Harken Blocks are essential components for sailboats, designed to handle loaded control lines with efficiency and precision. These boat blocks, including small boat blocks and ratchet blocks, come in various configurations to suit different sailing nee
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1-2 weeks delivery time Harken 466 25 mm Forkhead Wire Block Becket is a lightweight, low-friction guide for wire halyards and control lines, accommodating up to 4 mm lines and a breaking load of 907 kg.
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$ 82.61
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1-2 weeks delivery time The Harken 477 underdeck furling system is designed for small boats from 4.8 m to 9 m, featuring a drum that lowers tack height for better sail area and offers optional hoistable ball bearing halyard swivel for easy sail handling without removing the headstay, weighing 661 g with a maximum working load of 431 kg.
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$ 2,013.29
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1-2 weeks delivery time The Harken 478 underdeck furling system suits sportboats and daysailers from 4.8 m to 9 m, with an underdeck drum that reduces tack height and an optional hoistable halyard swivel for convenient sail adjustment, weighing 2721 g and supporting up to 1361 kg.
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$ 4,841.99
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1-2 weeks delivery time The Harken 479 stainless steel furling tack adapter tang adapts headstay pin diameters to standard Harken Small Boat underdeck furling clevis pins, includes a third hole for jib luff tension adjustment, measures 65 mm by 57 mm, and handles a maximum working load of 1361 kg.
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$ 248.24
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1-2 weeks delivery time The Harken 480 stainless steel furling tack adapter tang allows headstay pin adaptation to standard clevis pin size, includes an extra hole for luff tension adjustments, measures 65 mm by 57 mm, and supports a maximum working load of 1361 kg.
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$ 248.24
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1-2 weeks delivery time The Harken 481 stainless steel furling tack adapter tang adjusts headstay pin diameters to standard clevis pin size, features a third hole for lashing to adjust jib luff tension, measures 65 mm by 57 mm, and can handle a maximum working load of 1361 kg.
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$ 248.24
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1-2 weeks delivery time The Harken 482 hoistable ball bearing halyard swivel can be mounted on a headstay to raise or lower the sail independently of the headstay, supports a maximum working load of 1361 kg, and fits furling unit 478L with a shackle-to-shackle length of 193 mm.
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$ 768.51
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1-2 weeks delivery time The Harken 483 Small Boat hoistable furling system allows trailerable cruisers or dinghy sailors to set and furl the jib from the cockpit, with a hoistable ball bearing swivel for independent luff tensioning, supporting a maximum working load of 431 kg and suitable for monohulls 4.9–6.1 m and multihulls up to 5.5 m.
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$ 1,129.31
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1-2 weeks delivery time The Harken 489 stainless steel furling tack adapter tang adapts headstay pin diameters to standard clevis pins, includes a third hole for lashing to adjust jib luff tension, measures 60 mm by 51 mm, and supports a maximum working load of 907 kg.
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$ 248.24
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1-2 weeks delivery time The Harken 493 underdeck furling system for sportboats and daysailers from 4.8 m to 9 m positions the drum beneath the deck to lower tack height, maximizes sail area, and allows an optional hoistable ball bearing halyard swivel, with a weight of 1433 g and maximum working load of 907 kg.
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$ 3,131.78
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1-2 weeks delivery time The Harken 500 Big Boat 76 mm ball bearing aluminum sheave accommodates lines up to 14 mm, constructed from hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum with Torlon® rollers and Delrin® balls for load support and UV protection, supporting a maximum working load of 2245 kg.
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$ 422.15
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1-2 weeks delivery time The Harken 518 Big Boat 114 mm ball bearing aluminum sheave handles lines up to 18 mm, made from hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum with Torlon® rollers and Delrin® balls, supporting a maximum working load of 3401 kg.
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$ 1,035.51
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1-2 weeks delivery time The Harken 519 Big Boat 140 mm ball bearing aluminum sheave manages lines up to 22 mm, constructed from hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum with Torlon® rollers and Delrin® balls for radial and sideload support, and a maximum working load of 4127 kg.
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$ 1,342.20
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1-2 weeks delivery time The Harken 520 Big Boat 178 mm ball bearing aluminum sheave supports lines up to 22 mm, made from hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum with Torlon® rollers and Delrin® balls, capable of a maximum working load of 6349 kg.
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$ 2,186.48
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1-2 weeks delivery time The Harken 547 32 mm Torlon® balls, 10 mm in diameter, are crush- and impact-resistant, designed to endure heavy usage and shock loading, supplied in a quantity of 25 pieces.
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$ 55.92
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1-2 weeks delivery time The Harken 548 32 mm low-beam endstops absorb shock loads, suitable for use where end controls are absent, with dimensions of 72 mm by 52 mm and designed for R32 tracks or rails.
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$ 82.27
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1-2 weeks delivery time The Harken 550 Big Boat 102 mm ball bearing aluminum sheave handles lines up to 14 mm, built from hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum with Torlon® rollers and Delrin® balls, supporting a maximum working load of 2245 kg.
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$ 649.45
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1-2 weeks delivery time The Harken 562 High-Beam Endstops come in a set of two and are designed to enhance systems where end controls are not used, effectively absorbing shock loads for increased durability and protection, compatible with R32HB tracks.
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$ 132.77
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1-2 weeks delivery time The Harken 580 32mm Car Coupler is a stainless steel component for joining two cars in high-load assemblies, suitable for single-point attachments and compatible with T3201B and T3201B.HL cars, providing reliable strength and performance.
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$ 1,057.15
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1-2 weeks delivery time The Harken 603 76mm Ball Bearing Aluminum Sheave is made from hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum with Torlon® rollers and carbon-black Delrin® balls, designed for special applications and replacements in Big Boat blocks, handling high radial and sideloads.
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$ 696.35
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What are the key features of a Harken Element Block and how is it used in sailing?
Harken Element Blocks are designed with durability and performance in mind, featuring a combination of aluminum side plates and composite sheaves. These blocks are ideal for a variety of sailing applications, from halyards to control lines. Their bearing system ensures smooth operation under both high and low loads, making them suitable for fast trim and release. Available in various configurations such as single block, fiddle block, and snatch block, they cater to the diverse needs of sailors.
The 16mm Micro Block is perfect for light load applications on small sailboats, while the 75mm Carbo Block is better suited for handling larger loads on bigger boats. Harken’s selection of blocks, including the Element Fiddle and Carbo Fiddle Block, are considered some of the best in the industry, providing reliable performance for both cruising and racing scenarios.
How does a fiddle block differ from a single block in terms of functionality
A fiddle block differs from a single block in that it has two sheaves, allowing it to manage more complex rigging setups and offer greater mechanical advantage. This makes it ideal for applications where precise trimming and efficient release under high or low loads are required. Fiddle blocks, like the 16 mm and bullet blocks in Harken's selection of sailboat blocks, are essential for leading control lines aft and ensuring smooth operation in various sailing conditions.
How does a micro block differ from a standard block in terms of usage on a sailboat?
A micro block differs from a standard block in terms of size and weight, making it ideal for applications where space and weight savings are crucial. Classic blocks, such as those in the selection of Harken blocks, include micro blocks designed for smooth and efficient trim and release under high loads. These compact blocks, like the triple carbo, are made with high-quality materials to ensure durability and performance, making them some of the best blocks available in Harken hardware.