The Shaft,shouldered, cataloged under National Stock Number 3040-01-488-5565, 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 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-488-5565 |
| Primary Part Number | 581-6726890-19 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End Hole Diameter | 1.1210 INCHES MINIMUM AND 1.1370 INCHES MAXIMUM IN |
| Step Quantity | 5 |
| First End Diameter | 1.5000 INCHES NOMINAL IN |
| Second End Diameter | 3.2450 INCHES MINIMUM AND 3.2470 INCHES MAXIMUM IN |
| Largest Step Diameter | 3.7500 INCHES MINIMUM AND 3.7540 INCHES MAXIMUM IN |
| Second End Spline Minor Diameter | 2.8700 INCHES MINIMUM AND 2.8750 INCHES MAXIMUM IN |
| First End External Thread Length | 2.2200 INCHES MINIMUM AND 2.2800 INCHES MAXIMUM IN |
| First End Style | EXTERNAL THREADED |
| Second End Spline Major Diameter | 3.2450 INCHES MINIMUM AND 3.2470 INCHES MAXIMUM IN |
| Second End Distance From Hole Center to End | 2.0000 INCHES NOMINAL IN |
| Second End Hole Depth | 3.2470 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 9 |
| Second End Style | CROSS DRILLED HOLE AND SPLINED (STRAIGHT) |
| Material | NICKEL ALLOY K-500 |
| Second End Spline Length | 12.8100 INCHES NOMINAL 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 |
|---|---|
| 581-6726890-19 PRIMARY | Naval Sea Systems Command (USA) |
| 14922132 | Naval Sea Systems Command (USA) |
| DF2011-282-19 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 6726890 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF2011-282 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3040-01-488-5565 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-488-5565 has 3 manufacturer part numbers on file: 581-6726890-19 (Naval Sea Systems Command), 14922132 (Naval Sea Systems Command), DF2011-282-19 (Huntington Ingalls Inc Div Newport News Shipbuilding).
1 possible match (shared part number, not a government interchangeability claim): 3940-01-489-1464. Verify interchangeability with system specifications before substitution.
Key specifications for 581-6726890-19: Second End Hole Diameter: 1.1210 INCHES MINIMUM AND 1.1370 INCHES MAXIMUM IN; Step Quantity: 5; First End Diameter: 1.5000 INCHES NOMINAL IN; Second End Diameter: 3.2450 INCHES MINIMUM AND 3.2470 INCHES MAXIMUM IN. 16 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.