PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W-L-101/31Lamp,incandescent

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 6240-00-143-3059 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-143-3059 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-143-3059. Primary manufacturer part number: W-L-101/31.
Features
  • Lamp,incandescent — FSC 6240
  • Bulb Style: A (ARBITRARY DESIGNATION)
  • Current Rating for Which Designed: 0.192 AMPERES MINIMUM AND 0.208 AMPERES MAXIMUM
  • Voltage Rating: 120.000 VOLTS MINIMUM AND 130.000 VOLTS MAXIMUM
  • Filament Heavy Duty Service Rating: NOT RATED
  • Rated Average Life: HOURS
  • Wattage Rating: 25.000 WATTS
  • Average Life Rating in Hours: 2500.0
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-143-3059, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 20 commercial cross-references from 17 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
NSN6240-00-143-3059
Primary Part NumberW-L-101/31
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Bulb StyleA (ARBITRARY DESIGNATION)
Current Rating for Which Designed0.192 AMPERES MINIMUM AND 0.208 AMPERES MAXIMUM
Voltage Rating120.000 VOLTS MINIMUM AND 130.000 VOLTS MAXIMUM
Filament Heavy Duty Service RatingNOT RATED
Rated Average LifeHOURS
Wattage Rating25.000 WATTS
Average Life Rating in Hours2500.0
Bulb Light Transmission CharacteristicTRANSLUCENT
Base StyleMEDIUM SCREW
Light Center Length2.500 INCHES NOMINAL IN
Emitted Light CharacteristicWHITE
Bulb DesignatorA-19
Light Output Rating265.000 LUMENS NOMINAL SINGLE RATING
Filament DesignationC-9
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5315-00-001-533535613 INTERCHANGEABLE
Pin,straight,headless
Moog Military Aircraft Llc
6520-00-140-7663 INTERCHANGEABLE
Operating and Treatment,dental,f
3110-00-144-85280042969 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
6240-00-155-8651 INTERCHANGEABLE
Lamp,incandescent
5905-00-173-5681 INTERCHANGEABLE
Resistor,adjustable
5905-00-186-21932LA43D2500 INTERCHANGEABLE
Resistor,adjustable
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5940-00-199-962125A INTERCHANGEABLE
Terminal Board
Lucent Technologies Inc Corporate Headquarters
5120-00-227-8107 INTERCHANGEABLE
Extension,socket Wrench
4730-00-253-5761 INTERCHANGEABLE
Elbow,pipe
3460-00-277-851334 AND K3 INTERCHANGEABLE
Chuck,drill
Jacobs Mfg Co the
Cross-Reference Index
Part NumberManufacturer
W-L-101/31 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
25A120V General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
25A120V General Dynamics Mission Systems, Inc. (USA)
6240PL1364843 Jednolity Indeks Materialowy - Uniform Material Index (POL)
25A19-130V Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
MS15586-5 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
W-L-101 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
25A120V Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
35613 General Electric Company Dba Ge (USA)
165239 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
25A99-120V Zf Industrieantriebe Witten Gmbh (DEU)
25AC0RD144 Verd-a-Ray Corp Sub of North American Philips Lighting Corp (USA)
25A120V General Electric Company Dba Ge (USA)
8160598 Us Army Aviation and Missile Command (USA)
25A120V Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
25A-120V Gte Products Corp Sylvania Miniature Lighting Div (USA)
25A12VTYPE-A19 General Electric Co Lamp Glass and Components Dept (USA)
340-6 Perko Inc (USA)
25A American National Standards Institute Incorporated Dba American National Standards Institute (USA)
4518 Hose-Mccann Telephone Co, Inc (USA)
Related Parts
5315-00-001-5335INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
35613
6520-00-140-7663INTERCHANGEABLE
OPERATING AND TREATMENT,DENTAL,F
3110-00-144-8528INTERCHANGEABLE
BEARING,BALL,ANNULAR
0042969
6240-00-155-8651INTERCHANGEABLE
LAMP,INCANDESCENT
5905-00-173-5681INTERCHANGEABLE
RESISTOR,ADJUSTABLE
5905-00-186-2193INTERCHANGEABLE
RESISTOR,ADJUSTABLE
2LA43D2500
5940-00-199-9621INTERCHANGEABLE
TERMINAL BOARD
25A
5120-00-227-8107INTERCHANGEABLE
EXTENSION,SOCKET WRENCH
4730-00-253-5761INTERCHANGEABLE
ELBOW,PIPE
3460-00-277-8513INTERCHANGEABLE
CHUCK,DRILL
34 AND K3
5905-00-279-5427INTERCHANGEABLE
RESISTOR,ADJUSTABLE
WL25A3000WITHPUSH1
5905-00-284-3338INTERCHANGEABLE
RESISTOR,ADJUSTABLE
0366-50P0RM5

Frequently Asked Questions

What is NSN 6240-00-143-3059?

NSN 6240-00-143-3059 is a Lamp,incandescent, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 6240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6240-00-143-3059?

NSN 6240-00-143-3059 has 20 cross-referenced part numbers: W-L-101/31 (Federal Specifications Promulgated by General Services Administration Washington DC), 25A120V (General Electric Co Miniature Lamp Products Dept Lighting Business Group), 25A120V (General Dynamics Mission Systems, Inc.), 6240PL1364843 (Jednolity Indeks Materialowy - Uniform Material Index), 25A19-130V (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps) and 15 more.

What NSN replaces 6240-00-143-3059?

There are 12 known substitutes for 6240-00-143-3059: 5315-00-001-5335, 6520-00-140-7663, 3110-00-144-8528 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W-L-101/31?

Key specifications for W-L-101/31: Bulb Style: A (ARBITRARY DESIGNATION); Current Rating for Which Designed: 0.192 AMPERES MINIMUM AND 0.208 AMPERES MAXIMUM; Voltage Rating: 120.000 VOLTS MINIMUM AND 130.000 VOLTS MAXIMUM; Filament Heavy Duty Service Rating: NOT RATED. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-143-3059 still in active supply?

NSN 6240-00-143-3059 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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