The Shaft,shouldered, cataloged under National Stock Number 3040-01-420-1122, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-420-1122 |
| Primary Part Number | N2256 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division |
| Status | ACTIVE |
| Surface Finish | 16.0 MICROINCHES |
| Step Quantity | 6 |
| First End Diameter | 1.6190 INCHES MINIMUM AND 1.6200 INCHES MAXIMUM IN |
| Second End Diameter | 1.3800 INCHES NOMINAL IN |
| Second End Step Length | 1.5000 INCHES NOMINAL IN |
| Largest Step Diameter | 2.2430 INCHES MINIMUM AND 2.2450 INCHES MAXIMUM IN |
| First End Style | INTERNAL THREADED |
| First End Internal Thread Length | 0.3800 INCHES NOMINAL IN |
| Material Document and Classification | AST-564 ASSN STD SINGLE MATERIAL RESPONSE |
| Second End Tongue Width | 1.3800 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Tongue Thickness | 1.0000 INCHES NOMINAL IN |
| Second End Style | TONGUE ROUNDED ENDS |
| Material | STEEL COMP 17-4PH |
| 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 |
| Part Number | Manufacturer |
|---|---|
| N2256 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division (USA) |
| 1903-1391 ITEM 12 | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division (USA) |
| Reference | Meaning |
|---|---|
| 1903-1391 | D/9 Drawing number reference only Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division |
NSN 3040-01-420-1122 is a Shaft,shouldered, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-420-1122 has 2 manufacturer part numbers on file: N2256 (Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division), 1903-1391 ITEM 12 (Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division).
Key specifications for N2256: Surface Finish: 16.0 MICROINCHES; Step Quantity: 6; First End Diameter: 1.6190 INCHES MINIMUM AND 1.6200 INCHES MAXIMUM IN; Second End Diameter: 1.3800 INCHES NOMINAL IN. 14 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 3040-01-420-1122 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.