc.
Cross-Reference Index
Part NumberManufacturer
1866 Inter-Market Inc (USA)
1866 Shelly Associates Inc. (USA)
LTX1866 Lamptronix Co Ltd (USA)
1866T3-1-4 Zf Industrieantriebe Witten Gmbh (DEU)
1866 Dialight Corporation (USA)
361292 Sierra Technologies Inc Garden City Div (USA)
1866T3-1-4 Dialight Corporation (USA)
L1000-8 Hamilton Sundstrand Corporation (USA)
1866 Communication Systems Div North American Philips Corp (USA)
65C82010C-14 Motorola Communications Group Parts Dept Div of Motorola Inc (USA)
1866 Cooper Industries Inc Champion Aviation Products (USA)
1866 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
PL1866 Precision Lamp Inc (USA)
W-L-00111 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1401363-5 Rca Corp Consumer Electronics (USA)
1866 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
BA10010-42 Lucent Technologies Inc Advanced Technology Systems (USA)
1866 Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
2899 Crown Audio, Inc. Dba Crown International (USA)
BA10010-42 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
6685-00-001-7973INTERCHANGEABLE
CONTROL,VALVE
5910-00-080-1890INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
0180-0045
5905-00-140-3170INTERCHANGEABLE
RESISTOR NETWORK,FIXED,FILM
5330-00-173-3086INTERCHANGEABLE
GASKET
H03-26
5360-00-248-4813INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1866
5325-00-276-5999INTERCHANGEABLE
GROMMET,NONMETALLIC
F51-1
5315-00-281-8706INTERCHANGEABLE
KEY,MACHINE
11A7222
2040-00-385-8793INTERCHANGEABLE
BOX,STUFFING
6930-00-421-2140INTERCHANGEABLE
INDICATOR SIMULATED
2899
6685-00-486-8278INTERCHANGEABLE
GEAR TRAIN ASSEMBLY,INDICATOR
1866
5950-00-528-4423INTERCHANGEABLE
COIL,RADIO FREQUENCY
3110-00-549-6524INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 6240-00-924-7504?

NSN 6240-00-924-7504 is a Lamp,incandescent, manufactured by Inter-Market Inc, classified under FSC 6240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6240-00-924-7504?

NSN 6240-00-924-7504 has 27 cross-referenced part numbers: 1866 (Inter-Market Inc), 1866 (Shelly Associates Inc.), LTX1866 (Lamptronix Co Ltd), 1866T3-1-4 (Zf Industrieantriebe Witten Gmbh), 1866 (Dialight Corporation) and 22 more.

What NSN replaces 6240-00-924-7504?

There are 12 known substitutes for 6240-00-924-7504: 6685-00-001-7973, 5910-00-080-1890, 5905-00-140-3170 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1866?

Key specifications for 1866: Emitted Light Characteristic: COLORLESS; Current Rating for Which Designed: 0.250 AMPERES NOMINAL; Wattage Rating: 4.095 WATTS; Bulb Designator: T-3 1/4. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-924-7504 still in active supply?

NSN 6240-00-924-7504 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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