PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS18002-4503Lamp,incandescent

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 6240-00-539-8412 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-539-8412 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-539-8412. Primary manufacturer part number: MS18002-4503.
Features
  • Lamp,incandescent — FSC 6240
  • Filament Heavy Duty Service Rating: NOT RATED
  • Bulb Style: PAR (PARABOLIC, ALUMINIZED REFLECTOR)
  • Wattage Rating: 40.000 WATTS
  • Rated Average Life: HOURS
  • Specification/standard Data: 08108-4503 MANUFACTURERS STANDARD
  • Bulb Light Transmission Characteristic: TRANSPARENT
  • Base Style: TWO SCREW TERMINALS
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-539-8412, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN6240-00-539-8412
Primary Part NumberMS18002-4503
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
StatusCANCELLED
Filament Heavy Duty Service RatingNOT RATED
Bulb StylePAR (PARABOLIC, ALUMINIZED REFLECTOR)
Wattage Rating40.000 WATTS
Rated Average LifeHOURS
Specification/standard Data08108-4503 MANUFACTURERS STANDARD
Bulb Light Transmission CharacteristicTRANSPARENT
Base StyleTWO SCREW TERMINALS
Voltage Rating14.000 VOLTS NOMINAL
Light Output Rating10000.000 BEAM CANDLEPOWER NOMINAL SINGLE RATING
Average Life Rating in Hours400.0
Bulb DesignatorPAR-36
Emitted Light CharacteristicCOLORLESS
Light Intensity Distribution FeaturePARABOLIC REFLECTOR
Current Rating for Which Designed2.860 AMPERES NOMINAL
Filament DesignationC-6
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5998-00-081-7768 INTERCHANGEABLE
Circuit Card Assembly
5945-00-258-9852SMC144572 INTERCHANGEABLE
Relay,electromagnetic
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5110-00-268-129250-10957 INTERCHANGEABLE
Reamer,hand
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
2030-00-399-49024503 INTERCHANGEABLE
Chain Section
Jeffrey Chain L.p.
5360-00-446-87984503 INTERCHANGEABLE
Spring,helical,compression
Northrop Grumman Systems Corporation Div Marine Systems
5950-00-766-85462520885PC1 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3040-00-767-7206 INTERCHANGEABLE
Worm Shaft
5999-00-828-90075682-41 INTERCHANGEABLE
Clip,electrical
Cooper Bussmann, Llc Dba Cooper Industries
7330-00-969-03804503 INTERCHANGEABLE
Plate,meat Grinder
Middleby Marshall Inc Conveyor Ovens and Mixers Div
4930-01-005-378713217E3059 INTERCHANGEABLE
Harness Assembly,vehicular
Cecom Lr Center
Cross-Reference Index
Part NumberManufacturer
MS18002-4503 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
4503 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
4503 Cooper Industries Inc Champion Aviation Products (USA)
Related Parts
5998-00-081-7768INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5945-00-258-9852INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
SMC144572
5110-00-268-1292INTERCHANGEABLE
REAMER,HAND
50-10957
2030-00-399-4902INTERCHANGEABLE
CHAIN SECTION
4503
5360-00-446-8798INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4503
5950-00-766-8546INTERCHANGEABLE
TRANSFORMER,POWER
2520885PC1
3040-00-767-7206INTERCHANGEABLE
WORM SHAFT
5999-00-828-9007INTERCHANGEABLE
CLIP,ELECTRICAL
5682-41
7330-00-969-0380INTERCHANGEABLE
PLATE,MEAT GRINDER
4503
4930-01-005-3787INTERCHANGEABLE
HARNESS ASSEMBLY,VEHICULAR
13217E3059
5985-01-096-1610INTERCHANGEABLE
ATTENUATOR,FIXED
4503
5950-01-172-2292INTERCHANGEABLE
TRANSFORMER,POWER
4503

Frequently Asked Questions

What is NSN 6240-00-539-8412?

NSN 6240-00-539-8412 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: cancelled.

What are the part numbers for NSN 6240-00-539-8412?

NSN 6240-00-539-8412 has 3 cross-referenced part numbers: MS18002-4503 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 4503 (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps), 4503 (Cooper Industries Inc Champion Aviation Products).

What NSN replaces 6240-00-539-8412?

There are 12 known substitutes for 6240-00-539-8412: 5998-00-081-7768, 5945-00-258-9852, 5110-00-268-1292 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS18002-4503?

Key specifications for MS18002-4503: Filament Heavy Duty Service Rating: NOT RATED; Bulb Style: PAR (PARABOLIC, ALUMINIZED REFLECTOR); Wattage Rating: 40.000 WATTS; Rated Average Life: HOURS. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-539-8412 still in active supply?

NSN 6240-00-539-8412 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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