The Shaft Assembly,flexible, cataloged under National Stock Number 1680-00-536-7797, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-536-7797 |
| Item Name | Shaft Assembly,flexible |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| FSC Application Data | MISCELLANEOUS AIRCRAFT ACCESSORIES AND COMPONENTS |
| Width Across Flats | 0.750 INCHES NOMINAL BOTH ENDS IN |
| Spline Type | INVOLUTE BOTH ENDS |
| Cross Section Size and Location | 0.414 INCHES NOMINAL DIAMETER BOTH ENDS IN |
| End Overall Diameter | 0.875 INCHES NOMINAL BOTH ENDS IN |
| Thread Length | 0.250 INCHES NOMINAL BOTH ENDS IN |
| End Connection Type | THREADED INTERNAL BOTH ENDS |
| Spline Length | 0.4687 INCHES NOMINAL BOTH ENDS IN |
| Pitch Diameter | 0.250 INCHES NOMINAL BOTH ENDS IN |
| Spline Major Diameter | 0.414 INCHES NOMINAL BOTH ENDS IN |
| Thread Location | INTERNAL BOTH ENDS |
| Core Diameter | 0.250 INCHES NOMINAL IN |
| Features Provided | SWIVEL END BOTH ENDS |
| Torsional Deflection Rating | 5 DEG FT-LB IN WINDING,7 DEG FT-LB IN UNWINDING |
| Thread Direction | RIGHT-HAND BOTH ENDS |
| Spline Pressure Angle in Deg | 30.0 BOTH ENDS |
| Spline Quantity | 10 BOTH ENDS |
| Casing Length Between Ferrules | 7.000 INCHES NOMINAL IN |
| Core Rotation Direction | CLOCKWISE OR COUNTERCLOCKWISE |
| Shank Outside Diameter | 0.502 INCHES NOMINAL BOTH ENDS IN |
| Core Removability | NONREMOVABLE |
| Core Overall Length | 8.350 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNS BOTH ENDS |
| Thread Class | 2A BOTH ENDS A |
| Minor Diameter | UNABLE TO DECODE |
| Wrenching Facility Type | HEXAGON BOTH ENDS |
| Material | STEEL CORE |
| Material | STEEL CASING |
| Casing Outside Diameter | 0.455 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 |
| Reference | Meaning |
|---|---|
| 39424-007-00 | C/1 Advisory reference — outside the item-of-supply concept Safran Power Usa Llc |
| 39424-007-00 | 3/9 Design control — primary reference Lucas Aerospace Power Equipment Corporation |
| 39424-007-00B | 5/9 Secondary reference Lucas Aerospace Power Equipment Corporation |
| 39424-007-00B | 5/9 Secondary reference Ge Aviation Systems Llc |
| 39424-007-00B | C/1 Advisory reference — outside the item-of-supply concept Safran Power Usa Llc |
NSN 1680-00-536-7797 is a Shaft Assembly,flexible, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-00-536-7797: FSC Application Data: MISCELLANEOUS AIRCRAFT ACCESSORIES AND COMPONENTS; Width Across Flats: 0.750 INCHES NOMINAL BOTH ENDS IN; Spline Type: INVOLUTE BOTH ENDS; Cross Section Size and Location: 0.414 INCHES NOMINAL DIAMETER BOTH ENDS IN. 29 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.