PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4531Lamp,incandescent

Lamp Industry for Use with Industry Designations and Abbreviations for Lamps · NSN 6240-00-019-3186 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-019-3186 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-019-3186. Primary manufacturer part number: 4531.
Features
  • Lamp,incandescent — FSC 6240
  • Filament Heavy Duty Service Rating: NOT RATED
  • Emitted Light Characteristic: COLORLESS
  • Wattage Rating: 40.000 WATTS
  • Base Style: MEDIUM SCREW
  • Rated Average Life: HOURS
  • Bulb Style: PAR (PARABOLIC, ALUMINIZED REFLECTOR)
  • Average Life Rating in Hours: 400.0
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-019-3186, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Lamp Industry for Use with Industry Designations and Abbreviations for Lamps. 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: Active.

Technical Specifications
ParameterValue
NSN6240-00-019-3186
Primary Part Number4531
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerLamp Industry for Use with Industry Designations and Abbreviations for Lamps
StatusACTIVE
Filament Heavy Duty Service RatingNOT RATED
Emitted Light CharacteristicCOLORLESS
Wattage Rating40.000 WATTS
Base StyleMEDIUM SCREW
Rated Average LifeHOURS
Bulb StylePAR (PARABOLIC, ALUMINIZED REFLECTOR)
Average Life Rating in Hours400.0
Voltage Rating12.500 VOLTS NOMINAL
Light Intensity Distribution FeaturePARABOLIC REFLECTOR
Current Rating for Which Designed3.200 AMPERES NOMINAL
Bulb Light Transmission CharacteristicTRANSPARENT
Bulb DesignatorPAR-46
Light Output Rating30000.000 CANDLEPOWER PER SQUARE MILLIMETER NOMINAL SINGLE RATING
Features ProvidedFILAMENT SHIELDING AND HEAT RESISTANT GLASS
Filament DesignationC-6
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-254-6945A114527 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon Co
3010-00-294-4678533PC4 INTERCHANGEABLE
Disk,clutch,nonvehicular
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
9540-00-596-3047 INTERCHANGEABLE
Channel,structural
5940-00-713-8496509B30-6REVE INTERCHANGEABLE
Terminal,stud
Cardwell Condenser Corp Lapointe-Admiral Div
1660-00-719-9372 INTERCHANGEABLE
Adapter,compressed Gas Cylinder
5306-00-811-8923 INTERCHANGEABLE
Bolt,eye
3120-00-828-68521894635 INTERCHANGEABLE
Bushing,sleeve
Borgwarner Pds (anderson), L.l.c.
5950-00-943-798110653548 INTERCHANGEABLE
Reactor
Us Army Aviation and Missile Command
5330-01-078-4999453-1 INTERCHANGEABLE
Gasket
Eaton Aerospace Llc Sterer Engineering Morgan Actuators
4820-01-137-5066 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
4531 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
W-L-50 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
4531 PRIMARY Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
Related Parts
5950-00-254-6945INTERCHANGEABLE
COIL,RADIO FREQUENCY
A114527
3010-00-294-4678INTERCHANGEABLE
DISK,CLUTCH,NONVEHICULAR
533PC4
9540-00-596-3047INTERCHANGEABLE
CHANNEL,STRUCTURAL
5940-00-713-8496INTERCHANGEABLE
TERMINAL,STUD
509B30-6REVE
1660-00-719-9372INTERCHANGEABLE
ADAPTER,COMPRESSED GAS CYLINDER
5306-00-811-8923INTERCHANGEABLE
BOLT,EYE
3120-00-828-6852INTERCHANGEABLE
BUSHING,SLEEVE
1894635
5950-00-943-7981INTERCHANGEABLE
REACTOR
10653548
5330-01-078-4999INTERCHANGEABLE
GASKET
453-1
4820-01-137-5066INTERCHANGEABLE
VALVE,CHECK
9540-01-199-4601INTERCHANGEABLE
CHANNEL,STRUCTURAL
4940-01-477-9913INTERCHANGEABLE
PIPE,STRIGHT,AIRCRA
4531

Frequently Asked Questions

What is NSN 6240-00-019-3186?

NSN 6240-00-019-3186 is a Lamp,incandescent, manufactured by Lamp Industry for Use with Industry Designations and Abbreviations for Lamps, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-019-3186?

NSN 6240-00-019-3186 has 3 cross-referenced part numbers: 4531 (American National Standards Institute Incorporated Dba American National Standards Institute), W-L-50 (Federal Specifications Promulgated by General Services Administration Washington DC), 4531 (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps).

What NSN replaces 6240-00-019-3186?

There are 12 known substitutes for 6240-00-019-3186: 5950-00-254-6945, 3010-00-294-4678, 9540-00-596-3047 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4531?

Key specifications for 4531: Filament Heavy Duty Service Rating: NOT RATED; Emitted Light Characteristic: COLORLESS; Wattage Rating: 40.000 WATTS; Base Style: MEDIUM SCREW. 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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