The Shaft,straight, cataloged under National Stock Number 3040-01-461-3539, 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 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-461-3539 |
| Primary Part Number | 556-6408374 FIND 8 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Diameter | 0.5400 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Material Document and Classification | MIL-P-24691/1 MIL SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | IDENTICAL |
| Material | STEEL COMP 316 |
| 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 |
|---|---|
| 556-6408374 FIND 8 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6408374 | D/9 Drawing number reference only Naval Sea Systems Command |
| 211083712 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 211083712 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 3040-01-461-3539 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-461-3539 has 1 manufacturer part number on file: 556-6408374 FIND 8 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-485-7976. Verify interchangeability with system specifications before substitution.
Key specifications for 556-6408374 FIND 8: First End Diameter: 0.5400 INCHES MAXIMUM IN; First End Style: PLAIN; Material Document and Classification: MIL-P-24691/1 MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 18.190 INCHES MAXIMUM IN. 5 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.