The Shaft,shouldered, cataloged under National Stock Number 3040-00-583-2507, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-583-2507 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| FSC Application Data | ENGINE AIRCRAFT |
| Step Quantity | 4 |
| First End Diameter | 0.3750 INCHES NOMINAL IN |
| Second End Diameter | 0.4680 INCHES NOMINAL IN |
| Largest Step Diameter | 0.675 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 0.3960 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| Second End Spline Major Diameter | 0.4680 INCHES NOMINAL IN |
| First End Keyway Depth | 0.098 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 14 |
| Second End Pressure Angle | 30.0000 DEGREES NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| Material | STEEL |
| Second End Pitch Diameter | 0.4270 INCHES NOMINAL IN |
| External Keyway Length | 0.750 INCHES NOMINAL FIRST END IN |
| Second End Spline Length | 0.870 INCHES NOMINAL IN |
| First End Keyway Width | 0.1050 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 |
| Reference | Meaning |
|---|---|
| 4018T38P01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-583-2507 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-583-2507: Surface Finish: 63.0 MICROINCHES; FSC Application Data: ENGINE AIRCRAFT; Step Quantity: 4; First End Diameter: 0.3750 INCHES NOMINAL IN. 19 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.