The Shaft,shouldered, cataloged under National Stock Number 3040-01-383-5696, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-383-5696 |
| Primary Part Number | 6405258-201 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Step Quantity | 5 |
| First End Diameter | 1.1648 INCHES MINIMUM AND 1.1730 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.625 INCHES NOMINAL IN |
| First End External Thread Length | 0.590 INCHES NOMINAL IN |
| First End Style | EXTERNALLY THREADED AND FLAT KEYWAY |
| Material Document and Classification | MIL-S-5000 COND C-2 MIL SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.134 INCHES NOMINAL IN |
| End Similarity | IDENTICAL |
| Material | STEEL |
| First End Keyway Width | 0.1880 INCHES MINIMUM AND 0.2040 INCHES MAXIMUM 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 |
|---|---|
| 752-6405258-201 | Naval Sea Systems Command (USA) |
| 6405258-201 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6405258 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-383-5696 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-383-5696 has 2 manufacturer part numbers on file: 752-6405258-201 (Naval Sea Systems Command), 6405258-201 (Naval Sea Systems Command).
Key specifications for 6405258-201: Step Quantity: 5; First End Diameter: 1.1648 INCHES MINIMUM AND 1.1730 INCHES MAXIMUM IN; Largest Step Diameter: 1.625 INCHES NOMINAL IN; First End External Thread Length: 0.590 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.