The Shaft,shouldered, cataloged under National Stock Number 3040-01-341-8604, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-341-8604 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 7 |
| First End Diameter | 8.2500 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 5.0000 INCHES NOMINAL IN |
| Second End Diameter | 8.5000 INCHES NOMINAL IN |
| Largest Step Diameter | 8.938 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 15.4220 INCHES NOMINAL IN |
| First End Style | INDENTED FLAT KEYWAY |
| Second End Keyway Width | 2.0000 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-24093,TY II OR III MIL SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.7500 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.7500 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | STEEL |
| External Keyway Length | 12.0000 INCHES NOMINAL SECOND END IN |
| External Keyway Length | 7.0000 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 2.0000 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 |
| Reference | Meaning |
|---|---|
| 122-4402674 PIECE 1 | 3/2 Design control — primary reference U.S. Government activity |
| 4402674 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-341-8604 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-341-8604: Surface Finish: 63.0 MICROINCHES; Step Quantity: 7; First End Diameter: 8.2500 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 5.0000 INCHES NOMINAL 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.