PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-50439-1Lamp,incandescent

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 6240-00-019-3146 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-019-3146 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-019-3146. Primary manufacturer part number: A-A-50439-1.
Features
  • Lamp,incandescent — FSC 6240
  • Rated Average Life: HOURS
  • Bulb Style: T (TUBULAR)
  • Wattage Rating: 0.945 WATTS
  • Base Style: MINIATURE SCREW
  • Average Life Rating in Hours: 3000.0
  • Filament Heavy Duty Service Rating: NOT RATED
  • Current Rating for Which Designed: 0.150 AMPERES NOMINAL
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-019-3146, 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 Commercial Item Description 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 34 commercial cross-references from 28 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
NSN6240-00-019-3146
Primary Part NumberA-A-50439-1
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Rated Average LifeHOURS
Bulb StyleT (TUBULAR)
Wattage Rating0.945 WATTS
Base StyleMINIATURE SCREW
Average Life Rating in Hours3000.0
Filament Heavy Duty Service RatingNOT RATED
Current Rating for Which Designed0.150 AMPERES NOMINAL
Emitted Light CharacteristicCOLORLESS
Voltage Rating6.300 VOLTS NOMINAL
Light Output Rating0.500 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
Bulb DesignatorT-3 1/4
Bulb Light Transmission CharacteristicTRANSPARENT
Light Center Length0.970 INCHES NOMINAL IN
Filament DesignationC-2R
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3610-00-109-8852 INTERCHANGEABLE
Punch,precision
5910-00-120-106521A35391 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
General Dynamics Mission Systems, Inc. Dba Gdms
3110-00-155-8996 INTERCHANGEABLE
Bearing,ball,annular
3110-00-157-37266406FX INTERCHANGEABLE
Bearing,ball,thrust
Oshkosh Defense Llc
3110-00-159-16031483408 INTERCHANGEABLE
Cam Follower,needle Bearing
Naval Ship Systems Command
3439-00-174-2616 INTERCHANGEABLE
Solder,liquid
3455-00-187-2633 INTERCHANGEABLE
Blade,hole Saw
5950-00-405-26652945-22 INTERCHANGEABLE
Transformer,power
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5110-00-473-7833S-119 INTERCHANGEABLE
Scraper,spray Booth
Ngk Metals Corporation Dba N G K Berylco
3455-00-808-4294SF-48X INTERCHANGEABLE
Cutter,milling,end
Quinco Tool Products Co Inc
Cross-Reference Index
Part NumberManufacturer
A-A-50439-1 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
X951225 Viavi Solutionsllc (USA)
849546-10 Rca Corp Consumer Electronics (USA)
40 Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
L40 Satair A/s (DNK)
40 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
X951225 Marconi Electronics Inc Marconi Instruments Div (USA)
40 Cooper Industries Inc Champion Aviation Products (USA)
LTX40 Lamptronix Co Ltd (USA)
40 Satair A/s (DNK)
A50439-1 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
P7807 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
A-A-50439 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
899295 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
WL111 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
40 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
193146 General Motors Llc Dba General Motors Llc (USA)
MS15536-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
193146 General Motors Corp Delco Remy Div (USA)
S-40 Shokai Far East, Ltd. (USA)
Related Parts
3610-00-109-8852INTERCHANGEABLE
PUNCH,PRECISION
5910-00-120-1065INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
21A35391
3110-00-155-8996INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-157-3726INTERCHANGEABLE
BEARING,BALL,THRUST
6406FX
3110-00-159-1603INTERCHANGEABLE
CAM FOLLOWER,NEEDLE BEARING
1483408
3439-00-174-2616INTERCHANGEABLE
SOLDER,LIQUID
3455-00-187-2633INTERCHANGEABLE
BLADE,HOLE SAW
5950-00-405-2665INTERCHANGEABLE
TRANSFORMER,POWER
2945-22
5110-00-473-7833INTERCHANGEABLE
SCRAPER,SPRAY BOOTH
S-119
3455-00-808-4294INTERCHANGEABLE
CUTTER,MILLING,END
SF-48X
6135-00-985-7845INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
003-360013R00
6520-01-260-2678INTERCHANGEABLE
CROWN,DENTAL,TEMPORARY
L-40

Frequently Asked Questions

What is NSN 6240-00-019-3146?

NSN 6240-00-019-3146 is a Lamp,incandescent, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-019-3146?

NSN 6240-00-019-3146 has 34 cross-referenced part numbers: A-A-50439-1 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), X951225 (Viavi Solutionsllc), 849546-10 (Rca Corp Consumer Electronics), 40 (Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company), L40 (Satair A/s) and 29 more.

What NSN replaces 6240-00-019-3146?

There are 12 known substitutes for 6240-00-019-3146: 3610-00-109-8852, 5910-00-120-1065, 3110-00-155-8996 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-50439-1?

Key specifications for A-A-50439-1: Rated Average Life: HOURS; Bulb Style: T (TUBULAR); Wattage Rating: 0.945 WATTS; Base Style: MINIATURE SCREW. 15 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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