The Shaft,shouldered, cataloged under National Stock Number 3040-01-393-2764, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-393-2764 |
| Primary Part Number | 501-6398093 PC30 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End External Thread Length | 0.8438 INCHES NOMINAL IN |
| Step Quantity | 4 |
| First End Diameter | 0.7480 INCHES NOMINAL IN |
| First End Spline Major Diameter | 0.7480 INCHES MAXIMUM IN |
| Second End Diameter | 0.7480 INCHES NOMINAL IN |
| Largest Step Diameter | 1.2500 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| First End Spline Length | 1.0625 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.1250 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 12.3437 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND EXTERNALLY THREADED |
| Material | STEEL COMP 1018 |
| 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 |
|---|---|
| 2730-805 ITEM 30 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 501-6398093 PC30 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-393-2764 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-393-2764 has 2 manufacturer part numbers on file: 2730-805 ITEM 30 (Huntington Ingalls Inc Div Newport News Shipbuilding), 501-6398093 PC30 (Naval Sea Systems Command).
Key specifications for 501-6398093 PC30: Second End External Thread Length: 0.8438 INCHES NOMINAL IN; Step Quantity: 4; First End Diameter: 0.7480 INCHES NOMINAL IN; First End Spline Major Diameter: 0.7480 INCHES MAXIMUM IN. 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.