The Shaft,shouldered, cataloged under National Stock Number 3040-01-496-5682, 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 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-496-5682 |
| Primary Part Number | 596-7409745-3 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 16.0 MICRONS |
| First End Pitch Diameter | 2.2500 INCHES NOMINAL IN |
| Step Quantity | 9 |
| First End Diameter | 2.2920 INCHES MINIMUM AND 2.3120 INCHES MAXIMUM IN |
| First End Spline Major Diameter | 2.2920 INCHES MINIMUM AND 2.3120 INCHES MAXIMUM IN |
| Second End Diameter | 2.0930 INCHES NOMINAL IN |
| Largest Step Diameter | 2.500 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 1.9210 INCHES NOMINAL IN |
| First End Style | SPLINED (INVOLUTE) |
| Second End Spline Major Diameter | 2.1050 INCHES MINIMUM AND 2.1250 INCHES MAXIMUM IN |
| Material Document and Classification | DOD-F-24669/1 GRADE 4340 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 1.8750 INCHES NOMINAL IN |
| First End Pressure Angle | 30.0 DEGREES NOMINAL |
| First End Spline Length | 1.375 INCHES NOMINAL IN |
| Specification/standard Data | 81349-DOD-F-24669/1 GRADE 4340 GOVERNMENT SPECIFICATION |
| First End Spline Quantity | 36 |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 33 |
| Second End Groove Width | 0.6560 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 1.714 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND SPLINED (STRAIGHT) |
| First End Spline Minor Diameter | 2.1078 INCHES NOMINAL IN |
| Material | STEEL COMP 4340 |
| Second End Spline Length | 1.714 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 |
|---|---|
| 596-7409745-3 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 596-7409745 | D/9 Drawing number reference only Naval Sea Systems Command |
| B831-6300-3 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-496-5682 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-496-5682 has 1 manufacturer part number on file: 596-7409745-3 (Naval Sea Systems Command).
Key specifications for 596-7409745-3: Surface Finish: 16.0 MICRONS; First End Pitch Diameter: 2.2500 INCHES NOMINAL IN; Step Quantity: 9; First End Diameter: 2.2920 INCHES MINIMUM AND 2.3120 INCHES MAXIMUM IN. 24 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.