The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-252-6304, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is TB Woods's Corporation. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-252-6304 |
| Primary Part Number | 7S1787S1147 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | TB Woods's Corporation |
| Status | ACTIVE |
| Keyway Depth | 0.1250 INCHES NOMINAL BOTH ENDS IN |
| Securing Method | THREADED HOLE(S) BOTH ENDS |
| Threaded Hole Location | BOTH ENDS: 0.3437 IN. FROM END OF HUB IN |
| Bore Length | 1.8437 INCHES NOMINAL BOTH ENDS IN |
| Design Type | INSERT |
| Keying Facility Type | KEYWAY BOTH ENDS |
| Outside Diameter | 4.625 INCHES NOMINAL IN |
| Features Provided | KEYWAY |
| Bore Shape | STRAIGHT BOTH ENDS |
| Keying Facility Quantity | 1 BOTH ENDS |
| Threaded Hole Quantity | 1 BOTH ENDS |
| Thread Size Designator | 3/8-16 SECOND END |
| Thread Size Designator | 9/16-12 FIRST END |
| Keyway Width | 0.500 INCHES NOMINAL FIRST END IN |
| Keyway Width | 0.250 INCHES NOMINAL SECOND END IN |
| Bore Diameter | 1.2500 INCHES NOMINAL SECOND END IN |
| Bore Diameter | 1.8750 INCHES NOMINAL FIRST END IN |
| Furnished Items and Quantity | SETSCREW 2 |
| Insert Material | RUBBER CHLOROPRENE CLASS CR |
| 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 |
|---|---|
| 7S1787S1147 PRIMARY | TB Woods's Corporation (USA) |
| Reference | Meaning |
|---|---|
| 7E/2-7SX1-7/8X1-1/4 | 5/9 Secondary reference TB Woods's Corporation |
| F440-29786 | 5/9 Secondary reference TB Woods's Corporation |
| PE, 125278, 1252 3/8 | 5/9 Secondary reference TB Woods's Corporation |
NSN 3010-01-252-6304 is a Coupling,shaft,flexible, manufactured by TB Woods's Corporation, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-252-6304 has 1 manufacturer part number on file: 7S1787S1147 (TB Woods's Corporation).
Key specifications for 7S1787S1147: Keyway Depth: 0.1250 INCHES NOMINAL BOTH ENDS IN; Securing Method: THREADED HOLE(S) BOTH ENDS; Threaded Hole Location: BOTH ENDS: 0.3437 IN. FROM END OF HUB IN; Bore Length: 1.8437 INCHES NOMINAL BOTH ENDS IN. 19 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.