The Shaft,shouldered, cataloged under National Stock Number 3040-00-473-2001, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-473-2001 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.4530 INCHES NOMINAL IN |
| First End Spline Major Diameter | 0.3970 INCHES MINIMUM AND 0.4000 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.260 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| First End Style | SPLINED (STRAIGHT) |
| First End Spline Length | 0.453 INCHES NOMINAL IN |
| First End Spline Quantity | 12 |
| End Similarity | IDENTICAL |
| First End Spline Minor Diameter | 0.3250 INCHES MINIMUM AND 0.3330 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 67874 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-473-2001 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4320-01-190-0640. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-473-2001: Step Quantity: 3; First End Diameter: 0.4530 INCHES NOMINAL IN; First End Spline Major Diameter: 0.3970 INCHES MINIMUM AND 0.4000 INCHES MAXIMUM IN; Largest Step Diameter: 0.260 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN. 10 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.