The Shaft,shouldered, cataloged under National Stock Number 3040-01-428-4329, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Oberdorfer Foundries Inc. Government technical data includes 16 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 | 3040-01-428-4329 |
| Primary Part Number | A7923 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Oberdorfer Foundries Inc |
| Status | ACTIVE |
| Step Quantity | 2 |
| First End Diameter | 0.8740 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 1.264 INCHES NOMINAL IN |
| Second End Diameter | 0.6245 INCHES NOMINAL IN |
| Largest Step Diameter | 0.874 INCHES NOMINAL IN |
| First End Style | WOODRUFF KEYWAY AND CROSS DRILLED |
| Second End Keyway Width | 0.1890 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.093 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.2650 INCHES NOMINAL IN |
| Second End Style | FLAT KEYWAYS AND INTERNALLY THREADED |
| Material | STEEL CORROSION RESISTING |
| Second End Internal Thread Length | 0.625 INCHES NOMINAL IN |
| External Keyway Length | 0.992 INCHES NOMINAL FIRST END IN |
| External Keyway Length | 1.013 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.1890 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 |
|---|---|
| A7923 PRIMARY | Oberdorfer Foundries Inc (USA) |
NSN 3040-01-428-4329 is a Shaft,shouldered, manufactured by Oberdorfer Foundries Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-428-4329 has 1 manufacturer part number on file: A7923 (Oberdorfer Foundries Inc).
Key specifications for A7923: Step Quantity: 2; First End Diameter: 0.8740 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 1.264 INCHES NOMINAL IN; Second End Diameter: 0.6245 INCHES NOMINAL IN. 16 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.