The Shaft,shouldered, cataloged under National Stock Number 3040-00-798-4201, 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13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-798-4201 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.4985 INCHES NOMINAL IN |
| Second End Diameter | 0.4985 INCHES NOMINAL IN |
| Largest Step Diameter | 0.620 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| Material Document and Classification | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 FED STD 3RD MATERIAL RESPONSE |
| First End Keyway Depth | 0.066 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INTERNAL THREADED |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 |
| Second End Internal Thread Length | 0.500 INCHES NOMINAL IN |
| External Keyway Length | 2.8800 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.1300 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 14711-526 | 3/2 Design control — primary reference U.S. Government activity |
| 14711-526 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3040-00-798-4201 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-798-4201: Step Quantity: 3; First End Diameter: 0.4985 INCHES NOMINAL IN; Second End Diameter: 0.4985 INCHES NOMINAL IN; Largest Step Diameter: 0.620 INCHES NOMINAL 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.
NSN 3040-00-798-4201 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.