The Shaft,shouldered, cataloged under National Stock Number 3040-01-221-5612, 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 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-221-5612 |
| Primary Part Number | 704-5765851 ITEM 34 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Second End External Thread Length | 0.991 INCHES NOMINAL IN |
| Step Quantity | 2 |
| First End Diameter | 1.3650 INCHES NOMINAL IN |
| Second End Diameter | 0.6250 INCHES NOMINAL IN |
| Largest Step Diameter | 1.365 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | ASTM A562 TYPE 630 ASSN STD SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 704-5765851 ITEM 34 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 704-5765851 | D/9 Drawing number reference only Naval Sea Systems Command |
| 88611510B1 ITEM 34 | 3/2 Design control — primary reference U.S. Government activity |
| 88611510B1 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-221-5612 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-221-5612 has 1 manufacturer part number on file: 704-5765851 ITEM 34 (Naval Sea Systems Command).
Key specifications for 704-5765851 ITEM 34: Surface Finish: 125.0 MICROINCHES; Second End External Thread Length: 0.991 INCHES NOMINAL IN; Step Quantity: 2; First End Diameter: 1.3650 INCHES NOMINAL IN. 11 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.