The Shaft,straight, cataloged under National Stock Number 3040-01-400-3155, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-400-3155 |
| Primary Part Number | 167-6404330 FIND 17 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Diameter | 1.7320 INCHES NOMINAL IN |
| Second End Step Length | 1.849 INCHES NOMINAL IN |
| First End External Thread Length | 1.849 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| End Similarity | NOT IDENTICAL |
| Second End Style | HEXAGONAL |
| Material | STEEL CORROSION RESISTING |
| Second End Width Across Flats | 1.469 INCHES MINIMUM AND 1.500 INCHES MAXIMUM 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 |
|---|---|
| 167-6404330 FIND 17 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 167-6404330 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-400-3155 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-400-3155 has 1 manufacturer part number on file: 167-6404330 FIND 17 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-459-5223. Verify interchangeability with system specifications before substitution.
Key specifications for 167-6404330 FIND 17: First End Diameter: 0.7500 INCHES NOMINAL IN; Second End Diameter: 1.7320 INCHES NOMINAL IN; Second End Step Length: 1.849 INCHES NOMINAL IN; First End External Thread Length: 1.849 INCHES NOMINAL IN. 9 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.