The Shaft,shouldered, cataloged under National Stock Number 3040-01-500-5374, 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 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-01-500-5374 |
| Primary Part Number | 596-7409714-2 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 9 |
| First End Diameter | 0.3700 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN |
| First End Flat Depth | 0.0600 INCHES MINIMUM AND 0.0640 INCHES MAXIMUM IN |
| Second End Diameter | 1.4150 INCHES MINIMUM AND 1.4370 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.500 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 1.2770 INCHES MINIMUM IN |
| First End Style | FLATTED |
| Second End Spline Major Diameter | 1.4150 INCHES MINIMUM AND 1.4370 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM-A564 TYPE-630 CONDITION-H1150,HF NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.690 INCHES MINIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 22 |
| Second End Pressure Angle | 20.0 DEGREES NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| Material | STEEL CORROSION RESISTING |
| Second End Pitch Diameter | 1.3750 INCHES NOMINAL IN |
| Second End Spline Length | 2.100 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 |
|---|---|
| 596-7409714-2 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B831-5110-2 | 5/2 Secondary reference U.S. Government activity |
| 596-7409714 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-500-5374 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-500-5374 has 1 manufacturer part number on file: 596-7409714-2 (Naval Sea Systems Command).
Key specifications for 596-7409714-2: Surface Finish: 32.0 MICROINCHES; Step Quantity: 9; First End Diameter: 0.3700 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN; First End Flat Depth: 0.0600 INCHES MINIMUM AND 0.0640 INCHES MAXIMUM IN. 18 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.