The Shaft,shouldered, cataloged under National Stock Number 3040-01-338-4436, 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 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-338-4436 |
| Primary Part Number | 123-5583497 ITEM 50 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Width Across Flats | 0.747 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN |
| Second End Hole Diameter | 0.1250 INCHES NOMINAL IN |
| Second End External Thread Length | 0.670 INCHES NOMINAL IN |
| Step Quantity | 12 |
| First End Diameter | 0.9960 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| First End Step Length | 0.870 INCHES NOMINAL IN |
| Second End Diameter | 0.6250 INCHES NOMINAL IN |
| Largest Step Diameter | 0.162 INCHES NOMINAL IN |
| First End Style | SQUARE (ROUND CORNERS) |
| Second End Distance From Hole Center to End | 0.335 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | CROSS DRILLED AND EXTERNALLY THREADED |
| Material | STEEL COMP 304 |
| 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 |
|---|---|
| 123-5583497 ITEM 50 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-338-4436 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-338-4436 has 1 manufacturer part number on file: 123-5583497 ITEM 50 (Naval Sea Systems Command).
Key specifications for 123-5583497 ITEM 50: First End Width Across Flats: 0.747 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN; Second End Hole Diameter: 0.1250 INCHES NOMINAL IN; Second End External Thread Length: 0.670 INCHES NOMINAL IN; Step Quantity: 12. 13 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.