The Shaft,shouldered, cataloged under National Stock Number 3040-01-278-2722, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-278-2722 |
| Primary Part Number | 525156-02 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Alfa Laval Inc |
| Status | ACTIVE |
| Surface Finish | 16.0 MICROINCHES |
| Step Quantity | 8 |
| First End Diameter | 25.0 MILLIMETERS NOMINAL MM |
| Second End Diameter | 18.0 MILLIMETERS NOMINAL MM |
| Largest Step Diameter | 39.0 MILLIMETERS NOMINAL MM |
| First End External Thread Length | 10.0 MILLIMETERS NOMINAL MM |
| Second End Distance From Keyway Center to End | 8.0 MILLIMETERS NOMINAL MM |
| First End Style | EXTERNAL THREADED |
| Second End Keyway Width | 4.0 MILLIMETERS NOMINAL MM |
| End Similarity | NOT IDENTICAL |
| Second End Style | WOODRUFF KEYWAY |
| Material | ALUMINUM ALLOY |
| External Keyway Length | 16.0 MILLIMETERS NOMINAL SECOND END MM |
| 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 |
|---|---|
| 525156-02 PRIMARY | Alfa Laval Inc (USA) |
| Reference | Meaning |
|---|---|
| 525156 | D/9 Drawing number reference only Alfa Laval Inc |
NSN 3040-01-278-2722 is a Shaft,shouldered, manufactured by Alfa Laval Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-278-2722 has 1 manufacturer part number on file: 525156-02 (Alfa Laval Inc).
Key specifications for 525156-02: Surface Finish: 16.0 MICROINCHES; Step Quantity: 8; First End Diameter: 25.0 MILLIMETERS NOMINAL MM; Second End Diameter: 18.0 MILLIMETERS NOMINAL MM. 13 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.