The Shaft,accessory Drive, cataloged under National Stock Number 2840-00-784-3989, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-784-3989 |
| Item Name | Shaft,accessory Drive |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL AMS6415,BLACK OXIDE FINISH AMS2481,ROCKWELL C SCALE 37 MIN,42MAX HARDNESS,6.738 IN. MIN,6.753 IN. MAX O/A LG,0.500 IN. MIN,0.510 IN.MAX INTERMEDIATE SHAFT OD,BOTH ENDS EXTERNAL SPLINE,9 TEETH,0.620 IN.MIN,0.625 IN. MAX OD,0.5625 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1-080-282-01 | 3/2 Design control — primary reference U.S. Government activity |
| 1-080-282-01 | 5/9 Secondary reference Rolls-Royce Deutschland Ltd & Co Kg |
| 1-080-282-01 | C/1 Advisory reference — outside the item-of-supply concept Ozark Aeroworks Llc |
NSN 2840-00-784-3989 is a Shaft,accessory Drive, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
Key specifications for 2840-00-784-3989: General Characteristics Item Description: STEEL AMS6415,BLACK OXIDE FINISH AMS2481,ROCKWELL C SCALE 37 MIN,42MAX HARDNESS,6.738 IN. MIN,6.753 IN. MAX O/A LG,0.500 IN. MIN,0.510 IN.MAX INTERMEDIATE SHAFT OD,BOTH ENDS EXTERNAL SPLINE,9 TEETH,0.620 IN.MIN,0.625 IN. MAX OD,0.5625 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE IN. 1 specification is 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.