The Shaft,straight, cataloged under National Stock Number 3040-00-155-5814, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-155-5814 |
| Primary Part Number | 325657PC3 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| First End Width Across Flats | 0.2505 INCHES NOMINAL IN |
| First End Diameter | 0.2505 INCHES NOMINAL IN |
| First End Step Length | 1.765 INCHES NOMINAL IN |
| First End Style | SQUARE (ROUND CORNERS) |
| End Similarity | IDENTICAL |
| Material | ALUMINUM 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 |
|---|---|
| 203645 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 325657PC3 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 325657PC3 | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Corporation Div Rms - Mitchel Field |
| 325657 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 3040-00-155-5814 is a Shaft,straight, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-155-5814 has 2 manufacturer part numbers on file: 203645 (Lockheed Martin Corporation Div Rms - Mitchel Field), 325657PC3 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 1650-00-566-4338. Verify interchangeability with system specifications before substitution.
Key specifications for 325657PC3: First End Width Across Flats: 0.2505 INCHES NOMINAL IN; First End Diameter: 0.2505 INCHES NOMINAL IN; First End Step Length: 1.765 INCHES NOMINAL IN; First End Style: SQUARE (ROUND CORNERS). 6 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.