PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CM1591Lamp,incandescent

Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron · NSN 6240-01-152-7045 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-152-7045 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-152-7045. Primary manufacturer part number: CM1591.
Features
  • Lamp,incandescent — FSC 6240
  • Base Style: SINGLE CONTACT BAYONET CANDELABRA
  • Filament Designation: C-2V V
  • Wattage Rating: 20.000 WATTS
  • Bulb Designator: S-8
  • Filament Heavy Duty Service Rating: NOT RATED
  • Voltage Rating: 28.000 VOLTS NOMINAL
  • Light Center Length: 31.8 MILLIMETERS NOMINAL MM
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-01-152-7045, 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 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-01-152-7045
Primary Part NumberCM1591
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerChicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
StatusACTIVE
Base StyleSINGLE CONTACT BAYONET CANDELABRA
Filament DesignationC-2V V
Wattage Rating20.000 WATTS
Bulb DesignatorS-8
Filament Heavy Duty Service RatingNOT RATED
Voltage Rating28.000 VOLTS NOMINAL
Light Center Length31.8 MILLIMETERS NOMINAL MM
Bulb Light Transmission CharacteristicTRANSPARENT
Average Life Rating in Hours400.0
Bulb StyleS (STRAIGHT SIDE)
Current Rating for Which Designed0.710 AMPERES NOMINAL
Emitted Light CharacteristicCOLORLESS
Rated Average LifeHOURS
Specification/standard Data08108-1591 MANUFACTURERS STANDARD
Light Output Rating15.000 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6240-00-014-5431 INTERCHANGEABLE
Lamp,incandescent
2990-00-185-7028T-1591 INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
4820-00-202-95281871-3-8IN INTERCHANGEABLE
Valve,globe
Flowserve Inc
4730-00-305-97841591 INTERCHANGEABLE
Elbow,pipe
H20 Tank Inc U S Motors Div
2030-00-343-7417 INTERCHANGEABLE
Valve,cutoff
5925-00-417-3256 INTERCHANGEABLE
Ground Fault Circuit Interrupter
6130-00-500-4448 INTERCHANGEABLE
Power Supply
6230-00-520-8797 INTERCHANGEABLE
Spotlight
5965-00-549-0220 INTERCHANGEABLE
Earphone Element
5905-01-085-8334 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Cross-Reference Index
Part NumberManufacturer
WL-1591 Wamco, Inc. Dba Wamco Inc (USA)
CM1591 PRIMARY Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
1591 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
ML-1591 Micro Lamps Inc. (USA)
Related Parts
6240-00-014-5431INTERCHANGEABLE
LAMP,INCANDESCENT
2990-00-185-7028INTERCHANGEABLE
MUFFLER,EXHAUST
T-1591
4820-00-202-9528INTERCHANGEABLE
VALVE,GLOBE
1871-3-8IN
4730-00-305-9784INTERCHANGEABLE
ELBOW,PIPE
1591
2030-00-343-7417INTERCHANGEABLE
VALVE,CUTOFF
5925-00-417-3256INTERCHANGEABLE
GROUND FAULT CIRCUIT INTERRUPTER
6130-00-500-4448INTERCHANGEABLE
POWER SUPPLY
6230-00-520-8797INTERCHANGEABLE
SPOTLIGHT
5965-00-549-0220INTERCHANGEABLE
EARPHONE ELEMENT
5905-01-085-8334INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5945-01-134-7911INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5330-01-146-1642INTERCHANGEABLE
PACKING
159-01

Frequently Asked Questions

What is NSN 6240-01-152-7045?

NSN 6240-01-152-7045 is a Lamp,incandescent, manufactured by Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-01-152-7045?

NSN 6240-01-152-7045 has 4 cross-referenced part numbers: WL-1591 (Wamco, Inc. Dba Wamco Inc), CM1591 (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron), 1591 (General Electric Co Miniature Lamp Products Dept Lighting Business Group), ML-1591 (Micro Lamps Inc.).

What NSN replaces 6240-01-152-7045?

There are 12 known substitutes for 6240-01-152-7045: 6240-00-014-5431, 2990-00-185-7028, 4820-00-202-9528 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CM1591?

Key specifications for CM1591: Base Style: SINGLE CONTACT BAYONET CANDELABRA; Overall Length: 50.8 MILLIMETERS MAXIMUM MM; Filament Designation: C-2V V; Wattage Rating: 20.000 WATTS. 16 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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