PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS25237-368Lamp,incandescent

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 6240-01-043-5306 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-043-5306 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-043-5306. Primary manufacturer part number: MS25237-368.
Features
  • Lamp,incandescent — FSC 6240
  • Bulb Designator: T-1 3/4
  • Average Life Rating in Hours: 500.0
  • Wattage Rating: 0.500 WATTS
  • Filament Designation: C-2R
  • Bulb Light Transmission Characteristic: TRANSPARENT
  • Bulb Style: T ("U" SHAPED TUBULAR)
  • 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 6240-01-043-5306, 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 Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN6240-01-043-5306
Primary Part NumberMS25237-368
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Bulb DesignatorT-1 3/4
Average Life Rating in Hours500.0
Wattage Rating0.500 WATTS
Filament DesignationC-2R
Bulb Light Transmission CharacteristicTRANSPARENT
Bulb StyleT ("U" SHAPED TUBULAR)
Filament Heavy Duty Service RatingNOT RATED
Rated Average LifeHOURS
Base StyleMIDGET FLANGED
Emitted Light CharacteristicWHITE
Current Rating for Which Designed0.200 AMPERES NOMINAL
Departure From Cited DocumentMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6240-00-851-5356368 INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
Cross-Reference Index
Part NumberManufacturer
MS25237-368 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6240-00-851-5356INTERCHANGEABLE
LAMP,INCANDESCENT
368

Frequently Asked Questions

What is NSN 6240-01-043-5306?

NSN 6240-01-043-5306 is a Lamp,incandescent, manufactured by Military Standards Promulgated by Military Departments 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 6240-01-043-5306?

NSN 6240-01-043-5306 has 1 cross-referenced part number: MS25237-368 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6240-01-043-5306?

There is 1 known substitute for 6240-01-043-5306: 6240-00-851-5356. Verify interchangeability with system specifications before substitution.

What are the specifications of MS25237-368?

Key specifications for MS25237-368: Bulb Designator: T-1 3/4; Overall Length: 0.625 INCHES MAXIMUM IN; Average Life Rating in Hours: 500.0; Wattage Rating: 0.500 WATTS. 13 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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