The Shaft,shouldered, cataloged under National Stock Number 3040-01-594-7489, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 21 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.
| Parameter | Value |
|---|---|
| NSN | 3040-01-594-7489 |
| Primary Part Number | 1550291 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| First End Pitch Diameter | 0.708 INCHES NOMINAL IN |
| Step Quantity | 4 |
| First End Diameter | 0.669 INCHES NOMINAL IN |
| First End Spline Major Diameter | 1.365 INCHES NOMINAL IN |
| Second End Diameter | 1.365 INCHES NOMINAL IN |
| Largest Step Diameter | 1.906 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 1.233 INCHES NOMINAL IN |
| First End Style | SPLINED (INVOLUTE) |
| Second End Spline Major Diameter | 1.365 INCHES NOMINAL IN |
| First End Pressure Angle | 1.291 RADIANS NOMINAL |
| First End Spline Length | 0.750 INCHES NOMINAL IN |
| First End Spline Quantity | 21 |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 21 |
| First End Grooved Flat Length | 0.669 INCHES NOMINAL IN |
| Second End Pressure Angle | 0.093 RADIANS NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| First End Spline Minor Diameter | 3.718 INCHES NOMINAL IN |
| Material | STEEL |
| Second End Pitch Diameter | 1.312 INCHES NOMINAL IN |
| Second End Spline Length | 1.687 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 |
|---|---|
| 1550291 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3040-01-594-7489 is a Shaft,shouldered, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-594-7489 has 1 manufacturer part number on file: 1550291 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1550291: First End Pitch Diameter: 0.708 INCHES NOMINAL IN; Step Quantity: 4; First End Diameter: 0.669 INCHES NOMINAL IN; First End Spline Major Diameter: 1.365 INCHES NOMINAL IN. 21 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.