The Shaft,shouldered, cataloged under National Stock Number 3040-00-398-5780, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-398-5780 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.6250 INCHES NOMINAL IN |
| Second End Diameter | 0.7850 INCHES NOMINAL IN |
| Largest Step Diameter | 0.785 INCHES NOMINAL IN |
| First End External Thread Length | 0.3750 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 0.531 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| Second End Keyway Width | 0.1563 INCHES NOMINAL IN |
| Second End Distance Between Keyway Centers | 8.250 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | TWO WOODRUFF KEYWAYS |
| Material | STEEL |
| External Keyway Length | 0.562 INCHES NOMINAL SECOND END 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 |
|---|---|
| 50376PC191 | 5/9 Secondary reference Todd Shipyards Corp |
| 728-0234-104 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 50376PC191 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 11JCS245PC13 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 220-5-6ASS | 5/9 Secondary reference Todd Shipyards Corp |
| 728-7260-623 | 3/9 Design control — primary reference Aurora Pump a Unit of General Signal Corp |
| 220-5-6ASS | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 50376-1-191 | 5/9 Secondary reference Vigor Shipyards, Llc Div Vigor Shipyards, Inc. |
| 5-6ANC | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 50387-191 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 50387PC191 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 50387PC191 | 5/9 Secondary reference Todd Shipyards Corp |
| 50376-1PC191 | 5/9 Secondary reference Todd Shipyards Corp |
| 220 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 50387-191 | 5/9 Secondary reference Todd Shipyards Corp |
NSN 3040-00-398-5780 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-398-5780: Step Quantity: 3; First End Diameter: 0.6250 INCHES NOMINAL IN; Second End Diameter: 0.7850 INCHES NOMINAL IN; Largest Step Diameter: 0.785 INCHES NOMINAL IN. 13 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.