The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-447-9791, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-00-447-9791 |
| Primary Part Number | 8077938 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc |
| Status | ACTIVE |
| Securing Method | THREADED HOLE(S) SECOND END |
| Securing Method | THREADED HOLE(S) FIRST END |
| Threaded Hole Location | BOTH ENDS: DISTANCE A/A FROM END OF HUB |
| Design Type | INSERT |
| Keying Facility Type | KEYWAY FIRST END |
| Keying Facility Type | KEYWAY SECOND END |
| Keying Facility Spacing in Deg | 180.0 SECOND END |
| Keying Facility Spacing in Deg | 360.0 FIRST END |
| Outside Diameter | 2.125 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT FIRST END |
| Bore Shape | STRAIGHT SECOND END |
| Keying Facility Quantity | 1 FIRST END |
| Keying Facility Quantity | 2 SECOND END |
| Threaded Hole Quantity | 1 SECOND END |
| Threaded Hole Quantity | 1 FIRST END |
| Thread Size Designator | 5/16-24 FIRST END |
| Thread Size Designator | 5/16-24 SECOND END |
| 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 |
|---|---|
| 8077938 PRIMARY | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc (USA) |
| Reference | Meaning |
|---|---|
| 8077938 | 3/9 Design control — primary reference General Motors Corp Electro-Motive Div |
| 8077938 | 5/9 Secondary reference General Motors Corp |
NSN 3010-00-447-9791 is a Coupling,shaft,flexible, manufactured by Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-447-9791 has 1 manufacturer part number on file: 8077938 (Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-616-3346. Verify interchangeability with system specifications before substitution.
Key specifications for 8077938: Securing Method: THREADED HOLE(S) SECOND END; Securing Method: THREADED HOLE(S) FIRST END; Threaded Hole Location: BOTH ENDS: DISTANCE A/A FROM END OF HUB; Design Type: INSERT. 17 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.