40 mm Flip-Flop Block — Cam Cleat

Harken 40 mm Flip-Flop Block — Cam Cleat

The Harken 40 mm Flip-Flop Block with Cam Cleat is engineered specifically for small-boat sailors who demand efficient line management and versatile rigging options. The block pivots around the line axis, keeping lines flat and close to the deck or mast, which reduces clutter and improves deck organization. This pivoting action is central to the Flip-Flop design and makes it particularly well-suited to dinghies and other small sailboats where space is at a premium and precise control is essential.

The hinged construction is a defining feature, allowing the block to accommodate various lead angles with ease. Sailors can shift their weight for changing conditions while simultaneously making continuous trim adjustments — a critical advantage in dynamic racing or performance sailing environments. Whether beating upwind or running downwind, the block adapts smoothly to evolving line loads and angles.

Constructed from Carbo composite materials, this block delivers an excellent strength-to-weight ratio. The 40 mm sheave diameter is optimized for lines up to 1/4 inch (6 mm), providing smooth and friction-free operation even under sustained load. The maximum working load of 150 lb (68 kg) ensures reliable performance across a wide range of small-boat applications. At just 4.1 oz (117 g), the block adds minimal weight to the boat's rigging.

A Harken Micro Cam-Matic Cleat (part number 468) is mounted directly on the block, combining the functions of a ratchet block and a cleat into a single, space-saving unit. This integrated design simplifies rigging and reduces the number of components required on deck, making setup and adjustment faster and more straightforward.

Key Features

• Pivots around the line axis to keep lines close to the deck or mast
• Hinged construction allows for various lead angles and weight placement adjustments
• Includes mounted Harken Micro Cam-Matic Cleat, part number 468
• 40 mm sheave diameter compatible with lines up to 1/4 in (6 mm)
• Maximum working load of 150 lb (68 kg)
• Lightweight Carbo composite construction at 4.1 oz (117 g)
• Ideal for small boats and dinghy sailing applications