The Shaft,shouldered, cataloged under National Stock Number 3040-01-325-2357, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-325-2357 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 2 |
| First End Diameter | 3.9342 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN |
| Second End Diameter | 3.9342 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN |
| Second End Step Length | 5.000 INCHES NOMINAL IN |
| Largest Step Diameter | 5.000 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | ASTM A304 COMP 4140 ASSN STD SINGLE MATERIAL RESPONSE |
| Second End Tongue Width | 5.000 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Tongue Thickness | 2.000 INCHES NOMINAL IN |
| Second End Style | TONGUE ROUNDED ENDS |
| 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 |
|---|---|
| SW28305 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-325-2357 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-325-2357: Surface Finish: 32.0 MICROINCHES; Step Quantity: 2; First End Diameter: 3.9342 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN; Second End Diameter: 3.9342 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN. 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.