PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M6363/12-4Lamp,incandescent

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6240-01-444-0720 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-444-0720 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-444-0720. Primary manufacturer part number: M6363/12-4.
Features
  • Lamp,incandescent — FSC 6240
  • Filament Designation: C-2V V
  • Bulb Diameter: 1.040 INCHES MAXIMUM IN
  • Light Center Length: 1.120 INCHES NOMINAL IN
  • Current Rating for Which Designed: 0.660 AMPERES NOMINAL
  • Base Style: SINGLE CONTACT BAYONET CANDELABRA
  • Average Life Rating in Hours: 300.0
  • Filament Heavy Duty Service Rating: NOT RATED
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-01-444-0720, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-01-444-0720
Primary Part NumberM6363/12-4
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Filament DesignationC-2V V
Bulb Diameter1.040 INCHES MAXIMUM IN
Light Center Length1.120 INCHES NOMINAL IN
Current Rating for Which Designed0.660 AMPERES NOMINAL
Base StyleSINGLE CONTACT BAYONET CANDELABRA
Average Life Rating in Hours300.0
Filament Heavy Duty Service RatingNOT RATED
Wattage Rating20.600 WATTS
Emitted Light CharacteristicCOLORLESS
Light Output Rating21.000 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
Rated Average LifeHOURS
Bulb Light Transmission CharacteristicTRANSPARENT
Bulb StyleGG (GLASS GLOBULAR)
Bulb DesignatorS-8
Voltage Rating28.000 VOLTS NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6240-01-482-8243 INTERCHANGEABLE
Lamp,incandescent
Cross-Reference Index
Part NumberManufacturer
M6363/12-4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
10193154 Nimikkeistokeskus Ncb Finland (FIN)
MIL-L-6363/12 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
6240PL0201952 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
6240-01-482-8243INTERCHANGEABLE
LAMP,INCANDESCENT

Frequently Asked Questions

What is NSN 6240-01-444-0720?

NSN 6240-01-444-0720 is a Lamp,incandescent, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-01-444-0720?

NSN 6240-01-444-0720 has 4 cross-referenced part numbers: M6363/12-4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 10193154 (Nimikkeistokeskus Ncb Finland), MIL-L-6363/12 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 6240PL0201952 (Jednolity Indeks Materialowy - Uniform Material Index).

What NSN replaces 6240-01-444-0720?

There is 1 known substitute for 6240-01-444-0720: 6240-01-482-8243. Verify interchangeability with system specifications before substitution.

What are the specifications of M6363/12-4?

Key specifications for M6363/12-4: Filament Designation: C-2V V; Bulb Diameter: 1.040 INCHES MAXIMUM IN; Light Center Length: 1.120 INCHES NOMINAL IN; Current Rating for Which Designed: 0.660 AMPERES NOMINAL. 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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