The Shaft,shouldered, cataloged under National Stock Number 3040-01-125-9994, 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15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-125-9994 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Second End Hole Diameter | 0.1560 INCHES NOMINAL IN |
| Step Quantity | 9 |
| First End Diameter | 0.1600 INCHES NOMINAL IN |
| Second End Diameter | 1.2500 INCHES NOMINAL IN |
| Largest Step Diameter | 1.2500 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.8100 INCHES NOMINAL IN |
| Second End Distance From Hole Center to End | 0.8100 INCHES NOMINAL IN |
| Second End Hole Depth | 0.8100 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 1.2500 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.2500 INCHES NOMINAL IN |
| Second End Style | CROSS DRILLED AND CIRCULAR GROOVED |
| Material | STEEL COMP 304 |
| 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 |
|---|---|
| 520-4674694 ITEM 13 | 3/2 Design control — primary reference U.S. Government activity |
| 520-4674694 | D/9 Drawing number reference only U.S. Government activity |
| 4674694-0013 | 5/1 Secondary reference U.S. Government activity |
| 34-21-7820 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-01-125-9994 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): 3040-01-153-1462, 3040-01-192-3558. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-125-9994: Second End Hole Diameter: 0.1560 INCHES NOMINAL IN; Step Quantity: 9; First End Diameter: 0.1600 INCHES NOMINAL IN; Second End Diameter: 1.2500 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.