The Shaft,shouldered, cataloged under National Stock Number 3040-01-124-3838, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-124-3838 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Step Quantity | 2 |
| First End Diameter | 0.6230 INCHES NOMINAL IN |
| Second End Diameter | 1.1200 INCHES NOMINAL IN |
| Largest Step Diameter | 1.120 INCHES NOMINAL IN |
| First End Hole Depth | 0.500 INCHES NOMINAL IN |
| Second End Angle Between Keyways | 180.0 DEGREES NOMINAL |
| First End Style | UNTHREADED CROSS DRILLED |
| Second End Keyway Minor Width | 0.2500 INCHES NOMINAL IN |
| Second End Keyway Major Width | 0.2500 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.060 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.1870 INCHES NOMINAL IN |
| Second End Style | DUAL KEYWAY |
| Material | STEEL COMP 1010 |
| First End Distance From Hole Center to End | 0.500 INCHES NOMINAL IN |
| External Keyway Length | 1.190 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 |
|---|---|
| B5-45-3274 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-124-3838 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-124-3838: Step Quantity: 2; First End Diameter: 0.6230 INCHES NOMINAL IN; Second End Diameter: 1.1200 INCHES NOMINAL IN; Largest Step Diameter: 1.120 INCHES NOMINAL IN. 16 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.