The Shaft,shouldered, cataloged under National Stock Number 3040-01-438-6230, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-438-6230 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| First End Bearing Seat Diameter | 0.4400 INCHES NOMINAL IN |
| First End Bearing Seat Length | 0.535 INCHES NOMINAL IN |
| Step Quantity | 5 |
| First End Diameter | 0.4400 INCHES NOMINAL IN |
| Second End Diameter | 0.9330 INCHES NOMINAL IN |
| Largest Step Diameter | 1.344 INCHES NOMINAL IN |
| First End Style | BEARING SEAT |
| Second End Groove Diameter | 1.0000 INCHES NOMINAL IN |
| First End Distance From Bearing Seat to End | 0.460 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.1390 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.037 INCHES NOMINAL IN |
| Second End Style | TWO CIRCULAR GROOVES |
| Material | STEEL |
| Second End Distance Between First and Second Groove Centers | 0.177 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 |
|---|---|
| 723345 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-438-6230 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-438-6230: First End Bearing Seat Diameter: 0.4400 INCHES NOMINAL IN; First End Bearing Seat Length: 0.535 INCHES NOMINAL IN; Step Quantity: 5; First End Diameter: 0.4400 INCHES NOMINAL IN. 15 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.