The Shaft,shouldered, cataloged under National Stock Number 3040-01-323-5939, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-323-5939 |
| 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 | 3.0380 INCHES MINIMUM AND 3.0390 INCHES MAXIMUM IN |
| Second End Diameter | 2.9750 INCHES MINIMUM AND 2.9760 INCHES MAXIMUM IN |
| Largest Step Diameter | 3.039 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| Material Document and Classification | ASTM A519,GRADE 1026 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A513,TYPE 5,GRADE 1026 ASSN STD SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 2.9400 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 1.000 INCHES NOMINAL IN |
| Second End Groove Width | 0.1200 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 1.000 INCHES NOMINAL IN |
| First End Groove Diameter | 2.9400 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED |
| Material | STEEL COMP 1026 |
| First End Groove Width | 0.1200 INCHES NOMINAL IN |
| 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 |
|---|---|
| SW25350 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-323-5939 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-323-5939: Surface Finish: 32.0 MICROINCHES; Step Quantity: 2; First End Diameter: 3.0380 INCHES MINIMUM AND 3.0390 INCHES MAXIMUM IN; Second End Diameter: 2.9750 INCHES MINIMUM AND 2.9760 INCHES MAXIMUM IN. 16 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.