The Shaft,shouldered, cataloged under National Stock Number 3040-00-686-1835, 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13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-00-686-1835 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| FSC Application Data | MISCELLANEOUS ACFT ACCESSORIES AND COMPONENTS |
| Step Quantity | 3 |
| First End Spline Major Diameter | 0.5833 INCHES NOMINAL IN |
| Largest Step Diameter | 1.064 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 0.5210 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Spline Major Diameter | 0.5830 INCHES NOMINAL IN |
| First End Spline Length | 2.250 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | SPLINED (STRAIGHT) |
| First End Spline Minor Diameter | 0.5210 INCHES NOMINAL IN |
| Material | STEEL |
| Second End Spline Length | 1.300 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 |
|---|---|
| MAG25779-1 | 3/9 Design control — primary reference Speco Corp |
| MAG25223 | 5/9 Secondary reference Speco Corp |
NSN 3040-00-686-1835 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-686-1835: FSC Application Data: MISCELLANEOUS ACFT ACCESSORIES AND COMPONENTS; Step Quantity: 3; First End Spline Major Diameter: 0.5833 INCHES NOMINAL IN; Largest Step Diameter: 1.064 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.