These multipurpose blocks are a must on racing yachts of all sizes. Opening sideplates make them easy to deploy, allowing crew to quickly fasten them wherever needed - perfect for temporary leads, line deflection, and static line functions requiring small adjustments. A strop soft-attach is fixed on one side, but is easily removable on the other.
- The strop carries the block’s primary load and articulates for a fair lead. The Velcro strap is permanently attached to one sideplate and holds the block securely closed when sideplates are aligned—even under the highest loads. The strap has a broad reflective tab for easier operation with gloves.
- Harken composite bearing technology (ULC) ensures sheaves turn smoothly and maintain efficiency under extreme loading. Snap-fit Torlon bearings carry sideloads.
- An integral headspacer prevents Hard Lube-anodized aluminium sideplates from deflecting and binding. The wide sheave allows a range of line diameters.
Note: DO NOT use Harken equipment for human suspension unless product is specifically certified and labelled for such use.
| Part Number | Sheave Diameter | Loop Diameter | Use Loop | Max. Line Diameter | Max. Working Load | Breaking Load | Weight |
|---|---|---|---|---|---|---|---|
| HKN-3300 | 56mm | 10mm | HCP1772 | 16mm | 5000kg | 10000kg | 245g |
