The Shaft Assembly,shouldered, cataloged under National Stock Number 3040-01-503-8711, 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 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-503-8711 |
| Primary Part Number | 596-7409221-A2 |
| Item Name | Shaft Assembly,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Document Type | MILITARY DRAWING |
| Document Identification | 7409221 |
| Document Source | 53711 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 596-7409221-A2 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7409221 | D/9 Drawing number reference only Naval Sea Systems Command |
| B4342310-A2 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-503-8711 is a Shaft Assembly,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-503-8711 has 1 manufacturer part number on file: 596-7409221-A2 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-514-7900, 3040-01-514-7928. Verify interchangeability with system specifications before substitution.
Key specifications for 596-7409221-A2: Document Type: MILITARY DRAWING; Document Identification: 7409221; Document Source: 53711; Special Features: NEXT HIGHER ASSEMBLY: EXTERNAL CL TRAY HANDLING PACKAGE LATCH MECHANISM ASSEMBLY.. 3 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 3040-01-503-8711 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.