The Shaft,shouldered, cataloged under National Stock Number 3040-01-358-9008, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-358-9008 |
| Primary Part Number | 803-6397396 PIECE 14 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Diameter | 0.4980 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.560 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 1.1200 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Keyway Width | 0.0928 INCHES MINIMUM AND 0.0943 INCHES MAXIMUM IN |
| Second End Keyway Depth | 0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | STEEL |
| External Keyway Length | 0.320 INCHES NOMINAL SECOND END 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 |
|---|---|
| 803-6397396 PIECE 14 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-6397396 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-358-9008 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-358-9008 has 1 manufacturer part number on file: 803-6397396 PIECE 14 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-359-8341, 3040-01-360-6285. Verify interchangeability with system specifications before substitution.
Key specifications for 803-6397396 PIECE 14: Step Quantity: 3; First End Diameter: 0.7500 INCHES NOMINAL IN; Second End Diameter: 0.4980 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN; Largest Step Diameter: 0.560 INCHES NOMINAL IN. 12 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.