PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

128Lamp,incandescent

Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch · NSN 6240-00-123-7648 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-123-7648 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-123-7648. Primary manufacturer part number: 128.
Features
  • Lamp,incandescent — FSC 6240
  • Base Style: FLEXIBLE WIRE LEADS
  • Rated Average Life: HOURS
  • Voltage Rating: 5.000 VOLTS NOMINAL
  • Bulb Style: T (TUBULAR)
  • Bulb Designator: T-3/4
  • Current Rating for Which Designed: 0.115 AMPERES NOMINAL
  • 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 6240-00-123-7648, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN6240-00-123-7648
Primary Part Number128
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerElectro Switch Corp. Dba Oak Grisgsby Div Electroswitch
StatusACTIVE
Base StyleFLEXIBLE WIRE LEADS
Rated Average LifeHOURS
Voltage Rating5.000 VOLTS NOMINAL
Bulb StyleT (TUBULAR)
Bulb DesignatorT-3/4
Current Rating for Which Designed0.115 AMPERES NOMINAL
Emitted Light CharacteristicWHITE
Bulb Light Transmission CharacteristicTRANSPARENT
Average Life Rating in Hours40000.0
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-068-8357 INTERCHANGEABLE
Screw,machine
1560-00-320-85127155 INTERCHANGEABLE
Extension Assy,e,ha
Solar Turbines Incorporated Dba Solar Turbines Incorporated
5330-00-500-37267155 INTERCHANGEABLE
Gasket
Robert H Wager Co Inc
3439-00-947-5389 INTERCHANGEABLE
Tip,electric Soldering Iron
5950-01-013-7367984751-1C INTERCHANGEABLE
Transformer,audio Frequency
Raytheon Company Dba Raytheon
5995-01-028-9324467098-801 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Raytheon Company
4320-01-130-7230DS-936294 INTERCHANGEABLE
Plate,cam,pump
Eaton Aerospace, Llc Dba Jackson South
4810-01-222-79777155 INTERCHANGEABLE
Valve,solenoid
Edro Corporation, the Dba Edro Corp
5998-01-241-54237155 INTERCHANGEABLE
Circuit Card Assembly
Quarterwave Corp.
5950-01-244-1694 INTERCHANGEABLE
Transformer,power
Cross-Reference Index
Part NumberManufacturer
128 PRIMARY Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
060-293 Ampex Data Systems Corp Computer Products Div (USA)
7155 Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
Related Parts
5305-00-068-8357INTERCHANGEABLE
SCREW,MACHINE
1560-00-320-8512INTERCHANGEABLE
EXTENSION ASSY,E,HA
7155
5330-00-500-3726INTERCHANGEABLE
GASKET
7155
3439-00-947-5389INTERCHANGEABLE
TIP,ELECTRIC SOLDERING IRON
5950-01-013-7367INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
984751-1C
5995-01-028-9324INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
467098-801
4320-01-130-7230INTERCHANGEABLE
PLATE,CAM,PUMP
DS-936294
4810-01-222-7977INTERCHANGEABLE
VALVE,SOLENOID
7155
5998-01-241-5423INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
7155
5950-01-244-1694INTERCHANGEABLE
TRANSFORMER,POWER
5950-01-268-7308INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
7155
4820-01-295-2441INTERCHANGEABLE
VALVE,PLUG
9559T4CC

Frequently Asked Questions

What is NSN 6240-00-123-7648?

NSN 6240-00-123-7648 is a Lamp,incandescent, manufactured by Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-123-7648?

NSN 6240-00-123-7648 has 3 cross-referenced part numbers: 128 (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch), 060-293 (Ampex Data Systems Corp Computer Products Div), 7155 (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron).

What NSN replaces 6240-00-123-7648?

There are 12 known substitutes for 6240-00-123-7648: 5305-00-068-8357, 1560-00-320-8512, 5330-00-500-3726 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 128?

Key specifications for 128: Base Style: FLEXIBLE WIRE LEADS; Rated Average Life: HOURS; Voltage Rating: 5.000 VOLTS NOMINAL; Overall Length: 0.350 INCHES NOMINAL IN. 10 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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