PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6A-1Lamp,incandescent

Micro Lamps Inc. · NSN 6240-00-266-9944 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-266-9944 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-266-9944. Primary manufacturer part number: 6A-1.
Features
  • Lamp,incandescent — FSC 6240
  • Bulb Light Transmission Characteristic: TRANSPARENT
  • Emitted Light Characteristic: WHITE
  • Filament Heavy Duty Service Rating: NOT RATED
  • Bulb Style: T (TUBULAR)
  • Bulb Designator: T-2
  • Current Rating for Which Designed: 0.120 AMPERES MINIMUM AND 0.160 AMPERES MAXIMUM
  • Base Style: TELEPHONE SLIDE NUMBER ONE
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-266-9944, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Micro Lamps Inc.. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 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
NSN6240-00-266-9944
Primary Part Number6A-1
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerMicro Lamps Inc.
StatusCANCELLED
Bulb Light Transmission CharacteristicTRANSPARENT
Emitted Light CharacteristicWHITE
Filament Heavy Duty Service RatingNOT RATED
Bulb StyleT (TUBULAR)
Bulb DesignatorT-2
Current Rating for Which Designed0.120 AMPERES MINIMUM AND 0.160 AMPERES MAXIMUM
Base StyleTELEPHONE SLIDE NUMBER ONE
Average Life Rating in Hours5000.0
Rated Average LifeHOURS
Voltage Rating6.000 VOLTS NOMINAL
Features ProvidedFILAMENT SHIELDING AND HEAT RESISTANT GLASS
Light Output Rating1500.000 FOOTCANDLES NOMINAL SINGLE RATING
Filament DesignationC-2V V
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-8514E3 INTERCHANGEABLE
Bearing,ball,thrust
Abc Acquisition Company Dba Aetna Bearing Company
6505-00-153-837906-02077 INTERCHANGEABLE
Eugenol
Keystone Dental, Inc
5120-00-223-6942 INTERCHANGEABLE
Extractor,screw
5977-00-226-11126A1 INTERCHANGEABLE
Brush,electrical Contact
Aerocontrolex Group, Inc. Div Talley Actuators
1730-00-247-1569E3 INTERCHANGEABLE
Sling,aircraft Maintenance
The Boeing Company Div Legacy Am&m
4910-00-357-6617E3 INTERCHANGEABLE
Plate Pulling
Bear Hydraulics Inc
3120-00-528-6551E3 INTERCHANGEABLE
Bushing,sleeve
Circor Naval Solutions Llc Dba Warren Pumps
5961-00-783-5719A300 INTERCHANGEABLE
Semiconductor Device,diode
Mallory Sonalert Products, Inc.
5965-00-801-74106A1 INTERCHANGEABLE
Loudspeaker,permanent Magnet
Quam Nichols Co
3433-01-075-2145E-3 INTERCHANGEABLE
Tip,welding Torch
Dockson Corporation
Cross-Reference Index
Part NumberManufacturer
94006 Gte Communication Systems Corp (USA)
E3 Lucent Technologies Inc Dba Federal Marketing Group (USA)
E3 At and T Corp (USA)
6A1 General Electric Co Miniature Lamp Products Dept Lighting Business Group (USA)
C78-391 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
6A-1 United States Gypsum Co (USA)
E3 Lucent Technologies Inc Corporate Headquarters (USA)
6A-1 PRIMARY Micro Lamps Inc. (USA)
E3 American Telephone and Telegraph Co (USA)
Related Parts
3110-00-100-8514INTERCHANGEABLE
BEARING,BALL,THRUST
E3
6505-00-153-8379INTERCHANGEABLE
EUGENOL
06-02077
5120-00-223-6942INTERCHANGEABLE
EXTRACTOR,SCREW
5977-00-226-1112INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
6A1
1730-00-247-1569INTERCHANGEABLE
SLING,AIRCRAFT MAINTENANCE
E3
4910-00-357-6617INTERCHANGEABLE
PLATE PULLING
E3
3120-00-528-6551INTERCHANGEABLE
BUSHING,SLEEVE
E3
5961-00-783-5719INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
A300
5965-00-801-7410INTERCHANGEABLE
LOUDSPEAKER,PERMANENT MAGNET
6A1
3433-01-075-2145INTERCHANGEABLE
TIP,WELDING TORCH
E-3
5210-01-077-8056INTERCHANGEABLE
GAGE,CYLINDER
E3
2530-01-160-0850INTERCHANGEABLE
BLEEDER VALVE,HYDR
R21612

Frequently Asked Questions

What is NSN 6240-00-266-9944?

NSN 6240-00-266-9944 is a Lamp,incandescent, manufactured by Micro Lamps Inc., classified under FSC 6240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6240-00-266-9944?

NSN 6240-00-266-9944 has 9 cross-referenced part numbers: 94006 (Gte Communication Systems Corp), E3 (Lucent Technologies Inc Dba Federal Marketing Group), E3 (At and T Corp), 6A1 (General Electric Co Miniature Lamp Products Dept Lighting Business Group), C78-391 (American National Standards Institute Incorporated Dba American National Standards Institute) and 4 more.

What NSN replaces 6240-00-266-9944?

There are 12 known substitutes for 6240-00-266-9944: 3110-00-100-8514, 6505-00-153-8379, 5120-00-223-6942 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6A-1?

Key specifications for 6A-1: Bulb Light Transmission Characteristic: TRANSPARENT; Emitted Light Characteristic: WHITE; Filament Heavy Duty Service Rating: NOT RATED; Bulb Style: T (TUBULAR). 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-00-266-9944 still in active supply?

NSN 6240-00-266-9944 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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