The Shaft,shouldered, cataloged under National Stock Number 3040-00-758-0342, 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10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-758-0342 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 16.0 MICROINCHES |
| Step Quantity | 5 |
| First End Diameter | 1.6250 INCHES NOMINAL IN |
| Second End Diameter | 1.8750 INCHES NOMINAL IN |
| Largest Step Diameter | 2.187 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-S-624,CONDITION OPTIONAL,GRAIN SIZE 5 FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | PLAIN |
| Material | STEEL COMP 4140 |
| 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 |
|---|---|
| B8004-09-005FN35 | 5/2 Secondary reference U.S. Government activity |
| XV09-005-154 | 3/9 Design control — primary reference Project Manager Amphibious Lighters St Louis Mo |
| C8004-09-005FN35 | 5/2 Secondary reference U.S. Government activity |
| B8004-09-005-35 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-00-758-0342 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-758-0342: Surface Finish: 16.0 MICROINCHES; Step Quantity: 5; First End Diameter: 1.6250 INCHES NOMINAL IN; Second End Diameter: 1.8750 INCHES NOMINAL 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.