The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-321-6517, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-321-6517 |
| Primary Part Number | 138C519H01 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Securing Method | CLAMP BOTH ENDS |
| Bore Length | 0.1880 INCHES NOMINAL BOTH ENDS IN |
| Design Type | DISK |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT BOTH ENDS |
| 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 |
|---|---|
| 138C519H01 | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 138C519 | 7/9 Vendor item drawing reference U.S. Government activity |
| E51H51H | 3/2 Design control — primary reference U.S. Government activity |
| 138C519H01 | 5/9 Secondary reference U.S. Government activity |
| 138C519 | 7/2 Vendor item drawing reference Northrop Grumman Support Services Corp |
NSN 3010-01-321-6517 is a Coupling,shaft,flexible, manufactured by Northrop Grumman Support Services Corp, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-321-6517 has 1 manufacturer part number on file: 138C519H01 (Northrop Grumman Support Services Corp).
Key specifications for 138C519H01: Securing Method: CLAMP BOTH ENDS; Bore Length: 0.1880 INCHES NOMINAL BOTH ENDS IN; Design Type: DISK; Overall Length: 0.844 INCHES NOMINAL IN. 6 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.