PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

434990Shield,heat,aircraft Gas Turbine

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 2840-00-816-8637 · FSC 2840 · No Item Name Available
Verified by PartsTable
NSN 2840-00-816-8637 — this item is cataloged by the U.S. Government under National Stock Number 2840-00-816-8637. Primary manufacturer part number: 434990.
Features
  • Shield,heat,aircraft Gas Turbine — FSC 2840
  • Criticality Code Justification: AGAV
  • 12 verified cross-references
  • Primary manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Shield,heat,aircraft Gas Turbine, cataloged under National Stock Number 2840-00-816-8637, 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 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2840-00-816-8637
Primary Part Number434990
Item NameShield,heat,aircraft Gas Turbine
FSC / FSG2840 / 28 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Criticality Code JustificationAGAV
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5305-01-101-8537ST3M455-7L9M INTERCHANGEABLE
Screw,close Tolerance
The Boeing Company Div Defense
4730-01-212-57754-8 070120CA INTERCHANGEABLE
Adapter,straight,tube to Boss
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
434990 Rtx Corporation Div Pratt & Whitney (USA)
434990 Union Machine Co of Lynn, Inc (USA)
434990 Enjet Aero Bloomfield, Llc (USA)
434990 Hanwha Aerospace Usa Llc Div Edac Nd, Inc. (USA)
434990 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
434990 Demusz Mfg. Co., Inc. (USA)
434990 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
434990 Thermal Structures, Inc (USA)
434990 Agc Acquisition Llc Div Agc Acquisiton Llc (USA)
434990 Thermal Ceramics Inc Dba Thermal Ceramics Inc (USA)
434990 Dover Tool of Connecticut, Llc Div Na (USA)
434990 Electro-Methods, L.p. (USA)
Related Parts
5305-01-101-8537INTERCHANGEABLE
SCREW,CLOSE TOLERANCE
ST3M455-7L9M
4730-01-212-5775INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
4-8 070120CA

Frequently Asked Questions

What is NSN 2840-00-816-8637?

NSN 2840-00-816-8637 is a Shield,heat,aircraft Gas Turbine, 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 2840-00-816-8637?

NSN 2840-00-816-8637 has 12 cross-referenced part numbers: 434990 (Rtx Corporation Div Pratt & Whitney), 434990 (Union Machine Co of Lynn, Inc), 434990 (Enjet Aero Bloomfield, Llc), 434990 (Hanwha Aerospace Usa Llc Div Edac Nd, Inc.), 434990 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney) and 7 more.

What NSN replaces 2840-00-816-8637?

There are 2 known substitutes for 2840-00-816-8637: 5305-01-101-8537, 4730-01-212-5775. Verify interchangeability with system specifications before substitution.

What are the specifications of 434990?

Key specifications for 434990: Criticality Code Justification: AGAV; End Item Identification: ACFT ENG TF-33; Special Features: FOR COMPRESSOR REAR BEARING. 3 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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