The Shaft,straight, cataloged under National Stock Number 3040-01-434-5464, 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 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-434-5464 |
| Primary Part Number | 167-6404604 FIND 21 |
| 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 | 0.4970 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN |
| First End Slot Width | 0.1250 INCHES NOMINAL IN |
| First End Style | SLOTTED AND INTERNALLY THREADED |
| First End Internal Thread Length | 0.250 INCHES NOMINAL IN |
| End Similarity | IDENTICAL |
| First End Slot Depth | 0.3750 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 167-6404604-21 | Naval Sea Systems Command (USA) |
| 167-6404604 FIND 21 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6404604 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF502-255-20 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3040-01-434-5464 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-434-5464 has 2 manufacturer part numbers on file: 167-6404604-21 (Naval Sea Systems Command), 167-6404604 FIND 21 (Naval Sea Systems Command).
6 possible matches (shared part number, not a government interchangeability claim): 3040-01-434-5466, 3020-01-434-5467, 3020-01-434-5468. Verify interchangeability with system specifications before substitution.
Key specifications for 167-6404604 FIND 21: Surface Finish: 63.0 MICROINCHES; First End Diameter: 0.4970 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN; First End Slot Width: 0.1250 INCHES NOMINAL IN; First End Style: SLOTTED AND INTERNALLY THREADED. 8 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.