PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CM8639Lamp,incandescent

Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron · NSN 6240-00-072-0352 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-072-0352 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-072-0352. Primary manufacturer part number: CM8639.
Features
  • Lamp,incandescent — FSC 6240
  • Bulb Designator: T-1 1/4
  • Specification/standard Data: 08108-8639 MANUFACTURERS STANDARD
  • Emitted Light Characteristic: WHITE
  • Base Style: KNURLED SCREW (KOLLSMAN)
  • Voltage Rating: 6.000 VOLTS NOMINAL
  • Filament Heavy Duty Service Rating: NOT RATED
  • Wattage Rating: 1.200 WATTS
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-072-0352, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron. Government technical data includes 15 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6240-00-072-0352
Primary Part NumberCM8639
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerChicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
StatusCANCELLED
Bulb DesignatorT-1 1/4
Specification/standard Data08108-8639 MANUFACTURERS STANDARD
Emitted Light CharacteristicWHITE
Base StyleKNURLED SCREW (KOLLSMAN)
Voltage Rating6.000 VOLTS NOMINAL
Filament Heavy Duty Service RatingNOT RATED
Wattage Rating1.200 WATTS
Bulb StyleT (TUBULAR)
Light Output Rating0.630 BEAM CANDLEPOWER NOMINAL SINGLE RATING
Rated Average LifeHOURS
Light Center Length0.330 INCHES NOMINAL IN
Filament DesignationC-2R
Bulb Light Transmission CharacteristicTRANSPARENT
Current Rating for Which Designed0.200 AMPERES NOMINAL
Average Life Rating in Hours1000.0
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
4920-00-097-54948639 INTERCHANGEABLE
Sleeve Socket
Hydratight Operations Inc
9320-00-224-46818639 INTERCHANGEABLE
Rubber Sheet,solid
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
5935-00-258-6045276-1213P1 INTERCHANGEABLE
Connector,plug,electrical
Raytheon Company Dba Raytheon Co
5999-00-570-23408639 INTERCHANGEABLE
Contact,electrical
Te Connectivity Corporation
1620-00-766-6107 INTERCHANGEABLE
Lever,landing Gear
5960-00-903-5425 INTERCHANGEABLE
Electron Tube
6685-01-572-15018639 INTERCHANGEABLE
Transmitter,pressure
Lockheed Martin Corporation
6150-01-658-56888639 INTERCHANGEABLE
Wiring Harness
Amera Trail Inc
Cross-Reference Index
Part NumberManufacturer
5452A116 Lenox Instrument Co., Inc. (USA)
319926-123 Bausch and Lomb Inc (USA)
12318020 Bae Systems Information and Electronic Systems Integration Inc. (USA)
CM8639 PRIMARY Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
8639 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
Related Parts
4920-00-097-5494INTERCHANGEABLE
SLEEVE SOCKET
8639
9320-00-224-4681INTERCHANGEABLE
RUBBER SHEET,SOLID
8639
5935-00-258-6045INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
276-1213P1
5999-00-570-2340INTERCHANGEABLE
CONTACT,ELECTRICAL
8639
1620-00-766-6107INTERCHANGEABLE
LEVER,LANDING GEAR
5960-00-903-5425INTERCHANGEABLE
ELECTRON TUBE
6685-01-572-1501INTERCHANGEABLE
TRANSMITTER,PRESSURE
8639
6150-01-658-5688INTERCHANGEABLE
WIRING HARNESS
8639

Frequently Asked Questions

What is NSN 6240-00-072-0352?

NSN 6240-00-072-0352 is a Lamp,incandescent, manufactured by Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron, classified under FSC 6240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6240-00-072-0352?

NSN 6240-00-072-0352 has 5 cross-referenced part numbers: 5452A116 (Lenox Instrument Co., Inc.), 319926-123 (Bausch and Lomb Inc), 12318020 (Bae Systems Information and Electronic Systems Integration Inc.), CM8639 (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron), 8639 (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps).

What NSN replaces 6240-00-072-0352?

There are 8 known substitutes for 6240-00-072-0352: 4920-00-097-5494, 9320-00-224-4681, 5935-00-258-6045 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CM8639?

Key specifications for CM8639: Bulb Designator: T-1 1/4; Specification/standard Data: 08108-8639 MANUFACTURERS STANDARD; Emitted Light Characteristic: WHITE; Base Style: KNURLED SCREW (KOLLSMAN). 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-072-0352 still in active supply?

NSN 6240-00-072-0352 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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