The Shaft,shouldered, cataloged under National Stock Number 3040-01-497-3018, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-497-3018 |
| Primary Part Number | 2502783 |
| 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 | 0.8420 INCHES MINIMUM AND 0.8430 INCHES MAXIMUM IN |
| First End Distance From Keyway Center to End | 1.031 INCHES NOMINAL IN |
| Second End Diameter | 0.8090 INCHES MINIMUM AND 0.8110 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Second End Spline Minor Diameter | 0.5011 INCHES MINIMUM AND 0.5061 INCHES MAXIMUM IN |
| First End Style | WOODRUFF KEYWAY |
| Second End Spline Major Diameter | 0.6750 INCHES MINIMUM AND 0.6860 INCHES MAXIMUM IN |
| Material Document and Classification | AISI 4140H NATIONAL SPEC ALL MATERIAL RESPONSES |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 9 |
| Second End Pressure Angle | 30.0 DEGREES NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| Material | STEEL COMP 4140 |
| Second End Pitch Diameter | 0.5625 INCHES NOMINAL IN |
| External Keyway Length | 0.750 INCHES NOMINAL FIRST END IN |
| Second End Spline Length | 1.250 INCHES NOMINAL IN |
| First End Keyway Width | 0.1860 INCHES MINIMUM AND 0.1880 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 |
|---|---|
| 2502783 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2502783 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3040-01-497-3018 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-497-3018 has 1 manufacturer part number on file: 2502783 (Naval Sea Systems Command).
Key specifications for 2502783: Step Quantity: 5; First End Diameter: 0.8420 INCHES MINIMUM AND 0.8430 INCHES MAXIMUM IN; First End Distance From Keyway Center to End: 1.031 INCHES NOMINAL IN; Second End Diameter: 0.8090 INCHES MINIMUM AND 0.8110 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.