The Coupling,free Wheel, cataloged under National Stock Number 3010-01-485-4241, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Hilliard Corp. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-01-485-4241 |
| Primary Part Number | 6506-7000 |
| Item Name | Coupling,free Wheel |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | The Hilliard Corp |
| Status | ACTIVE |
| Overall Diameter | 2.0625 INCHES NOMINAL IN |
| Functional Description | PROVIDES POSITIVE ENGAGEMENT AND HIGH TORQUE ON DEMAND |
| 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 |
|---|---|
| 122-6818601 PC 77 | Naval Sea Systems Command (USA) |
| 122-6722635 PC 26 | Naval Sea Systems Command (USA) |
| 6506-7000 PRIMARY | The Hilliard Corp (USA) |
| Reference | Meaning |
|---|---|
| 1-1/2-1-3EL | 3/9 Design control — primary reference The Hilliard Corp |
| 6722635 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3010-01-485-4241 is a Coupling,free Wheel, manufactured by The Hilliard Corp, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-485-4241 has 3 manufacturer part numbers on file: 122-6818601 PC 77 (Naval Sea Systems Command), 122-6722635 PC 26 (Naval Sea Systems Command), 6506-7000 (The Hilliard Corp).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-488-6016. Verify interchangeability with system specifications before substitution.
Key specifications for 6506-7000: Overall Diameter: 2.0625 INCHES NOMINAL IN; Overall Length: 2.0000 INCHES NOMINAL IN; Special Features: COUPLING BORED 0.5000 IN. ONE END AND 0.3750 OTHER END IN; Functional Description: PROVIDES POSITIVE ENGAGEMENT AND HIGH TORQUE ON DEMAND. 2 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.