The Shaft,shouldered, cataloged under National Stock Number 3040-00-441-2574, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Alfa Laval Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-441-2574 |
| Primary Part Number | AC5807-1 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Alfa Laval Inc |
| Status | ACTIVE |
| Surface Finish | 16.0 MICROINCHES |
| Second End External Thread Length | 0.645 INCHES NOMINAL IN |
| Step Quantity | 6 |
| First End Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Diameter | 0.3750 INCHES NOMINAL IN |
| Largest Step Diameter | 0.939 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-S-633,AISI C1045 FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| Material | STEEL |
| 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 |
|---|---|
| AC5807-1 PRIMARY | Alfa Laval Inc (USA) |
| MEC-4412574 | Maven Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 3N278PC44 | 5/9 Secondary reference Alfa Laval Inc. |
| 3N287PC44 | 5/9 Secondary reference Alfa Laval Inc. |
| 3N287 | D/9 Drawing number reference only Alfa Laval Inc. |
| 3N-387 PIECE 44 | 5/9 Secondary reference Alfa Laval Inc. |
| AC5807-1 | 3/9 Design control — primary reference Alfa Laval Inc. |
| 3N-371 PIECE 44 | 5/9 Secondary reference Alfa Laval Inc. |
NSN 3040-00-441-2574 is a Shaft,shouldered, manufactured by Alfa Laval Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-441-2574 has 2 manufacturer part numbers on file: AC5807-1 (Alfa Laval Inc), MEC-4412574 (Maven Engineering Corporation).
1 possible match (shared part number, not a government interchangeability claim): 6105-01-190-5431. Verify interchangeability with system specifications before substitution.
Key specifications for AC5807-1: Surface Finish: 16.0 MICROINCHES; Second End External Thread Length: 0.645 INCHES NOMINAL IN; Step Quantity: 6; First End Diameter: 0.7500 INCHES NOMINAL IN. 11 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.