PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F5TT27KLamp,fluorescent

Gte Products Corp Sylvania Miniature Lighting Div · NSN 6240-01-344-9531 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-344-9531 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-344-9531. Primary manufacturer part number: F5TT27K.
Features
  • Lamp,fluorescent — FSC 6240
  • Starting Characteristic: PREHEAT
  • Bulb Style: T ("U" SHAPED TUBULAR)
  • Emitted Light Characteristic: WHITE
  • Wattage Rating: 5.000 WATTS
  • Average Life Rating in Hours: 10000.0
  • Base Style: MEDIUM TWO PIN
  • Rated Average Life: HOURS
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,fluorescent, cataloged under National Stock Number 6240-01-344-9531, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Gte Products Corp Sylvania Miniature Lighting Div. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 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
NSN6240-01-344-9531
Primary Part NumberF5TT27K
Item NameLamp,fluorescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGte Products Corp Sylvania Miniature Lighting Div
StatusACTIVE
Starting CharacteristicPREHEAT
Bulb StyleT ("U" SHAPED TUBULAR)
Emitted Light CharacteristicWHITE
Wattage Rating5.000 WATTS
Average Life Rating in Hours10000.0
Base StyleMEDIUM TWO PIN
Rated Average LifeHOURS
Bulb DesignatorT4/G23
Criticality Code JustificationFEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4330-00-028-390019335 INTERCHANGEABLE
Case
Arvinmeritor Inc
3110-00-156-67907405C1TX9 INTERCHANGEABLE
Bearing,ball,annular
Nsk Corp Bearing Div
3120-00-375-2877 INTERCHANGEABLE
Bushing Pump Shaft
5310-00-550-275120405 INTERCHANGEABLE
Washer,key
Parker-Hannifin Corporation Dba Control Systems Division
5310-00-595-761620405 INTERCHANGEABLE
Washer,keyway
Safran Power Usa Llc
4130-00-769-841619355 INTERCHANGEABLE
Rod,brake
Hdt Expeditionary Systems Inc
3130-00-838-5260SAF22513 INTERCHANGEABLE
Bearing Unit,roller
Skf Usa Inc.
5962-01-034-5184SNJ55121J INTERCHANGEABLE
Microcircuit,digital
Texas Instruments Incorporated
5975-01-055-51615040 INTERCHANGEABLE
Coupling,electrical Conduit
Abb Installation Products Inc
4330-01-113-2550 INTERCHANGEABLE
Filter,fluid
Cross-Reference Index
Part NumberManufacturer
19355 General Electric Company Dba Ge (USA)
F5TT/27K Osram Sylvania Inc. (USA)
DS005 Osram Corp Div of Siemens Corp (USA)
20405 Gte Products Corp Sylvania Miniature Lighting Div (USA)
04-6677-33233-8 Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
F5TT27K PRIMARY Gte Products Corp Sylvania Miniature Lighting Div (USA)
PL-S5W/27 Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
DT5/27 Eiko, Ltd. Div Eiko Global, Llc (USA)
F5TT/27K Osram Corp Div of Siemens Corp (USA)
F5BX/SPX27/10PK General Electric Company Dba Ge (USA)
Related Parts
4330-00-028-3900INTERCHANGEABLE
CASE
19335
3110-00-156-6790INTERCHANGEABLE
BEARING,BALL,ANNULAR
7405C1TX9
3120-00-375-2877INTERCHANGEABLE
BUSHING PUMP SHAFT
5310-00-550-2751INTERCHANGEABLE
WASHER,KEY
20405
5310-00-595-7616INTERCHANGEABLE
WASHER,KEYWAY
20405
4130-00-769-8416INTERCHANGEABLE
ROD,BRAKE
19355
3130-00-838-5260INTERCHANGEABLE
BEARING UNIT,ROLLER
SAF22513
5962-01-034-5184INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
SNJ55121J
5975-01-055-5161INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
5040
4330-01-113-2550INTERCHANGEABLE
FILTER,FLUID
3020-01-182-1800INTERCHANGEABLE
GEAR,SPUR
4012217-C
6520-01-224-9684INTERCHANGEABLE
DRILL,PULP CANAL,DENTAL
19355

Frequently Asked Questions

What is NSN 6240-01-344-9531?

NSN 6240-01-344-9531 is a Lamp,fluorescent, manufactured by Gte Products Corp Sylvania Miniature Lighting Div, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-01-344-9531?

NSN 6240-01-344-9531 has 10 cross-referenced part numbers: 19355 (General Electric Company Dba Ge), F5TT/27K (Osram Sylvania Inc.), DS005 (Osram Corp Div of Siemens Corp), 20405 (Gte Products Corp Sylvania Miniature Lighting Div), 04-6677-33233-8 (Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company) and 5 more.

What NSN replaces 6240-01-344-9531?

There are 12 known substitutes for 6240-01-344-9531: 4330-00-028-3900, 3110-00-156-6790, 3120-00-375-2877 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F5TT27K?

Key specifications for F5TT27K: Special Features: ENERGYSAVER;SPX27; Starting Characteristic: PREHEAT; Bulb Style: T ("U" SHAPED TUBULAR); Emitted Light Characteristic: WHITE. 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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