The Shaft,shouldered, cataloged under National Stock Number 3040-01-496-2231, 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 22 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-496-2231 |
| Primary Part Number | 581-6985420-9 |
| 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 | 1.120 INCHES NOMINAL IN |
| Step Quantity | 11 |
| First End Diameter | 1.4910 INCHES MINIMUM AND 1.4930 INCHES MAXIMUM IN |
| Second End Diameter | 1.4910 INCHES MINIMUM AND 1.4930 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.750 INCHES NOMINAL IN |
| First End External Thread Length | 1.170 INCHES MINIMUM AND 1.175 INCHES MAXIMUM IN |
| First End Style | CIRCULAR GROOVED AND EXTERNALLY THREADED |
| Second End Keyway Width | 0.3750 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-286,FORM:2,CONDITION:ANNEALED&AGEHARDENED,HOTFINIS FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.8000 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.185 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Specification/standard Data | 81348-QQ-N-286,FORM:2,CONDITION:ANNEALED AND AGE HARDENED,FINISH:HOT FINISH GOVERNMENT SPECIFICATION |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 1.170 INCHES MINIMUM AND 1.175 INCHES MAXIMUM IN |
| Second End Groove Width | 0.3800 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 1.120 INCHES NOMINAL IN |
| First End Groove Diameter | 0.8000 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED FLAT KEYWAY AND EXTERNALLY THREADED |
| Material | NICKEL ALLOY |
| First End Groove Width | 0.3800 INCHES NOMINAL IN |
| External Keyway Length | 2.625 INCHES MINIMUM AND 2.637 INCHES MAXIMUM 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 |
|---|---|
| 581-6985420-9 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H611-1404 | D/9 Drawing number reference only U.S. Government activity |
| H611-1404-9 | 5/2 Secondary reference U.S. Government activity |
| 6985420 | D/9 Drawing number reference only Naval Sea Systems Command |
| 218030137 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-496-2231 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-496-2231 has 1 manufacturer part number on file: 581-6985420-9 (Naval Sea Systems Command).
Key specifications for 581-6985420-9: Surface Finish: 32.0 MICROINCHES; Second End External Thread Length: 1.120 INCHES NOMINAL IN; Step Quantity: 11; First End Diameter: 1.4910 INCHES MINIMUM AND 1.4930 INCHES MAXIMUM IN. 22 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.