The Shaft,shouldered, cataloged under National Stock Number 3040-01-194-7963, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-194-7963 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Second End External Thread Length | 1.000 INCHES NOMINAL IN |
| Step Quantity | 4 |
| First End Diameter | 0.7475 INCHES NOMINAL IN |
| First End Spline Major Diameter | 0.7470 INCHES MINIMUM AND 0.7480 INCHES MAXIMUM IN |
| Second End Diameter | 0.8750 INCHES NOMINAL IN |
| Largest Step Diameter | 1.500 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Material Document and Classification | QQ-N-281 CLASS A,COLD DRAWN FED SPEC SINGLE MATERIAL RESPONSE |
| First End Spline Length | 1.500 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0625 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 1.000 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND EXTERNALLY THREADED |
| First End Spline Minor Diameter | 0.6340 INCHES MINIMUM AND 0.6380 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 77643-75X5 PIECE 21 | 3/2 Design control — primary reference U.S. Government activity |
| 77643-75X5 | D/9 Drawing number reference only U.S. Government activity |
| SNN637-501-2143882 PIECE 21 | 5/9 Secondary reference U.S. Government activity |
| SSN637-501-2143882 | D/9 Drawing number reference only U.S. Government activity |
| SSN637-501-2143882 PIECE 21 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-194-7963 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-195-6067, 3040-01-195-6069, 3040-01-196-3926. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-194-7963: Surface Finish: 63.0 MICROINCHES; Second End External Thread Length: 1.000 INCHES NOMINAL IN; Step Quantity: 4; First End Diameter: 0.7475 INCHES NOMINAL IN. 17 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 3040-01-194-7963 has DEMIL Code B. 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.