PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P1056-287Lamp,incandescent

J. W. Speaker Corporation Dba Jw Speaker Corp · NSN 6240-00-931-6679 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-931-6679 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-931-6679. Primary manufacturer part number: P1056-287.
Features
  • Lamp,incandescent — FSC 6240
  • Emitted Light Characteristic: COLORLESS
  • Filament Heavy Duty Service Rating: NOT RATED
  • Specification/standard Data: 08108-110 MANUFACTURERS STANDARD
  • Bulb Light Transmission Characteristic: TRANSPARENT
  • Light Center Length: 1.125 INCHES NOMINAL IN
  • Light Output Rating: 6.000 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
  • Base Style: DOUBLE CONTACT BAYONET CANDELABRA
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-931-6679, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is J. W. Speaker Corporation Dba Jw Speaker Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6240-00-931-6679
Primary Part NumberP1056-287
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerJ. W. Speaker Corporation Dba Jw Speaker Corp
StatusCANCELLED
Emitted Light CharacteristicCOLORLESS
Filament Heavy Duty Service RatingNOT RATED
Specification/standard Data08108-110 MANUFACTURERS STANDARD
Bulb Light Transmission CharacteristicTRANSPARENT
Light Center Length1.125 INCHES NOMINAL IN
Light Output Rating6.000 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
Base StyleDOUBLE CONTACT BAYONET CANDELABRA
Average Life Rating in Hours200.0
Voltage Rating44.000 VOLTS NOMINAL
Wattage Rating7.480 WATTS
Bulb DesignatorS-8
Current Rating for Which Designed0.170 AMPERES NOMINAL
Rated Average LifeHOURS
Filament DesignationC-7A A
Bulb StyleS (STRAIGHT SIDE)
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5315-01-258-1497 INTERCHANGEABLE
Pin,spring
5915-01-434-7191301191 INTERCHANGEABLE
Filter,band Pass
Caes Systems Llc
Cross-Reference Index
Part NumberManufacturer
110 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
902596 Schaeff Namco Inc (USA)
P1056-287 PRIMARY J. W. Speaker Corporation Dba Jw Speaker Corp (USA)
PL110 Lucifer Furnaces Inc. (USA)
87-0068 Bae Systems Information & Electronic Systems Integration Inc. (USA)
P1506-287 PRIMARY J. W. Speaker Corporation Dba Jw Speaker Corp (USA)
110 Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
110 J. W. Speaker Corporation Dba Jw Speaker Corp (USA)
87-0068 Finnigan Corporation (USA)
849546-55 Rca Corp Consumer Electronics (USA)
110 Arkay Corp of Wisconsin (USA)
XPP3-270 Pettibone Llc (USA)
PL110 Precision Lamp Inc (USA)
110 Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel (USA)
110 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
Related Parts
5315-01-258-1497INTERCHANGEABLE
PIN,SPRING
5915-01-434-7191INTERCHANGEABLE
FILTER,BAND PASS
301191

Frequently Asked Questions

What is NSN 6240-00-931-6679?

NSN 6240-00-931-6679 is a Lamp,incandescent, manufactured by J. W. Speaker Corporation Dba Jw Speaker Corp, classified under FSC 6240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6240-00-931-6679?

NSN 6240-00-931-6679 has 15 cross-referenced part numbers: 110 (General Electric Co Miniature Lamp Products Dept Lighting Business Group), 902596 (Schaeff Namco Inc), P1056-287 (J. W. Speaker Corporation Dba Jw Speaker Corp), PL110 (Lucifer Furnaces Inc.), 87-0068 (Bae Systems Information & Electronic Systems Integration Inc.) and 10 more.

What NSN replaces 6240-00-931-6679?

There are 2 known substitutes for 6240-00-931-6679: 5315-01-258-1497, 5915-01-434-7191. Verify interchangeability with system specifications before substitution.

What are the specifications of P1056-287?

Key specifications for P1056-287: Emitted Light Characteristic: COLORLESS; Filament Heavy Duty Service Rating: NOT RATED; Specification/standard Data: 08108-110 MANUFACTURERS STANDARD; Bulb Light Transmission Characteristic: TRANSPARENT. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-931-6679 still in active supply?

NSN 6240-00-931-6679 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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