The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-640-2402, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-00-640-2402 |
| Primary Part Number | 597403 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Spline Minor Diameter | 0.5500 INCHES MINIMUM AND 0.5525 INCHES MAXIMUM BOTH ENDS IN |
| Securing Method | THREADED HOLE(S) SECOND END |
| Threaded Hole Location | BOTH ENDS: HOLES LOCATED IN EACH COUPLING HALF INNER END, 0.250 IN. PORM 0.030 IN. FROM END TO CENTER OF HOLE IN |
| Design Type | INTERNAL GEAR |
| Spline Length | 1.375 INCHES NOMINAL BOTH ENDS IN |
| Spline Major Diameter | 0.6492 INCHES MINIMUM AND 0.6508 INCHES MAXIMUM BOTH ENDS IN |
| Outside Diameter | 3.9375 INCHES NOMINAL IN |
| Features Provided | EXPOSED COUPLING BOLT TYPE AND FLOATING SHAFT |
| Bore Shape | SPLINED BOTH ENDS |
| Spline Quantity | 12 BOTH ENDS |
| Threaded Hole Quantity | 2 BOTH ENDS |
| Thread Size Designator | 1/4-20 THD SIZE BOTH ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 597403 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3010-00-640-2402 is a Coupling,shaft,flexible, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-640-2402 has 1 manufacturer part number on file: 597403 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 597403: Spline Minor Diameter: 0.5500 INCHES MINIMUM AND 0.5525 INCHES MAXIMUM BOTH ENDS IN; Securing Method: THREADED HOLE(S) SECOND END; Threaded Hole Location: BOTH ENDS: HOLES LOCATED IN EACH COUPLING HALF INNER END, 0.250 IN. PORM 0.030 IN. FROM END TO CENTER OF HOLE IN; Design Type: INTERNAL GEAR. 12 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.