The Shaft,shouldered, cataloged under National Stock Number 3040-01-486-4731, 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 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-486-4731 |
| Primary Part Number | 342-7067322-81 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Width Across Flats | 0.9950 INCHES NOMINAL IN |
| Second End Hole Diameter | 0.4060 INCHES NOMINAL IN |
| Step Quantity | 4 |
| First End Diameter | 1.2500 INCHES NOMINAL IN |
| Second End Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.4920 INCHES MINIMUM AND 1.4940 INCHES MAXIMUM IN |
| Second End Spline Minor Diameter | 0.8440 INCHES MINIMUM AND 0.8540 INCHES MAXIMUM IN |
| First End Hole Depth | 0.9950 INCHES NOMINAL IN |
| First End Style | SQUARE AND CROSS DRILLED HOLE |
| Second End Spline Major Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-286 FORM-2 COND-ANL;AH FIN-B FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Hole Depth | 0.9980 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 10 |
| First End Hole Diameter | 0.4060 INCHES NOMINAL IN |
| Second End Style | CROSS DRILLED HOLE AND SPLINED (STRAIGHT) |
| Material | NICKEL |
| First End Distance From Hole Center to End | 0.8000 INCHES NOMINAL IN |
| Second End Spline Length | 1.7800 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 |
|---|---|
| 342-7067322-81 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H643-7003 | D/9 Drawing number reference only U.S. Government activity |
| 7067322 | D/9 Drawing number reference only Naval Sea Systems Command |
| H643-7003-81 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-486-4731 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-486-4731 has 1 manufacturer part number on file: 342-7067322-81 (Naval Sea Systems Command).
Key specifications for 342-7067322-81: First End Width Across Flats: 0.9950 INCHES NOMINAL IN; Second End Hole Diameter: 0.4060 INCHES NOMINAL IN; Step Quantity: 4; First End Diameter: 1.2500 INCHES NOMINAL IN. 19 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.