The Shaft,shouldered, cataloged under National Stock Number 3040-00-972-8879, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is General Electric Company. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-00-972-8879 |
| Primary Part Number | 645A889-2 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Second End External Thread Length | 0.812 INCHES NOMINAL IN |
| Step Quantity | 2 |
| First End Diameter | 9.5000 INCHES NOMINAL IN |
| Second End Diameter | 0.4980 INCHES NOMINAL IN |
| Largest Step Diameter | 0.745 INCHES NOMINAL IN |
| First End Style | PLAIN |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| 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 |
|---|---|
| 645A889-2 PRIMARY | General Electric Company (USA) |
| 645A889PC2 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 645A889 | D/9 Drawing number reference only General Electric Company |
| 645A889-2 | 5/9 Secondary reference General Electric Company |
NSN 3040-00-972-8879 is a Shaft,shouldered, manufactured by General Electric Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-972-8879 has 2 manufacturer part numbers on file: 645A889-2 (General Electric Company), 645A889PC2 (General Electric Company).
Key specifications for 645A889-2: Second End External Thread Length: 0.812 INCHES NOMINAL IN; Step Quantity: 2; First End Diameter: 9.5000 INCHES NOMINAL IN; Second End Diameter: 0.4980 INCHES NOMINAL IN. 9 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.