The Shaft,shouldered, cataloged under National Stock Number 3040-00-791-5256, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Cummins Inc.. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-791-5256 |
| Primary Part Number | 105307 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Second End External Thread Length | 0.750 INCHES NOMINAL IN |
| Step Quantity | 7 |
| First End Diameter | 2.4350 INCHES NOMINAL IN |
| First End Flat Depth | 0.8425 INCHES NOMINAL IN |
| Second End Diameter | 0.5620 INCHES NOMINAL IN |
| Largest Step Diameter | 2.435 INCHES NOMINAL IN |
| First End Style | FLATTED |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| First End Flat Length | 0.245 INCHES NOMINAL IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 105307 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 105307 | 5/9 Secondary reference La Gary Co |
NSN 3040-00-791-5256 is a Shaft,shouldered, manufactured by Cummins Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-791-5256 has 1 manufacturer part number on file: 105307 (Cummins Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4520-00-980-7909. Verify interchangeability with system specifications before substitution.
Key specifications for 105307: Surface Finish: 125.0 MICROINCHES; Second End External Thread Length: 0.750 INCHES NOMINAL IN; Step Quantity: 7; First End Diameter: 2.4350 INCHES NOMINAL IN. 12 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.