The Shaft,shouldered, cataloged under National Stock Number 3040-01-496-5198, 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 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-496-5198 |
| Primary Part Number | 596-7409326-1 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Second End External Thread Length | 3.000 INCHES NOMINAL IN |
| Step Quantity | 13 |
| First End Diameter | 4.4960 INCHES MINIMUM AND 4.4980 INCHES MAXIMUM IN |
| Second End Diameter | 2.5000 INCHES NOMINAL IN |
| Largest Step Diameter | 6.995 INCHES MINIMUM AND 7.005 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Second End Keyway Width | 1.4980 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-286 FORM 2 CONDITION HOT FIN,ANNEALED&AGE HARDENED FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 2.1700 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.981 INCHES MINIMUM AND 0.987 INCHES MAXIMUM IN |
| Specification/standard Data | 81348QQ-N-286 FORM 2 CONDITION HOT FINISHED, ANNEALED AND AGE HARDENED GOVERNMENT SPECIFICATION |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.7500 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 3.000 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED FLAT KEYWAY AND EXTERNALLY THREADED |
| Material | NICKEL ALLOY |
| External Keyway Length | 5.525 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 |
|---|---|
| 596-7409326-1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 596-7409326 | D/9 Drawing number reference only Naval Sea Systems Command |
| B541-1113-1 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-496-5198 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-496-5198 has 1 manufacturer part number on file: 596-7409326-1 (Naval Sea Systems Command).
Key specifications for 596-7409326-1: Surface Finish: 32.0 MICROINCHES; Second End External Thread Length: 3.000 INCHES NOMINAL IN; Step Quantity: 13; First End Diameter: 4.4960 INCHES MINIMUM AND 4.4980 INCHES MAXIMUM IN. 18 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.