The Shaft,shouldered, cataloged under National Stock Number 3040-01-422-2860, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-422-2860 |
| Primary Part Number | 593-6405216 FIND 6 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Step Quantity | 4 |
| First End Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Diameter | 2.0000 INCHES NOMINAL IN |
| Second End Step Length | 1.0000 INCHES NOMINAL IN |
| Largest Step Diameter | 2.0000 INCHES NOMINAL IN |
| First End Style | PLAIN |
| End Similarity | NOT IDENTICAL |
| Second End Style | SQUARE (ROUND CORNERS) |
| Material | NICKEL ALLOY |
| Second End Width Across Flats | 0.7500 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 |
|---|---|
| 593-6405216 FIND 6 PRIMARY | Naval Sea Systems Command (USA) |
| 211074803 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| DF7501-101 FIND 6 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| DF7501-101 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3040-01-422-2860 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-422-2860 has 2 manufacturer part numbers on file: 593-6405216 FIND 6 (Naval Sea Systems Command), 211074803 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-425-6860. Verify interchangeability with system specifications before substitution.
Key specifications for 593-6405216 FIND 6: Step Quantity: 4; First End Diameter: 0.7500 INCHES NOMINAL IN; Second End Diameter: 2.0000 INCHES NOMINAL IN; Second End Step Length: 1.0000 INCHES NOMINAL 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.