NSN 4920-01-394-7686 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-394-7686. Manufacturer of record part number: PWA81149.
Also searched as4920-01-394-7686 ·
4920013947686 ·
NIIN 013947686 ·
01-394-7686 ·
FSC 4920 Aircraft Maintenance and Repair Shop Specialized Equipment · CAGE 77445 · PWA81149
Nearby stock numbers← 4920-01-394-7684 Plate, Support
·
4920-01-394-7772 Fixture, Machining, Aircraft Engin →
Features
Ring,supporting Disk — FSC 4920
Overall Diameter: 26.300 INCHES NOMINAL IN
Functional Description: IS REQUIRED TO SUPPORT THE THIRD STAGE DISK FROM THE REAR TO PROVIDE A STOP FOR THE BLADES TO PREVENT CRACKING OF THE BLADE TANG WHEN SEATING IN THE DISK
1 manufacturer part number on file
Manufacturer of record: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Identification
NSN: 4920-01-394-7686
NIIN: 013947686
FSC: 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
FSG: 49 — Maintenance and Repair Shop Equipment
Primary part number: PWA81149
Manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
General Description
The Ring,supporting Disk, cataloged under National Stock Number 4920-01-394-7686, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Status
ACTIVE
Overall Diameter
26.300 INCHES NOMINAL IN
Functional Description
IS REQUIRED TO SUPPORT THE THIRD STAGE DISK FROM THE REAR TO PROVIDE A STOP FOR THE BLADES TO PREVENT CRACKING OF THE BLADE TANG WHEN SEATING IN THE DISK
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
No interchangeability data on file.
Other items in FSC 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4920-00-000-0190
TEST SET,FLIGHT CONTROL SYSTEM
4920-00-001-1405
4920-00-001-1405 · Item name not on file
4920-00-001-1716
4920-00-001-1716 · Item name not on file
4920-00-001-1744
4920-00-001-1744 · Item name not on file
4920-00-001-1745
4920-00-001-1745 · Item name not on file
4920-00-001-1746
4920-00-001-1746 · Item name not on file
4920-00-001-1747
4920-00-001-1747 · Item name not on file
4920-00-001-1748
4920-00-001-1748 · Item name not on file
Frequently Asked Questions
What is NSN 4920-01-394-7686?
NSN 4920-01-394-7686 is a Ring,supporting Disk, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
What part numbers are listed for NSN 4920-01-394-7686?
NSN 4920-01-394-7686 has 1 manufacturer part number on file: PWA81149 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
What are the specifications of PWA81149?
Key specifications for PWA81149: Overall Height: 1.250 INCHES NOMINAL IN; Overall Diameter: 26.300 INCHES NOMINAL IN; Special Features: LOW PRESSURE TURBINE; Functional Description: IS REQUIRED TO SUPPORT THE THIRD STAGE DISK FROM THE REAR TO PROVIDE A STOP FOR THE BLADES TO PREVENT CRACKING OF THE BLADE TANG WHEN SEATING IN THE DISK. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4920-01-394-7686 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.
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.