The Shaft,shouldered, cataloged under National Stock Number 3040-01-495-0520, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-495-0520 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| First End Tongue Thickness | 0.780 INCHES NOMINAL IN |
| Step Quantity | 5 |
| First End Diameter | 1.1800 INCHES MINIMUM AND 1.1900 INCHES MAXIMUM IN |
| First End Tongue Width | 1.1803 INCHES MINIMUM AND 1.1808 INCHES MAXIMUM IN |
| First End Step Length | 1.640 INCHES NOMINAL IN |
| Largest Step Diameter | 1.6240 INCHES MINIMUM AND 1.6245 INCHES MAXIMUM IN |
| First End Style | TONGUE ROUNDED ENDS |
| Material Document and Classification | MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | IDENTICAL |
| Material | STEEL COMP 431 |
| 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 |
|---|---|
| 6546D061 | D/9 Drawing number reference only U.S. Government activity |
| 6546D061-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-495-0520 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-495-0520: First End Tongue Thickness: 0.780 INCHES NOMINAL IN; Step Quantity: 5; First End Diameter: 1.1800 INCHES MINIMUM AND 1.1900 INCHES MAXIMUM IN; First End Tongue Width: 1.1803 INCHES MINIMUM AND 1.1808 INCHES MAXIMUM IN. 10 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.