The Shaft,shouldered, cataloged under National Stock Number 3040-00-334-9428, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Hatch & Kirk, Inc.. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-334-9428 |
| Primary Part Number | HK-A74144 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Step Quantity | 8 |
| First End Diameter | 0.4375 INCHES NOMINAL IN |
| Second End Diameter | 0.7860 INCHES NOMINAL IN |
| Largest Step Diameter | 0.905 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 0.6860 INCHES NOMINAL IN |
| First End External Thread Length | 0.625 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| Second End Spline Major Diameter | 0.7860 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 15 |
| Second End Pressure Angle | 30.0 DEGREES NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| Material | STEEL |
| Second End Pitch Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Spline Length | 0.938 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 |
|---|---|
| HK-A74144 PRIMARY | Hatch & Kirk, Inc. (USA) |
| A74144 PRIMARY | Capitol Engine Co, Inc Dba Salmini Worldwide (USA) |
| Reference | Meaning |
|---|---|
| A74144 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Controls, Inc. Div Actuation Division |
| M-A74144 REV A | 5/9 Secondary reference Moparts Corp |
NSN 3040-00-334-9428 is a Shaft,shouldered, manufactured by Hatch & Kirk, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-334-9428 has 2 manufacturer part numbers on file: HK-A74144 (Hatch & Kirk, Inc.), A74144 (Capitol Engine Co, Inc Dba Salmini Worldwide).
Key specifications for HK-A74144: Step Quantity: 8; First End Diameter: 0.4375 INCHES NOMINAL IN; Second End Diameter: 0.7860 INCHES NOMINAL IN; Largest Step Diameter: 0.905 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.