The Shaft,shouldered, cataloged under National Stock Number 3040-00-352-7700, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-352-7700 |
| Primary Part Number | 4F2256 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Second End Hole Diameter | 0.1250 INCHES NOMINAL IN |
| Step Quantity | 3 |
| First End Diameter | 1.0000 INCHES NOMINAL IN |
| Second End Diameter | 1.0000 INCHES NOMINAL IN |
| Largest Step Diameter | 1.562 INCHES NOMINAL IN |
| First End Style | INTERNAL THREADED |
| First End Internal Thread Length | 0.500 INCHES NOMINAL IN |
| Second End Distance From Hole Center to End | 2.000 INCHES NOMINAL IN |
| Second End Hole Depth | 1.000 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | CROSS DRILLED HOLE AND INTERNALLY THREADED |
| Material | STEEL |
| Second End Internal Thread Length | 0.500 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 |
| Part Number | Manufacturer |
|---|---|
| 4F2256 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 3040-00-352-7700 is a Shaft,shouldered, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-352-7700 has 1 manufacturer part number on file: 4F2256 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4F2256: Second End Hole Diameter: 0.1250 INCHES NOMINAL IN; Step Quantity: 3; First End Diameter: 1.0000 INCHES NOMINAL IN; Second End Diameter: 1.0000 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.
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.