PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

503221Plate,mounting,case,diffuser

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 2840-00-690-2090 · FSC 2840 · No Item Name Available
Verified by PartsTable
NSN 2840-00-690-2090 — this item is cataloged by the U.S. Government under National Stock Number 2840-00-690-2090. Primary manufacturer part number: 503221.
Features
  • Plate,mounting,case,diffuser — FSC 2840
  • General Characteristics Item Description: CRES,AMS 5504,ROCKWELL C30-38 HARDNESS,1.734-1.858 IN. LG,1.638-1.762 IN. W,0.071-0.085 IN. W IN
  • FSC Application Data: AIRCRAFT JET ENGINE
  • 2 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 Plate,mounting,case,diffuser, cataloged under National Stock Number 2840-00-690-2090, 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 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2840-00-690-2090
Primary Part Number503221
Item NamePlate,mounting,case,diffuser
FSC / FSG2840 / 28 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
General Characteristics Item DescriptionCRES,AMS 5504,ROCKWELL C30-38 HARDNESS,1.734-1.858 IN. LG,1.638-1.762 IN. W,0.071-0.085 IN. W IN
FSC Application DataAIRCRAFT JET ENGINE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2910-00-670-2475 INTERCHANGEABLE
Nozzle,ejector,turb
5962-01-481-921550322-1 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
5305-01-552-5694503221 INTERCHANGEABLE
Screw,machine
Clamshell Structures, Inc
Cross-Reference Index
Part NumberManufacturer
503221 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
503221 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
2910-00-670-2475INTERCHANGEABLE
NOZZLE,EJECTOR,TURB
5962-01-481-9215INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
50322-1
5305-01-552-5694INTERCHANGEABLE
SCREW,MACHINE
503221

Frequently Asked Questions

What is NSN 2840-00-690-2090?

NSN 2840-00-690-2090 is a Plate,mounting,case,diffuser, 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 2840-00-690-2090?

NSN 2840-00-690-2090 has 2 cross-referenced part numbers: 503221 (Turbo Power & Marine System Inc Sub of United Technologies Corp), 503221 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 2840-00-690-2090?

There are 3 known substitutes for 2840-00-690-2090: 2910-00-670-2475, 5962-01-481-9215, 5305-01-552-5694. Verify interchangeability with system specifications before substitution.

What are the specifications of 503221?

Key specifications for 503221: General Characteristics Item Description: CRES,AMS 5504,ROCKWELL C30-38 HARDNESS,1.734-1.858 IN. LG,1.638-1.762 IN. W,0.071-0.085 IN. W IN; FSC Application Data: AIRCRAFT JET ENGINE; End Item Identification: ENGINE MODEL TF33. 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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