PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

578770Brace,fan Case

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 2840-01-159-6774 · FSC 2840 · No Item Name Available
Verified by PartsTable
NSN 2840-01-159-6774 — this item is cataloged by the U.S. Government under National Stock Number 2840-01-159-6774. Primary manufacturer part number: 578770.
Features
  • Brace,fan Case — FSC 2840
  • General Characteristics Item Description: STEEL AMS 5613,3.640 MIN 3.720 MAX IN. LG,0.490 MIN 0.510 MAX IN. W,0.120 MIN 0.130 MAX IN. DIA 2 HOLES
  • 1 verified cross-reference
  • 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 Brace,fan Case, cataloged under National Stock Number 2840-01-159-6774, 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 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2840-01-159-6774
Primary Part Number578770
Item NameBrace,fan Case
FSC / FSG2840 / 28 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
General Characteristics Item DescriptionSTEEL AMS 5613,3.640 MIN 3.720 MAX IN. LG,0.490 MIN 0.510 MAX IN. W,0.120 MIN 0.130 MAX IN. DIA 2 HOLES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-01-132-6866 INTERCHANGEABLE
Valve,mixing,thermo
Cross-Reference Index
Part NumberManufacturer
578770 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
4820-01-132-6866INTERCHANGEABLE
VALVE,MIXING,THERMO

Frequently Asked Questions

What is NSN 2840-01-159-6774?

NSN 2840-01-159-6774 is a Brace,fan Case, 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 2840-01-159-6774?

NSN 2840-01-159-6774 has 1 cross-referenced part number: 578770 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 2840-01-159-6774?

There is 1 known substitute for 2840-01-159-6774: 4820-01-132-6866. Verify interchangeability with system specifications before substitution.

What are the specifications of 578770?

Key specifications for 578770: General Characteristics Item Description: STEEL AMS 5613,3.640 MIN 3.720 MAX IN. LG,0.490 MIN 0.510 MAX IN. W,0.120 MIN 0.130 MAX IN. DIA 2 HOLES; End Item Identification: ACFT ENG TF33. 2 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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