The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-253-0578, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-00-253-0578 |
| Primary Part Number | 445P |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Keyway Depth | 0.2030 INCHES NOMINAL BOTH ENDS IN |
| Bore Length | 3.0000 INCHES NOMINAL BOTH ENDS IN |
| Key Width | 0.375 INCHES NOMINAL BOTH ENDS IN |
| Design Type | INTERNAL GEAR |
| Outside Diameter | 7.0000 INCHES MINIMUM AND 7.0005 INCHES MAXIMUM IN |
| Features Provided | STANDARD GRID SPRING AND SHROUDED COUPLING BOLT TYPE AND KEYWAY |
| Bore Shape | TAPERED 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 |
|---|---|
| 445P PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| CS8048 PRIMARY | Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division (USA) |
| SL4929 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| SL4929 | 5/9 Secondary reference U.S. Government activity |
| 445P | 5/9 Secondary reference U.S. Government activity |
| CS8048 | 5/9 Secondary reference U.S. Government activity |
NSN 3010-00-253-0578 is a Coupling,shaft,flexible, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-253-0578 has 3 manufacturer part numbers on file: 445P (Curtiss-Wright Electro-Mechanical Corporation Div Epd), CS8048 (Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division), SL4929 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 445P: Keyway Depth: 0.2030 INCHES NOMINAL BOTH ENDS IN; Bore Length: 3.0000 INCHES NOMINAL BOTH ENDS IN; Key Width: 0.375 INCHES NOMINAL BOTH ENDS IN; Design Type: INTERNAL GEAR. 7 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.