The Coupling,shaft,rigid, cataloged under National Stock Number 3010-01-025-8748, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3010-01-025-8748 |
| Primary Part Number | C4140 |
| Item Name | Coupling,shaft,rigid |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division |
| Status | ACTIVE |
| Spline Minor Diameter | 0.4210 INCHES MINIMUM AND 0.4260 INCHES MAXIMUM FIRST END IN |
| Spline Type | INVOLUTE FIRST END |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Style Designator | PLAIN SLEEVE |
| Bore Shape | SPLINED FIRST END |
| Spline Pressure Angle in Deg | 30.000 FIRST END |
| Spline Quantity | 11 FIRST END |
| 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 |
|---|---|
| C4140 PRIMARY | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division (USA) |
| Reference | Meaning |
|---|---|
| C4140 | 5/9 Secondary reference Eaton Motor Site |
| 741676-101 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 3010-01-025-8748 is a Coupling,shaft,rigid, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-025-8748 has 1 manufacturer part number on file: C4140 (Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division).
Key specifications for C4140: Spline Minor Diameter: 0.4210 INCHES MINIMUM AND 0.4260 INCHES MAXIMUM FIRST END IN; Spline Type: INVOLUTE FIRST END; Overall Diameter: 0.625 INCHES NOMINAL IN; Style Designator: PLAIN SLEEVE. 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.
NSN 3010-01-025-8748 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.