The Shaft,shouldered, cataloged under National Stock Number 3040-01-532-6540, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-532-6540 |
| Primary Part Number | 68A450978-2001 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Step Quantity | 9 |
| Second End Diameter | 0.2845 INCHES NOMINAL IN |
| Largest Step Diameter | 0.562 INCHES NOMINAL IN |
| Criticality Code Justification | AMFZ AND FEAT |
| Material Document and Classification | AMS5643, COND A. MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Style | PLAIN |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 68A450978-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 68A450978 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 3040-01-532-6540 is a Shaft,shouldered, manufactured by The Boeing Company Div Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-532-6540 has 1 manufacturer part number on file: 68A450978-2001 (The Boeing Company Div Defense).
Key specifications for 68A450978-2001: Step Quantity: 9; Second End Diameter: 0.2845 INCHES NOMINAL IN; Largest Step Diameter: 0.562 INCHES NOMINAL IN; Criticality Code Justification: AMFZ AND FEAT. 7 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.
NSN 3040-01-532-6540 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.