The Shaft Assembly,flexible, cataloged under National Stock Number 1680-00-618-2142, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Safran Power Usa Llc. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1680-00-618-2142 |
| Primary Part Number | 127668-019-24 |
| Item Name | Shaft Assembly,flexible |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Safran Power Usa Llc |
| Status | ACTIVE |
| FSC Application Data | MISCELLANEOUS ACFT ACCESSORIES AND COMPONENTSMISCELLANEOUS ACFT ACCESSORIES AND COMPONENTS |
| Width Across Flats | 0.875 INCHES NOMINAL BOTH ENDS0.875 INCHES NOMINAL BOTH ENDS IN |
| Cross Section Size and Location | 0.469 INCHES NOMINAL DIAMETER BOTH ENDS0.469 INCHES NOMINAL DIAMETER BOTH ENDS IN |
| Casing Protective Device Type | RUBBER COVERRUBBER COVER |
| End Overall Diameter | 0.531 INCHES NOMINAL BOTH ENDS0.531 INCHES NOMINAL BOTH ENDS IN |
| End Connection Type | UNION FERRULE BOTH ENDSUNION FERRULE BOTH ENDS |
| Thread Depth | 0.328 INCHES NOMINAL BOTH ENDS0.328 INCHES NOMINAL BOTH ENDS IN |
| Thread Location | INTERNAL BOTH ENDSINTERNAL BOTH ENDS |
| Core Diameter | 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN |
| Torsional Deflection Rating | 12 DEG FT-LB IN. TORSIONAL DEFLECTION RATING WINDING,16 DEG UNWINDING12 DEG FT-LB IN. TORSIONAL DEFLECTION RATING WINDING,16 DEG UNWINDING |
| Thread Direction | RIGHT-HAND BOTH ENDSRIGHT-HAND BOTH ENDS |
| Casing Length Between Ferrules | 19.612 INCHES NOMINAL19.612 INCHES NOMINAL IN |
| Core Rotation Direction | CLOCKWISE OR CLOCKWISE OR COUNTERCLOCKWISECOUNTERCLOCKWISE |
| Shank Outside Diameter | 0.812 INCHES NOMINAL BOTH ENDS0.812 INCHES NOMINAL BOTH ENDS IN |
| Core Removability | NONREMOVABLENONREMOVABLE |
| Core Overall Length | 21.374 INCHES NOMINAL21.374 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNEF BOTH ENDSUNEF BOTH ENDS |
| Thread Class | 2B BOTH ENDS2B BOTH ENDS |
| Wrenching Facility Type | HEXAGON BOTH ENDSHEXAGON BOTH ENDS |
| Material | STEEL CASINGSTEEL CASING |
| Material | STEEL CORESTEEL CORE |
| Casing Outside Diameter | 0.790 INCHES NOMINAL0.790 INCHES NOMINAL IN |
| Minimum Operating Radius | 18.000 INCHES18.000 INCHES IN |
| End Type | ROUND, INTERNAL SPLINED BOTH ENDSROUND, INTERNAL SPLINED BOTH ENDS |
| Tip Length | 0.879 INCHES NOMINAL BOTH ENDS0.879 INCHES NOMINAL BOTH ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 127668-019-24 PRIMARY | Safran Power Usa Llc (USA) |
| Reference | Meaning |
|---|---|
| 127668-019-24 | 5/9 Secondary reference Ge Aviation Systems Llc |
| 127668-019-24 | 3/9 Design control — primary reference Lucas Aerospace Power Equipment Corporation |
NSN 1680-00-618-2142 is a Shaft Assembly,flexible, manufactured by Safran Power Usa Llc, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-618-2142 has 1 manufacturer part number on file: 127668-019-24 (Safran Power Usa Llc).
Key specifications for 127668-019-24: FSC Application Data: MISCELLANEOUS ACFT ACCESSORIES AND COMPONENTSMISCELLANEOUS ACFT ACCESSORIES AND COMPONENTS; Width Across Flats: 0.875 INCHES NOMINAL BOTH ENDS0.875 INCHES NOMINAL BOTH ENDS IN; Cross Section Size and Location: 0.469 INCHES NOMINAL DIAMETER BOTH ENDS0.469 INCHES NOMINAL DIAMETER BOTH ENDS IN; Casing Protective Device Type: RUBBER COVERRUBBER COVER. 25 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 1680-00-618-2142 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.