The Shaft Assembly,flexible, cataloged under National Stock Number 1680-00-540-1373, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is S.s. White Technologies, Inc.. Government technical data includes 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-540-1373 |
| Primary Part Number | 8725Y |
| Item Name | Shaft Assembly,flexible |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | S.s. White Technologies, Inc. |
| Status | ACTIVE |
| FSC Application Data | SHAFT INSTALLATION,AMMUNITION BOOSTER |
| Width Across Flats | 1.313 INCHES NOMINAL BOTH ENDS IN |
| Cross Section Size and Location | 0.300 INCHES MINIMUM DIAMETER AND 0.305 INCHES MAXIMUM DIAMETER BOTH ENDS IN |
| End Overall Diameter | 1.313 INCHES NOMINAL BOTH ENDS IN |
| End Connection Type | THREADED INTERNAL BOTH ENDS |
| Thread Depth | 0.562 INCHES NOMINAL BOTH ENDS IN |
| Thread Location | INTERNAL BOTH ENDS |
| Core Diameter | 0.375 INCHES NOMINAL IN |
| Torsional Deflection Rating | 6.0 DEG FT-LB IN. TORSIONAL DEFLECTION RATING IN WINDING DIRECTION AND 13.0 DEG FT-LB IN. TORSIONAL DEFLECTION RATING IN UNWINDING DIRECTION |
| Thread Direction | RIGHT-HAND BOTH ENDS |
| Casing Length Between Ferrules | 40.000 INCHES NOMINAL IN |
| Core Rotation Direction | COUNTERCLOCKWISE |
| Shank Outside Diameter | 1.031 INCHES NOMINAL BOTH ENDS IN |
| Core Removability | REMOVABLE |
| Core Overall Length | 42.000 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNEF BOTH ENDS |
| Thread Class | 3 BOTH ENDS |
| Wrenching Facility Type | HEXAGON BOTH ENDS |
| Material | STEEL CORE |
| Material | STEEL CASING |
| Casing Outside Diameter | 0.656 INCHES NOMINAL IN |
| Minimum Operating Radius | 6.000 INCHES IN |
| End Type | SQUARE MALE BOTH ENDS |
| Tip Length | 1.000 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 |
|---|---|
| 8725Y PRIMARY | S.s. White Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 669294 | 5/2 Secondary reference U.S. Government activity |
| 8725Y | 5/9 Secondary reference U.S. Government activity |
NSN 1680-00-540-1373 is a Shaft Assembly,flexible, manufactured by S.s. White Technologies, Inc., classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-540-1373 has 1 manufacturer part number on file: 8725Y (S.s. White Technologies, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2910-01-327-4997. Verify interchangeability with system specifications before substitution.
Key specifications for 8725Y: FSC Application Data: SHAFT INSTALLATION,AMMUNITION BOOSTER; Width Across Flats: 1.313 INCHES NOMINAL BOTH ENDS IN; Cross Section Size and Location: 0.300 INCHES MINIMUM DIAMETER AND 0.305 INCHES MAXIMUM DIAMETER BOTH ENDS IN; End Overall Diameter: 1.313 INCHES NOMINAL BOTH ENDS IN. 24 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 1680-00-540-1373 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.