The Shaft,straight, cataloged under National Stock Number 3040-01-409-0079, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-409-0079 |
| Primary Part Number | 211064645 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| First End Diameter | 0.8800 INCHES NOMINAL IN |
| First End Flat Depth | 0.7700 INCHES NOMINAL IN |
| Second End Diameter | 0.6240 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| First End Style | FLATTED |
| End Similarity | NOT IDENTICAL |
| Second End Style | INTERNAL THREADED |
| First End Flat Length | 0.880 INCHES NOMINAL IN |
| Material | STEEL COMP 316 |
| Second End Internal Thread Length | 0.870 INCHES MINIMUM IN |
| 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 |
|---|---|
| 211064645 PRIMARY | Naval Sea Systems Command (USA) |
| 585-6406620-55 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 585-6406620 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-409-0079 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-409-0079 has 2 manufacturer part numbers on file: 211064645 (Naval Sea Systems Command), 585-6406620-55 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-409-0083. Verify interchangeability with system specifications before substitution.
Key specifications for 211064645: Surface Finish: 63.0 MICROINCHES; First End Diameter: 0.8800 INCHES NOMINAL IN; First End Flat Depth: 0.7700 INCHES NOMINAL IN; Second End Diameter: 0.6240 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN. 10 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.