The Shaft,shouldered, cataloged under National Stock Number 3040-00-183-5298, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-00-183-5298 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 250.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 1.6250 INCHES NOMINAL IN |
| Second End Diameter | 0.7450 INCHES MINIMUM AND 0.7470 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.625 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 0.5519 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| Second End Spline Major Diameter | 0.7460 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.125 INCHES NOMINAL IN |
| Second End Spline Quantity | 11 |
| Second End Pressure Angle | 30.0 DEGREES NOMINAL |
| First End Groove Diameter | 0.5350 INCHES NOMINAL IN |
| Second End Style | SPLINED (INVOLUTE) |
| Material | STEEL COMP 4130 |
| Second End Pitch Diameter | 0.6875 INCHES NOMINAL IN |
| First End Groove Width | 0.5625 INCHES NOMINAL IN |
| Second End Spline Length | 3.500 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 |
|---|---|
| 4445139 | D/9 Drawing number reference only U.S. Government activity |
| 4445139-503 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-183-5298 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-183-5298: Surface Finish: 250.0 MICROINCHES; Step Quantity: 3; First End Diameter: 1.6250 INCHES NOMINAL IN; Second End Diameter: 0.7450 INCHES MINIMUM AND 0.7470 INCHES MAXIMUM IN. 19 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.