PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7M9957Lamp,incandescent

Caterpillar Inc Div Caterpillar Defense · NSN 6240-00-019-3125 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-019-3125 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-019-3125. Primary manufacturer part number: 7M9957.
Features
  • Lamp,incandescent — FSC 6240
  • Light Center Length: 0.750 INCHES NOMINAL IN
  • Wattage Rating: 8.820 WATTS
  • Average Life Rating in Hours: 1000.0
  • Rated Average Life: HOURS
  • Emitted Light Characteristic: COLORLESS
  • Voltage Rating: 14.000 VOLTS NOMINAL
  • Light Output Rating: 6.000 BEAM CANDLEPOWER NOMINAL SINGLE RATING
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-019-3125, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 21 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
NSN6240-00-019-3125
Primary Part Number7M9957
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusCANCELLED
Light Center Length0.750 INCHES NOMINAL IN
Wattage Rating8.820 WATTS
Average Life Rating in Hours1000.0
Rated Average LifeHOURS
Emitted Light CharacteristicCOLORLESS
Voltage Rating14.000 VOLTS NOMINAL
Light Output Rating6.000 BEAM CANDLEPOWER NOMINAL SINGLE RATING
Bulb DesignatorG-6
Base StyleSINGLE CONTACT BAYONET CANDELABRA
Bulb Light Transmission CharacteristicTRANSPARENT
Current Rating for Which Designed0.630 AMPERES NOMINAL
Bulb StyleG (GLOBULAR)
Filament Heavy Duty Service RatingNOT RATED
Filament Designation2C-2R
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
9390-00-057-4543 INTERCHANGEABLE
Tape,reflective
9390-00-057-4545 INTERCHANGEABLE
Tape,reflective
5325-00-068-8704327-1 INTERCHANGEABLE
Insert,screw Thread
Stanley Engineered Fastening Llc
2910-00-069-45002240546 INTERCHANGEABLE
Filter Element,fluid
Chrysler Realty Company Llc Dba Daimler Chrysler
9390-00-106-2465 INTERCHANGEABLE
Tape,reflective
4720-00-123-05703271 INTERCHANGEABLE
Hose Assembly,nonmetallic
Transdigm Inc Div Adelwiggins Group
3455-00-293-051408300 INTERCHANGEABLE
Cutter,milling,metal Slitting
Niagara Cutter Inc
5935-00-401-0111 INTERCHANGEABLE
Plug,tip
5950-00-645-46403271 INTERCHANGEABLE
Coil,electrical
Te Connectivity Corporation
4030-00-684-63393271 INTERCHANGEABLE
Clamp,wire Rope,bolted
Durko Marine Inc
Cross-Reference Index
Part NumberManufacturer
855066 Allied Signal Inc Aerospace Equipment Systems Eatontown Site (USA)
7M9957 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
AT12948T PRIMARY Deere & Co (USA)
631 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
193125 General Motors Corp (USA)
193125 General Motors Llc Dba General Motors Llc (USA)
631 Cooper Industries Inc Champion Aviation Products (USA)
631 Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
L631 General Motors Corp Delco Remy Div (USA)
L631 General Motors Llc Dba General Motors Llc (USA)
631 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
631 Communication Systems Div North American Philips Corp (USA)
7539459 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
L631 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
631 General Electric Company Dba Ge (USA)
3271 Hobbs Corp (USA)
1505 Concord Instruments Corp (USA)
87-0257 Finnigan Corporation (USA)
L631 General Electric Company Dba Ge (USA)
PL631 Precision Lamp Inc (USA)
Related Parts
9390-00-057-4543INTERCHANGEABLE
TAPE,REFLECTIVE
9390-00-057-4545INTERCHANGEABLE
TAPE,REFLECTIVE
5325-00-068-8704INTERCHANGEABLE
INSERT,SCREW THREAD
327-1
2910-00-069-4500INTERCHANGEABLE
FILTER ELEMENT,FLUID
2240546
9390-00-106-2465INTERCHANGEABLE
TAPE,REFLECTIVE
4720-00-123-0570INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
3271
3455-00-293-0514INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
08300
5935-00-401-0111INTERCHANGEABLE
PLUG,TIP
5950-00-645-4640INTERCHANGEABLE
COIL,ELECTRICAL
3271
4030-00-684-6339INTERCHANGEABLE
CLAMP,WIRE ROPE,BOLTED
3271
5310-00-931-8182INTERCHANGEABLE
NUT,SELF-LOCKING,SINGLE BALL SEA
3271
2910-00-999-8964INTERCHANGEABLE
CARBURETOR,FLOAT
L63S1

Frequently Asked Questions

What is NSN 6240-00-019-3125?

NSN 6240-00-019-3125 is a Lamp,incandescent, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 6240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6240-00-019-3125?

NSN 6240-00-019-3125 has 21 cross-referenced part numbers: 855066 (Allied Signal Inc Aerospace Equipment Systems Eatontown Site), 7M9957 (Caterpillar Inc Div Caterpillar Defense), AT12948T (Deere & Co), 631 (General Electric Co Miniature Lamp Products Dept Lighting Business Group), 193125 (General Motors Corp) and 16 more.

What NSN replaces 6240-00-019-3125?

There are 12 known substitutes for 6240-00-019-3125: 9390-00-057-4543, 9390-00-057-4545, 5325-00-068-8704 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7M9957?

Key specifications for 7M9957: Light Center Length: 0.750 INCHES NOMINAL IN; Wattage Rating: 8.820 WATTS; Average Life Rating in Hours: 1000.0; End Item Identification: W/S:SUPPORT EQUIPMENT OV-10A AIRCRAFT; SUPPORT EQUIPMENT, C-5 AIRCRAFT; AIRCRAFT, STRATOLIFTER C-135; SUPPORT EQUIPMENT, T-37 AIRCRAFT; GRADER, ROAD (130G); SHIPBOARD MATERIAL HANDLING EQUIPMENT (MHE); SUPPORT EQUIPMENT, T-38 AIRCRAFT; AIRCRAFT, HERCULES C-130; AIRCRAFT, THUNDERBOLT II, A-10; SUPPORT EQUIPMENT, B-1 AIRCRAFT A. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-019-3125 still in active supply?

NSN 6240-00-019-3125 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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