The Shaft,shouldered, cataloged under National Stock Number 3040-01-079-8348, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-079-8348 |
| Primary Part Number | 18143FX2 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 6 |
| First End Diameter | 2.4950 INCHES NOMINAL IN |
| First End Spline Major Diameter | 2.4950 INCHES NOMINAL IN |
| Second End Diameter | 3.4340 INCHES NOMINAL IN |
| Largest Step Diameter | 3.968 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Spline Major Diameter | 3.4340 INCHES NOMINAL IN |
| First End Spline Length | 3.299 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 20 |
| Second End Style | SPLINED (STRAIGHT) |
| First End Spline Minor Diameter | 2.1440 INCHES NOMINAL IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 18143FX2 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 18143FX2 | 5/9 Secondary reference Oshkosh Corp |
| 18143F2W | 5/9 Secondary reference Oshkosh Corp |
NSN 3040-01-079-8348 is a Shaft,shouldered, manufactured by Oshkosh Defense Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-079-8348 has 1 manufacturer part number on file: 18143FX2 (Oshkosh Defense Llc).
Key specifications for 18143FX2: Surface Finish: 32.0 MICROINCHES; Step Quantity: 6; First End Diameter: 2.4950 INCHES NOMINAL IN; First End Spline Major Diameter: 2.4950 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.