The Shaft,shouldered, cataloged under National Stock Number 3040-01-538-3511, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-538-3511 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| First End Width Across Flats | 1.250 INCHES NOMINAL IN |
| Second End External Thread Length | 2.875 INCHES NOMINAL IN |
| Step Quantity | 3 |
| First End Diameter | 1.5000 INCHES NOMINAL IN |
| First End Step Length | 2.260 INCHES NOMINAL IN |
| Second End Diameter | 2.1880 INCHES NOMINAL IN |
| Largest Step Diameter | 2.563 INCHES NOMINAL IN |
| First End Style | HEXAGONAL |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| Material | MANGANESE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 89010 FIND NO-66 P/N 89027-6 | 5/2 Secondary reference U.S. Government activity |
| 89010 FIND NO-66 P/N 89027-6 | 5/9 Secondary reference Tri-Tec Manufacturing, Llc |
| 89027-6 | 3/9 Design control — primary reference Tri-Tec Manufacturing, Llc |
| 89027-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-538-3511 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-538-3511: First End Width Across Flats: 1.250 INCHES NOMINAL IN; Second End External Thread Length: 2.875 INCHES NOMINAL IN; Step Quantity: 3; First End Diameter: 1.5000 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.