The Shaft,shouldered, cataloged under National Stock Number 3040-01-047-0310, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-047-0310 |
| Primary Part Number | 2580193 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End Hole Diameter | 0.3750 INCHES NOMINAL IN |
| Step Quantity | 2 |
| First End Diameter | 1.1800 INCHES NOMINAL IN |
| Second End Diameter | 1.2600 INCHES NOMINAL IN |
| Largest Step Diameter | 1.260 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 2.682 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Keyway Width | 0.2490 INCHES NOMINAL IN |
| Material Document and Classification | MIL-C-24111 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Hole Depth | 1.260 INCHES NOMINAL IN |
| Second End Keyway Depth | 1.139 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY AND CROSS DRILLED HOLE |
| Material | STEEL |
| External Keyway Length | 2.505 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 |
| Part Number | Manufacturer |
|---|---|
| 2580193 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2580193 | 3/9 Design control — primary reference Ball a C Co |
| 2580193 | 5/2 Secondary reference U.S. Government activity |
| 2580193 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 3040-01-047-0310 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-047-0310 has 1 manufacturer part number on file: 2580193 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-278-1905. Verify interchangeability with system specifications before substitution.
Key specifications for 2580193: Second End Hole Diameter: 0.3750 INCHES NOMINAL IN; Step Quantity: 2; First End Diameter: 1.1800 INCHES NOMINAL IN; Second End Diameter: 1.2600 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.