PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CM2181Lamp,incandescent

Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron · NSN 6240-00-949-8109 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-949-8109 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-949-8109. Primary manufacturer part number: CM2181.
Features
  • Lamp,incandescent — FSC 6240
  • Average Life Rating in Hours: 20000.0
  • Bulb Style: T (TUBULAR)
  • Bulb Designator: T-1 3/4
  • Wattage Rating: 1.260 WATTS
  • Emitted Light Characteristic: COLORLESS
  • Voltage Rating: 6.300 VOLTS NOMINAL
  • Specification/standard Data: 08108-2181D MANUFACTURERS STANDARD
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-949-8109, 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 29 commercial cross-references from 24 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
NSN6240-00-949-8109
Primary Part NumberCM2181
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerChicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
StatusCANCELLED
Average Life Rating in Hours20000.0
Bulb StyleT (TUBULAR)
Bulb DesignatorT-1 3/4
Wattage Rating1.260 WATTS
Emitted Light CharacteristicCOLORLESS
Voltage Rating6.300 VOLTS NOMINAL
Specification/standard Data08108-2181D MANUFACTURERS STANDARD
Current Rating for Which Designed0.200 AMPERES NOMINAL
Rated Average LifeHOURS
Bulb Light Transmission CharacteristicTRANSPARENT
Base StyleWIRE LEADS, DOWN
Filament Heavy Duty Service RatingNOT RATED
Light Output Rating0.400 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
Wire Lead Length0.625 INCHES NOMINAL IN
Filament DesignationC-2F
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5340-00-224-8956 INTERCHANGEABLE
Handle,bow
5315-00-252-59662-181 INTERCHANGEABLE
Key,woodruff
Precision Aerospace Corporation Dba Precision Engine Control
4240-00-258-20542181 INTERCHANGEABLE
Goggles,industrial
Iso Group Inc Dba Iso Group Inc
6515-00-364-092010-2530 INTERCHANGEABLE
Scissors,general Surgical
Boss Instruments, Limited Inc
5945-00-581-0288 INTERCHANGEABLE
Relay,electromagnetic
5999-00-581-34149000S6202-742907YPE3JR5-3A INTERCHANGEABLE
Light-Switch Assembly
Naval Ship Systems Command
3120-00-661-79802181 INTERCHANGEABLE
Bearing,sleeve
Weil Pump Co Inc
5935-00-837-5816710099-91 INTERCHANGEABLE
Backshell,electrical Connector
Raytheon Company Div Rmd Strategic
6240-00-914-5607 INTERCHANGEABLE
Lamp,incandescent
6550-00-926-22062181 INTERCHANGEABLE
Test Strips and Color Chart,bloo
Bayer Healthcare Llc Dba Bayer Healthcare-Viterion
Cross-Reference Index
Part NumberManufacturer
PKS-192-12 Aircraft Instruments Co (USA)
2181 Shelly Associates Inc. (USA)
2181DAS15 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
2181D Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
2181D Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
2181 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
1587-00 Decision Data Computer Corp (USA)
39013-2181 Aircraft Radio Industries Inc (USA)
PKS-192-19 Penn Keystone Corporation (USA)
65S136871 Motorola Communications Group Parts Dept Div of Motorola Inc (USA)
2112D Zf Industrieantriebe Witten Gmbh (DEU)
549-3001-017 Viking Technologies, Ltd. (USA)
2181 Alco Electronic Products Inc (USA)
739WE Micro Display Devices Ltd (GBR)
PKS-192-19 Aircraft Instruments Co (USA)
L.1334 Itt Industries Cannon Veam (GBR)
LTX2181 Lamptronix Co Ltd (USA)
2181 Industrial Electronic Engineers, Inc. (USA)
WE06.06.2002 Uptolight (FRA)
2181D General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
Related Parts
5340-00-224-8956INTERCHANGEABLE
HANDLE,BOW
5315-00-252-5966INTERCHANGEABLE
KEY,WOODRUFF
2-181
4240-00-258-2054INTERCHANGEABLE
GOGGLES,INDUSTRIAL
2181
6515-00-364-0920INTERCHANGEABLE
SCISSORS,GENERAL SURGICAL
10-2530
5945-00-581-0288INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5999-00-581-3414INTERCHANGEABLE
LIGHT-SWITCH ASSEMBLY
9000S6202-742907YPE3JR5-3A
3120-00-661-7980INTERCHANGEABLE
BEARING,SLEEVE
2181
5935-00-837-5816INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
710099-91
6240-00-914-5607INTERCHANGEABLE
LAMP,INCANDESCENT
6550-00-926-2206INTERCHANGEABLE
TEST STRIPS AND COLOR CHART,BLOO
2181
4730-00-956-8444INTERCHANGEABLE
PARTS KIT,STEAM TRAP
2181
6670-01-085-9745INTERCHANGEABLE
SCALE,WEIGHING

Frequently Asked Questions

What is NSN 6240-00-949-8109?

NSN 6240-00-949-8109 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 6240-00-949-8109?

NSN 6240-00-949-8109 has 29 cross-referenced part numbers: PKS-192-12 (Aircraft Instruments Co), 2181 (Shelly Associates Inc.), 2181DAS15 (General Electric Co Miniature Lamp Products Dept Lighting Business Group), 2181D (Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company), 2181D (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps) and 24 more.

What NSN replaces 6240-00-949-8109?

There are 12 known substitutes for 6240-00-949-8109: 5340-00-224-8956, 5315-00-252-5966, 4240-00-258-2054 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CM2181?

Key specifications for CM2181: Average Life Rating in Hours: 20000.0; Bulb Style: T (TUBULAR); Bulb Designator: T-1 3/4; Wattage Rating: 1.260 WATTS. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-949-8109 still in active supply?

NSN 6240-00-949-8109 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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