PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1886Lamp,incandescent

General Electric Co Miniature Lamp Products Dept Lighting Business Group · NSN 6240-00-946-9658 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-946-9658 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-946-9658. Primary manufacturer part number: 1886.
Features
  • Lamp,incandescent — FSC 6240
  • Bulb Designator: T-4 1/2
  • Rated Average Life: HOURS
  • Filament Designation: C-2R
  • Bulb Style: T (TUBULAR)
  • Base Style: MINIATURE BAYONET
  • Filament Heavy Duty Service Rating: NOT RATED
  • Emitted Light Characteristic: WHITE
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-946-9658, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is General Electric Co Miniature Lamp Products Dept Lighting Business Group. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN6240-00-946-9658
Primary Part Number1886
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGeneral Electric Co Miniature Lamp Products Dept Lighting Business Group
StatusACTIVE
Bulb DesignatorT-4 1/2
Rated Average LifeHOURS
Filament DesignationC-2R
Bulb StyleT (TUBULAR)
Base StyleMINIATURE BAYONET
Filament Heavy Duty Service RatingNOT RATED
Emitted Light CharacteristicWHITE
Average Life Rating in Hours3000.0
Bulb Light Transmission CharacteristicTRANSPARENT
Current Rating for Which Designed0.900 AMPERES NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-012-9887 INTERCHANGEABLE
Screw,wood
5120-00-090-4386PWA3347-4 INTERCHANGEABLE
Gage
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
3110-00-101-1784332A INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5365-00-102-79921886 INTERCHANGEABLE
Shim
Eaton Aerospace, Llc Dba Jackson South
4820-00-288-74771886 INTERCHANGEABLE
Valve,check
Champion Laboratories, Inc.
6780-00-731-87501886 INTERCHANGEABLE
Glass,and Set of Pa
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
5910-00-851-60170180-0064 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Keysight Technologies Inc
6515-00-904-56301886 INTERCHANGEABLE
Cuff,sphygmomanometer
W. a. Baum Co., Inc. Dba Wa Baum Co Inc
4220-01-183-2998 INTERCHANGEABLE
Adapter,divers Mask
6250-01-263-7684 INTERCHANGEABLE
Lampholder
Cross-Reference Index
Part NumberManufacturer
1886 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
WL111 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5305-00-012-9887INTERCHANGEABLE
SCREW,WOOD
5120-00-090-4386INTERCHANGEABLE
GAGE
PWA3347-4
3110-00-101-1784INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
332A
5365-00-102-7992INTERCHANGEABLE
SHIM
1886
4820-00-288-7477INTERCHANGEABLE
VALVE,CHECK
1886
6780-00-731-8750INTERCHANGEABLE
GLASS,AND SET OF PA
1886
5910-00-851-6017INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
0180-0064
6515-00-904-5630INTERCHANGEABLE
CUFF,SPHYGMOMANOMETER
1886
4220-01-183-2998INTERCHANGEABLE
ADAPTER,DIVERS MASK
6250-01-263-7684INTERCHANGEABLE
LAMPHOLDER
5315-01-270-8282INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
6515-01-336-5898INTERCHANGEABLE
NEBULIZER,MEDICINAL

Frequently Asked Questions

What is NSN 6240-00-946-9658?

NSN 6240-00-946-9658 is a Lamp,incandescent, manufactured by General Electric Co Miniature Lamp Products Dept Lighting Business Group, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-946-9658?

NSN 6240-00-946-9658 has 2 cross-referenced part numbers: 1886 (General Electric Co Miniature Lamp Products Dept Lighting Business Group), WL111 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 6240-00-946-9658?

There are 12 known substitutes for 6240-00-946-9658: 5305-00-012-9887, 5120-00-090-4386, 3110-00-101-1784 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1886?

Key specifications for 1886: Bulb Designator: T-4 1/2; Rated Average Life: HOURS; Filament Designation: C-2R; Bulb Style: T (TUBULAR). 11 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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