NSN 4920-01-397-4405 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-397-4405. Manufacturer of record part number: PWA81492.
Also searched as4920-01-397-4405 ·
4920013974405 ·
NIIN 013974405 ·
01-397-4405 ·
FSC 4920 Aircraft Maintenance and Repair Shop Specialized Equipment · CAGE 77445 · PWA81492
Nearby stock numbers← 4920-01-397-4404 Base, Bearing Support
·
4920-01-397-4480 Test Set Group, Countermeasures →
Features
Inspection Ring Set — FSC 4920
Overall Diameter: 33.500 INCHES NOMINAL IN
Functional Description: IS USED TO ROUND OUT AND RESTRAIN THE TWO HALVES OF THE HIGH PRESSURE COMPRESSOR CASE WHEN MEASURING THE RADII OF THE BLADE TIP RUB STRIP
1 manufacturer part number on file
Manufacturer of record: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Identification
NSN: 4920-01-397-4405
NIIN: 013974405
FSC: 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
FSG: 49 — Maintenance and Repair Shop Equipment
Primary part number: PWA81492
Manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
General Description
The Inspection Ring Set, cataloged under National Stock Number 4920-01-397-4405, 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 (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.
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TEST SET,FLIGHT CONTROL SYSTEM
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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 4920-01-397-4405?
NSN 4920-01-397-4405 is a Inspection Ring Set, 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 4920-01-397-4405?
NSN 4920-01-397-4405 has 1 manufacturer part number on file: PWA81492 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
What are the specifications of PWA81492?
Key specifications for PWA81492: Overall Height: 3.000 INCHES NOMINAL IN; Overall Diameter: 33.500 INCHES NOMINAL IN; Special Features: HPC FRONT CASE; Functional Description: IS USED TO ROUND OUT AND RESTRAIN THE TWO HALVES OF THE HIGH PRESSURE COMPRESSOR CASE WHEN MEASURING THE RADII OF THE BLADE TIP RUB STRIP. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4920-01-397-4405 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 4920-01-397-4405?
NSN 4920-01-397-4405 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.