The Shaft,shouldered, cataloged under National Stock Number 3040-01-220-0036, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-220-0036 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Second End Hole Diameter | 0.2812 INCHES NOMINAL IN |
| Step Quantity | 3 |
| First End Diameter | 1.0000 INCHES NOMINAL IN |
| First End Spline Major Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Second End Diameter | 1.0000 INCHES NOMINAL IN |
| Largest Step Diameter | 1.315 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 0.8490 INCHES MINIMUM AND 0.8540 INCHES MAXIMUM IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Spline Major Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Distance From Hole Center to End | 0.9560 INCHES NOMINAL IN |
| First End Spline Length | 1.8125 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 10 |
| Second End Style | CROSS DRILLED HOLE AND SPLINED (STRAIGHT) |
| First End Spline Minor Diameter | 0.8490 INCHES MINIMUM AND 0.8540 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY |
| Second End Spline Length | 1.8125 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 |
|---|---|
| SSN637-505-2143924 PIECE 13 | 5/2 Secondary reference U.S. Government activity |
| 77656-31X6 PIECE 13 | 3/2 Design control — primary reference U.S. Government activity |
| 77656-31X6 | D/9 Drawing number reference only U.S. Government activity |
| SSN637-505-2143924 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-220-0036 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-220-0039. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-220-0036: Surface Finish: 63.0 MICROINCHES; Second End Hole Diameter: 0.2812 INCHES NOMINAL IN; Step Quantity: 3; First End Diameter: 1.0000 INCHES NOMINAL IN. 20 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.