The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-658-3186, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3010-00-658-3186 |
| Primary Part Number | 766538 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Securing Method | THREADED HOLE(S) SECOND END |
| Securing Method | CLAMP FIRST END |
| Threaded Hole Location | SECOND END: 0.125 IN. FROM HUB END IN |
| Bore Length | 0.2500 INCHES NOMINAL BOTH ENDS IN |
| Design Type | DOUBLE DISK |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT BOTH ENDS |
| Threaded Hole Quantity | 1 SECOND END |
| Thread Size Designator | 4-40 SECOND END |
| Bore Diameter | 0.1875 INCHES NOMINAL BOTH ENDS IN |
| 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 |
|---|---|
| 766538 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 766538A PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| C51G51E | 3/2 Design control — primary reference U.S. Government activity |
| 1668282 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3010-00-658-3186 is a Coupling,shaft,flexible, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-658-3186 has 2 manufacturer part numbers on file: 766538 (Lockheed Martin Corporation Div Rms - Mitchel Field), 766538A (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 766538: Securing Method: THREADED HOLE(S) SECOND END; Securing Method: CLAMP FIRST END; Threaded Hole Location: SECOND END: 0.125 IN. FROM HUB END IN; Bore Length: 0.2500 INCHES NOMINAL BOTH ENDS IN. 10 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.