The Plate,retaining,shaft, cataloged under National Stock Number 3040-00-397-4753, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Textron Aviation Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-397-4753 |
| Primary Part Number | 278-381 |
| Item Name | Plate,retaining,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Mounting Hole Quantity | 6 |
| Mounting Hole Diameter | 0.257 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Shape | ROUND |
| Outside Diameter | 8.957 INCHES NOMINAL IN |
| Aperture Diameter | 3.188 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Thickness | 0.051 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 278-381 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 278-381 | 3/9 Design control — primary reference Beechcraft Corporation Dba Textron Aviation |
NSN 3040-00-397-4753 is a Plate,retaining,shaft, manufactured by Textron Aviation Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-397-4753 has 1 manufacturer part number on file: 278-381 (Textron Aviation Inc).
Key specifications for 278-381: Mounting Hole Quantity: 6; Mounting Hole Diameter: 0.257 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN; Shape: ROUND; Outside Diameter: 8.957 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.