PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

505104Housing,gearbox,turbine Engine

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 2840-00-021-7661 · FSC 2840 · No Item Name Available
Verified by PartsTable
NSN 2840-00-021-7661 — this item is cataloged by the U.S. Government under National Stock Number 2840-00-021-7661. Primary manufacturer part number: 505104.
Features
  • Housing,gearbox,turbine Engine — FSC 2840
  • Engine Section Location: ACCESSORY GEARBOX
  • Criticality Code Justification: ABHP AND FEAT AND CZBJ
  • 14 verified cross-references
  • Primary manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Applications
  • Mechanical power generation
  • Drive system operation
  • Auxiliary equipment operation
General Description

The Housing,gearbox,turbine Engine, cataloged under National Stock Number 2840-00-021-7661, is classified within Federal Supply Class 2840 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2840-00-021-7661
Primary Part Number505104
Item NameHousing,gearbox,turbine Engine
FSC / FSG2840 / 28 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Engine Section LocationACCESSORY GEARBOX
Criticality Code JustificationABHP AND FEAT AND CZBJ
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6515-00-335-7900505104 INTERCHANGEABLE
Forceps,laryngeal
Teleflex Medical Incorporated Dba Teleflex Medical Inc
2530-00-426-1027505104 INTERCHANGEABLE
Oil Seal Assembly
Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems
5961-00-921-3781 INTERCHANGEABLE
Semiconductor Device,diode
4220-01-693-7949505-104 INTERCHANGEABLE
Parts Kit,diving Helmet
Kirby Morgan Dive Systems Inc
Cross-Reference Index
Part NumberManufacturer
505104 Florida Tool and Gage Inc (USA)
505104 Paramount Machine Company, Inc. Dba Paramount Machine Co Inc (USA)
505104 S & L Aerospace Metals Llc (USA)
505104 Jet Industries, Inc. Dba Jet Industries Inc (USA)
505104 Hanwha Aerospace Usa Llc (USA)
505104 Electro-Methods, L.p. (USA)
505104 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
505104 Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co (USA)
505104 Accurate Products Co (USA)
505104 Union Machine Co of Lynn, Inc (USA)
505104 Kerns Manufacturing Corp. Dba Kerns Manufacturing Corp (USA)
505104 Ambel Precision Manufacturing Corporation (USA)
505104 Aircraft Components Inc (USA)
505104 Rtx Corporation Div Pratt & Whitney (USA)
Related Parts
6515-00-335-7900INTERCHANGEABLE
FORCEPS,LARYNGEAL
505104
2530-00-426-1027INTERCHANGEABLE
OIL SEAL ASSEMBLY
505104
5961-00-921-3781INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
4220-01-693-7949INTERCHANGEABLE
PARTS KIT,DIVING HELMET
505-104

Frequently Asked Questions

What is NSN 2840-00-021-7661?

NSN 2840-00-021-7661 is a Housing,gearbox,turbine Engine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2840 (No Item Name Available). Status: active.

What are the part numbers for NSN 2840-00-021-7661?

NSN 2840-00-021-7661 has 14 cross-referenced part numbers: 505104 (Florida Tool and Gage Inc), 505104 (Paramount Machine Company, Inc. Dba Paramount Machine Co Inc), 505104 (S & L Aerospace Metals Llc), 505104 (Jet Industries, Inc. Dba Jet Industries Inc), 505104 (Hanwha Aerospace Usa Llc) and 9 more.

What NSN replaces 2840-00-021-7661?

There are 4 known substitutes for 2840-00-021-7661: 6515-00-335-7900, 2530-00-426-1027, 5961-00-921-3781 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 505104?

Key specifications for 505104: Engine Section Location: ACCESSORY GEARBOX; Special Features: T.O. 2J-TF33-4; SHAFT GEAR-ACCESSORY DRIVE; PUMP-OIL; COMPRESSOR FRONT AND REAR TURBINE BEARING; Overall Length: 2.122 INCHES NOMINAL IN; End Item Identification: TF33 AIRCRAFT ENGINE. 5 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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