The Shaft,shouldered, cataloged under National Stock Number 3040-01-220-0039, 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20 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-220-0039 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Second End Hole Diameter | 0.2813 INCHES NOMINAL IN |
| Step Quantity | 3 |
| First End Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| First End Spline Major Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Second End Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.350 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,CLASS A FED SPEC SINGLE MATERIAL RESPONSE AND MIL-T-1368,TYPE 1,CONDITION 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Distance From Hole Center to End | 0.906 INCHES NOMINAL IN |
| First End Spline Length | 1.813 INCHES NOMINAL IN |
| Second End Hole Depth | 0.998 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 | 1.813 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 |
|---|---|
| 77656-31X6 PIECE 14 | 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 PIECE 14 | 5/2 Secondary reference U.S. Government activity |
| SSN637-505-2143924 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-220-0039 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-220-0039: Second End Hole Diameter: 0.2813 INCHES NOMINAL IN; Step Quantity: 3; First End Diameter: 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN; First End Spline Major Diameter: 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM 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.