The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-340-1598, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Indal Technologies Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3010-01-340-1598 |
| Primary Part Number | 6534D428-1 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Indal Technologies Inc |
| Status | ACTIVE |
| Securing Method | KEY BOTH ENDS |
| Design Type | INSERT |
| Keying Facility Type | KEYWAY BOTH ENDS |
| Features Provided | KEYWAY AND EXPOSED COUPLING BOLT TYPE AND SHROUDED COUPLING BOLT TYPE |
| Bore Shape | STRAIGHT BOTH ENDS |
| Keying Facility Quantity | 1 BOTH ENDS |
| Width | 4.560 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 6534D428-1 | Indal Technologies Inc (CAN) |
| 6534D428-1 | Navpar Inc (USA) |
| Reference | Meaning |
|---|---|
| 6534D428 | D/9 Drawing number reference only U.S. Government activity |
| 6534D428-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3010-01-340-1598 is a Coupling,shaft,flexible, manufactured by Indal Technologies Inc, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-340-1598 has 2 manufacturer part numbers on file: 6534D428-1 (Indal Technologies Inc), 6534D428-1 (Navpar Inc).
Key specifications for 6534D428-1: Securing Method: KEY BOTH ENDS; Design Type: INSERT; Keying Facility Type: KEYWAY BOTH ENDS; Features Provided: KEYWAY AND EXPOSED COUPLING BOLT TYPE AND SHROUDED COUPLING BOLT TYPE. 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.