The Shaft,turbine,aircraft Gas Turbi, cataloged under National Stock Number 2840-00-779-3970, 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 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-779-3970 |
| Item Name | Shaft,turbine,aircraft Gas Turbi |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Status | ACTIVE |
| Hardness Rating | 37.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | -3703 CAGE 91547 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2-101-238-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2840-00-779-3970 is a Shaft,turbine,aircraft Gas Turbi, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
Key specifications for 2840-00-779-3970: Hardness Rating: 37.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL; Material Document and Classification: -3703 CAGE 91547 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Overall Length: 23.709 INCHES NOMINAL IN; Special Features: FIRST END OD THD; 2.5625 IN.-16NS 3A THD; 0.286 IN. NOM THD LG; SECOND END OD THD; 3.2812 IN.-16NS 3A THD; 0.39 IN. NOM THD LG; 3.0937 IN.-12NS 3A THD ON OD 2.123 MIN 2.127 MAX IN. FROM FIRST END; EXTERNAL SPLINES ON OD; 65 SPLINES; 30 DEG PRESSURE ANGLE; 2.7083 IN. NOM PITCH DIA; 0.576 MIN 0.588 MAX IN. LG SPLINES; 0.762 MIN 0.774 MAX IN. FROM FIRST END TO SPLINES; 79 SPLINES; 30 DEG PRESSURE ANGLE; 3.2917 IN. NOM PITCH DIA; 0.58 MIN 0.66 MAX IN. LG SPLINES; 2.846 MIN 2.89 MAX IN. FROM SECOND END TO SPLINES; 106 SPLINES; 30 DEG PRESSURE ANGLE; 3.3125 IN. NOM PITCH DIA; 0.081 MIN 0.085 MAX IN. LG SPLINES; 0.36 MIN 0.37 MAX IN. FROM SECOND END TO SPLINES A. 2 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.
NSN 2840-00-779-3970 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.