The Shaft,shouldered, cataloged under National Stock Number 3040-01-413-4071, 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 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-413-4071 |
| Primary Part Number | 845-6556494 |
| 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 | 0.4690 INCHES NOMINAL IN |
| Second End Diameter | 1.3350 INCHES NOMINAL IN |
| Second End Step Length | 0.1690 INCHES NOMINAL IN |
| Largest Step Diameter | 1.3350 INCHES NOMINAL IN |
| First End External Thread Length | 0.4400 INCHES NOMINAL IN |
| First End Style | EXTERNALLY THREADED AND FLAT KEYWAY |
| Second End Angle Between Flats | 180.0 DEGREES NOMINAL |
| First End Keyway Depth | 0.0630 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | TWO FLATS |
| Material | STEEL |
| External Keyway Length | 0.59000 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.1250 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 |
|---|---|
| 845-6556494 PRIMARY | Naval Sea Systems Command (USA) |
| 845-6603141-45 | Naval Sea Systems Command (USA) |
NSN 3040-01-413-4071 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-413-4071 has 2 manufacturer part numbers on file: 845-6556494 (Naval Sea Systems Command), 845-6603141-45 (Naval Sea Systems Command).
Key specifications for 845-6556494: Step Quantity: 4; First End Diameter: 0.4690 INCHES NOMINAL IN; Second End Diameter: 1.3350 INCHES NOMINAL IN; Second End Step Length: 0.1690 INCHES NOMINAL IN. 14 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.