Disk and Hub, Compressor, Aircraft2840-00-775-7520
NSN 2840-00-775-7520 · NIIN 007757520 · Part number 746421
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · FSC 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components · FSG 28 — Engines, Turbines, and Components · CAGE 77445
Government record, cited
NSN 2840-00-775-7520 — this item is cataloged by the U.S. Government under National Stock Number 2840-00-775-7520. Manufacturer of record part number: 746421.
Also searched as2840-00-775-7520 ·
2840007757520 ·
NIIN 007757520 ·
00-775-7520 ·
FSC 2840 Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components · CAGE 77445 · 746421 · 586801 · 854321
Manufacturer of record: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Identification
NSN: 2840-00-775-7520
NIIN: 007757520
FSC: 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
FSG: 28 — Engines, Turbines, and Components
Primary part number: 746421
Manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
General Description
The Disk and Hub,compressor,aircraft, cataloged under National Stock Number 2840-00-775-7520, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
2840-00-775-7520
Primary Part Number
746421
Item Name
Disk and Hub,compressor,aircraft
FSC / FSG
2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
Manufacturer
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Status
ACTIVE
Design Type
AXIAL COMPRESSOR
Engine Section Location
COMPRESSOR
Material
TITANIUM ALLOY DISK
Material
TITANIUM ALLOY HUB
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
F
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5945-01-114-0525POSSIBLE MATCH
RELAY,ELECTROMAGNETIC
Possible match (shared part number)
5930-01-314-369685432-1POSSIBLE MATCH
SWITCH,ELECTRICAL
Possible match (shared part number)Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
1680-01-577-13277-4642-1POSSIBLE MATCH
RETAINING RING,AIRC
Possible match (shared part number)Triumph Actuation Systems - Yakima, Llc Dba Triumph Actuation Systems - Yakima Llc
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5945-01-114-0525POSSIBLE MATCH
RELAY,ELECTROMAGNETIC
5930-01-314-3696POSSIBLE MATCH
SWITCH,ELECTRICAL
85432-1
1680-01-577-1327POSSIBLE MATCH
RETAINING RING,AIRC
7-4642-1
Frequently Asked Questions
What is NSN 2840-00-775-7520?
NSN 2840-00-775-7520 is a Disk and Hub,compressor,aircraft, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
What part numbers are listed for NSN 2840-00-775-7520?
NSN 2840-00-775-7520 has 3 manufacturer part numbers on file: 586801 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 854321 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 746421 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
What NSN replaces 2840-00-775-7520?
3 possible matches (shared part number, not a government interchangeability claim): 5945-01-114-0525, 5930-01-314-3696, 1680-01-577-1327. Verify interchangeability with system specifications before substitution.
What are the specifications of 746421?
Key specifications for 746421: Design Type: AXIAL COMPRESSOR; Engine Section Location: COMPRESSOR; Special Features: WAS DISK AND HUB,AXIAL COMPRESSOR,TURBINE ENGINE; End Item Identification: TF33 AIRCRAFT ENGINE. 4 specifications are documented in the U.S. Government catalog.
Is NSN 2840-00-775-7520 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 2840-00-775-7520?
NSN 2840-00-775-7520 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.