The Shaft,shouldered, cataloged under National Stock Number 3040-01-221-1599, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-01-221-1599 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 0.6250 INCHES NOMINAL IN |
| Second End Diameter | 0.7480 INCHES NOMINAL IN |
| Largest Step Diameter | 0.872 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 0.5625 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Keyway Width | 0.2812 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.0937 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | NICKEL ALLOY |
| External Keyway Length | 0.875 INCHES NOMINAL SECOND END 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 |
|---|---|
| SSN593-520-1862100 | D/9 Drawing number reference only U.S. Government activity |
| SSN593-520-1862100 PIECE 7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-221-1599 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-221-1599: Surface Finish: 63.0 MICROINCHES; Step Quantity: 3; First End Diameter: 0.6250 INCHES NOMINAL IN; Second End Diameter: 0.7480 INCHES NOMINAL IN. 13 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.