The Shaft,shouldered, cataloged under National Stock Number 3040-01-240-1046, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-240-1046 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 5 |
| First End Diameter | 0.8750 INCHES NOMINAL IN |
| Second End Diameter | 0.9965 INCHES NOMINAL IN |
| Largest Step Diameter | 1.6235 INCHES NOMINAL IN |
| First End External Thread Length | 0.9688 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 0.875 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| Second End Keyway Width | 0.2500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281,CLASS A COLD DRAWN FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Keyway Depth | 0.125 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | NICKEL ALLOY |
| External Keyway Length | 1.500 INCHES NOMINAL SECOND END 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 |
|---|---|
| 609-1943567 PIECE 11 | 3/2 Design control — primary reference U.S. Government activity |
| 609-1943567 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-240-1046 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-240-1047, 3020-01-242-5413. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-240-1046: Surface Finish: 63.0 MICROINCHES; Step Quantity: 5; First End Diameter: 0.8750 INCHES NOMINAL IN; Second End Diameter: 0.9965 INCHES NOMINAL IN. 15 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.