
Harken
Harken 40 mm Carbo Triple Swivel Block 2640
Harken 40 mm Carbo Air Triple Swivel Block (Model 2640) – Compact Powerhouse for High‑Load Trim
Upgrade your sail control systems with the Harken 2640, a lightweight yet powerful triple-sheave block built for demanding applications like main/jib sheets, vang systems, outhauls, traveller fine-tune, and other high-load lines on dinghies, skiffs, sportboats, and small yachts.
Innovative Carbo Air™ construction combines carbon-fibre side cheeks with a 40 mm UV-stabilised Delrin® sheave, mounted on stainless steel ball bearings and topped with a 360° swivel shackle—delivering smooth alignment, reduced friction, and superior strength.
🔧 Key Features:
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Triple 40 mm Delrin® sheaves, max line 10 mm (3/8″)
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360° stainless swivel, keeps lines twist-free under load
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Working load: 660 kg (1,455 lb); Breaking strength: approx. 1,383 kg (3,050 lb)
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Weight: 118 g (4.6 oz); Length: 94 mm (3 11/16″)
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Open Carbo Air design—30% lighter and 60% stronger than classic blocks