The Shaft,shouldered, cataloged under National Stock Number 3040-01-105-7530, 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 14 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 | 3040-01-105-7530 |
| Primary Part Number | 5428321 |
| 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 Hole Diameter | 0.0940 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN |
| Second End External Thread Length | 0.500 INCHES NOMINAL IN |
| Step Quantity | 6 |
| First End Diameter | 0.3540 INCHES NOMINAL IN |
| Second End Diameter | 0.3750 INCHES NOMINAL IN |
| Largest Step Diameter | 0.750 INCHES MINIMUM IN |
| First End Style | PLAIN |
| Material Document and Classification | BST-5643 FED STD SINGLE MATERIAL RESPONSE OR TYPE 630 ASSN STD 2ND MATERIAL RESPONSE |
| Second End Distance From Hole Center to End | 0.130 INCHES NOMINAL IN |
| Second End Hole Depth | 0.375 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | CROSS DRILLED AND EXTERNALLY THREADED |
| Material | STEEL COMP 630 |
| 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 |
|---|---|
| 5428321 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-105-7530 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-105-7530 has 1 manufacturer part number on file: 5428321 (Naval Sea Systems Command).
Key specifications for 5428321: Surface Finish: 125.0 MICROINCHES; Second End Hole Diameter: 0.0940 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN; Second End External Thread Length: 0.500 INCHES NOMINAL IN; Step Quantity: 6. 14 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.