PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12B1Lamp,incandescent

General Dynamics Mission Systems, Inc. · NSN 6240-00-935-7037 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-935-7037 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-935-7037. Primary manufacturer part number: 12B1.
Features
  • Lamp,incandescent — FSC 6240
  • Bulb Style: T (TUBULAR)
  • Base Style: TELEPHONE SLIDE NUMBER ONE
  • Bulb Light Transmission Characteristic: TRANSPARENT
  • Light Output Rating: 200.000 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
  • Filament Heavy Duty Service Rating: NOT RATED
  • Wattage Rating: 0.420 WATTS
  • Emitted Light Characteristic: COLORLESS
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-935-7037, 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 Dynamics Mission Systems, Inc.. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 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
NSN6240-00-935-7037
Primary Part Number12B1
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGeneral Dynamics Mission Systems, Inc.
StatusACTIVE
Bulb StyleT (TUBULAR)
Base StyleTELEPHONE SLIDE NUMBER ONE
Bulb Light Transmission CharacteristicTRANSPARENT
Light Output Rating200.000 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
Filament Heavy Duty Service RatingNOT RATED
Wattage Rating0.420 WATTS
Emitted Light CharacteristicCOLORLESS
Filament DesignationC-2V V
Rated Average LifeINDEFINITE LONG
Voltage Rating12.000 VOLTS NOMINAL
Current Rating for Which Designed0.035 AMPERES NOMINAL
Bulb DesignatorT-2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3441-00-009-2848 INTERCHANGEABLE
Forming Machine,sheet Metal,slip
3110-00-156-1750 INTERCHANGEABLE
Bearing,ball,thrust
5905-00-283-3927 INTERCHANGEABLE
Resistor,current Regulating
6625-00-445-6930 INTERCHANGEABLE
Test Set,telephone
6240-00-469-624212B INTERCHANGEABLE
Lamp,incandescent
General Dynamics Mission Systems, Inc.
5315-00-482-1479 INTERCHANGEABLE
Pin,straight,headless
5935-00-539-119212B INTERCHANGEABLE
Jack,telephone
Switchcraft Inc.
5307-00-627-3446 INTERCHANGEABLE
Stud,plain
6625-00-649-4929 INTERCHANGEABLE
Lead,test
6635-00-663-457612B INTERCHANGEABLE
Tester,material Hardness
Sun Tec Corp
Cross-Reference Index
Part NumberManufacturer
12B Shelly Associates Inc. (USA)
12B1 Zf Industrieantriebe Witten Gmbh (DEU)
12B1 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
12B1 PRIMARY General Dynamics Mission Systems, Inc. (USA)
12B-1 Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
12B Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
Related Parts
3441-00-009-2848INTERCHANGEABLE
FORMING MACHINE,SHEET METAL,SLIP
3110-00-156-1750INTERCHANGEABLE
BEARING,BALL,THRUST
5905-00-283-3927INTERCHANGEABLE
RESISTOR,CURRENT REGULATING
6625-00-445-6930INTERCHANGEABLE
TEST SET,TELEPHONE
6240-00-469-6242INTERCHANGEABLE
LAMP,INCANDESCENT
12B
5315-00-482-1479INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5935-00-539-1192INTERCHANGEABLE
JACK,TELEPHONE
12B
5307-00-627-3446INTERCHANGEABLE
STUD,PLAIN
6625-00-649-4929INTERCHANGEABLE
LEAD,TEST
6635-00-663-4576INTERCHANGEABLE
TESTER,MATERIAL HARDNESS
12B
4730-00-781-9629INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
H4S/S
6110-00-889-0990INTERCHANGEABLE
PANEL,CONTROL,ELECTRICAL-ELECTRO

Frequently Asked Questions

What is NSN 6240-00-935-7037?

NSN 6240-00-935-7037 is a Lamp,incandescent, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-935-7037?

NSN 6240-00-935-7037 has 6 cross-referenced part numbers: 12B (Shelly Associates Inc.), 12B1 (Zf Industrieantriebe Witten Gmbh), 12B1 (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps), 12B1 (General Dynamics Mission Systems, Inc.), 12B-1 (Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company) and 1 more.

What NSN replaces 6240-00-935-7037?

There are 12 known substitutes for 6240-00-935-7037: 3441-00-009-2848, 3110-00-156-1750, 5905-00-283-3927 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12B1?

Key specifications for 12B1: Overall Length: 1.688 INCHES MAXIMUM IN; Bulb Style: T (TUBULAR); Base Style: TELEPHONE SLIDE NUMBER ONE; Bulb Light Transmission Characteristic: TRANSPARENT. 14 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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