The Shaft,shouldered, cataloged under National Stock Number 3040-01-370-2848, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Microwave Engineering Corporation. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-370-2848 |
| Primary Part Number | 179B8412AY1 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Step Quantity | 12 |
| First End Diameter | 2.6250 INCHES MAXIMUM IN |
| Second End Diameter | 2.3750 INCHES MAXIMUM IN |
| Largest Step Diameter | 4.3780 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Second End Keyway Width | 0.6250 INCHES MAXIMUM IN |
| Second End Keyway Depth | 0.3120 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | STEEL |
| External Keyway Length | 3.0000 INCHES NOMINAL SECOND END 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 |
|---|---|
| 179B8412AY1 PRIMARY | Microwave Engineering Corporation (USA) |
| 119D3966 PART 8 | General Electric Company Dba Ge (USA) |
| 179B8412AY1 | General Electric Company Dba Ge (USA) |
| Reference | Meaning |
|---|---|
| 119D3966 | D/9 Drawing number reference only General Electric Company Dba Ge |
NSN 3040-01-370-2848 is a Shaft,shouldered, manufactured by Microwave Engineering Corporation, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-370-2848 has 3 manufacturer part numbers on file: 179B8412AY1 (Microwave Engineering Corporation), 119D3966 PART 8 (General Electric Company Dba Ge), 179B8412AY1 (General Electric Company Dba Ge).
Key specifications for 179B8412AY1: Step Quantity: 12; First End Diameter: 2.6250 INCHES MAXIMUM IN; Second End Diameter: 2.3750 INCHES MAXIMUM IN; Largest Step Diameter: 4.3780 INCHES MAXIMUM IN. 11 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.