The Shaft,shouldered, cataloged under National Stock Number 3040-01-220-2086, 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16 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-220-2086 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 8 |
| First End Diameter | 0.9975 INCHES NOMINAL IN |
| First End Spline Major Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Second End Diameter | 0.9970 INCHES MINIMUM AND 0.9990 INCHES MAXIMUM IN |
| Second End Step Length | 1.000 INCHES NOMINAL IN |
| Largest Step Diameter | 1.375 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Material Document and Classification | QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE |
| First End Spline Length | 1.875 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Style | SQUARE (ROUND CORNERS) |
| First End Spline Minor Diameter | 0.8490 INCHES MINIMUM AND 0.8540 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY |
| Second End Width Across Flats | 0.750 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 |
|---|---|
| SSN637-505-2143923 PIECE 22 | 5/2 Secondary reference U.S. Government activity |
| 77656-31X5 PIECE 22 | 3/2 Design control — primary reference U.S. Government activity |
| 77656-31X5 | D/9 Drawing number reference only U.S. Government activity |
| SSN637-505-2143923 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-220-2086 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-220-2086: Surface Finish: 63.0 MICROINCHES; Step Quantity: 8; First End Diameter: 0.9975 INCHES NOMINAL IN; First End Spline Major Diameter: 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM 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.