The Shaft,shouldered, cataloged under National Stock Number 3040-01-112-8118, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-112-8118 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| FSC Application Data | DRIVE,CONSTANT SPEED,HYDRAULIC |
| Step Quantity | 5 |
| First End Diameter | 0.8120 INCHES NOMINAL IN |
| Second End Diameter | 0.5610 INCHES NOMINAL IN |
| Largest Step Diameter | 0.561 INCHES NOMINAL IN |
| First End Hole Depth | 0.251 INCHES NOMINAL IN |
| First End Style | CROSS DRILLED AND CIRCULAR GROOVED |
| Second End Keyway Width | 0.1260 INCHES NOMINAL IN |
| Material Document and Classification | MIL-STD-163 MIL STD SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.0610 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.155 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.078 INCHES NOMINAL IN |
| First End Hole Diameter | 0.1890 INCHES NOMINAL IN |
| Second End Groove Width | 0.0390 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.072 INCHES NOMINAL IN |
| First End Groove Diameter | 0.0300 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND FLAT KEYWAY |
| Material | STEEL |
| First End Groove Width | 0.0600 INCHES NOMINAL IN |
| First End Distance From Hole Center to End | 0.708 INCHES NOMINAL IN |
| External Keyway Length | 0.469 INCHES NOMINAL SECOND END 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 |
|---|---|
| 716360 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-112-8118 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6550-01-242-2234. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-112-8118: Surface Finish: 125.0 MICROINCHES; FSC Application Data: DRIVE,CONSTANT SPEED,HYDRAULIC; Step Quantity: 5; First End Diameter: 0.8120 INCHES NOMINAL IN. 23 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.