The Shaft,shouldered, cataloged under National Stock Number 3040-01-123-3014, 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16 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-123-3014 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| 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 | 1.6250 INCHES NOMINAL IN |
| Second End Step Length | 1.120 INCHES NOMINAL IN |
| Largest Step Diameter | 1.625 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 | 1.750 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Style | SQUARE (ROUND CORNERS) |
| First End Spline Minor Diameter | 0.8440 INCHES MINIMUM AND 0.8540 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY |
| Second End Width Across Flats | 1.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 520-4674729 | D/9 Drawing number reference only U.S. Government activity |
| 520-4674729 ITEM 3 | 5/2 Secondary reference U.S. Government activity |
| 87615-2011 | D/9 Drawing number reference only U.S. Government activity |
| 87615-2011 ITEM 3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-123-3014 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 2520-01-123-3238, 3040-01-123-3845, 2520-01-123-4102. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-123-3014: Surface Finish: 32.0 MICROINCHES; 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. 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.
NSN 3040-01-123-3014 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.