Harken is a trusted name in sailing hardware, and its blocks run smooth under load thanks to quality bearings and tough sheaves. This collection covers single, double and triple blocks plus micro blocks and beckets. Choosing the Right Harken Block Start with sheave size, listed in millimeters such as 16mm or 22mm. Larger sheaves handle thicker line and higher loads with less friction. Then count the sheaves you need. A single block changes direction, while double and triple blocks build the purchase you need in a mainsheet or vang system. Beckets, Swivels and Load Ratings A becket gives you a fixed attachment point to dead-end a line, which is essential in a block and tackle setup. Swivel blocks rotate to...
38mm Double Big Bullet Block with BecketLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads....
38mm Double Big Bullet BlockLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range...
38mm Single Big Bullet Block with BecketLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads....
38mm Single Big Bullet BlockLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range...
29mm Double Bullet Block with BecketLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A...
29mm Double Bullet BlockLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...
29mm Single Bullet Block with BecketLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A...
29mm Single Bullet BlockLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...
57mm Single Carbo Ratchet Cheek BlockCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: Sheave Ø (mm): 57 mm Sheave...
57mm Carbo Single Ratchet Block with Swivel & BecketCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: Sheave Ø (mm):...
57mm Carbo Single Ratchet Block with SwivelCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.Features: On/off switch operates from both...
40mm Carbo Single Ratchet Block with Swivel Becket & Cam CleatCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: Sheave...
40mm Carbo Single Ratchet Block with Swivel & BecketCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and...
40mm Carbo Single Ratchet Block with SwivelCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have...
40mm Carbo Block 90° Fixed HeadLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have...
40mm Carbo Block with Spring & EyestrapLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks...
40mm Carbo Single Fixed BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very...
40mm/29mm Carbo Traveler BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high...
40mm Carbo Block Single with Swivel & BracketLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact...
60mm Triple Aluminum Element Block with Swivel & BecketElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust....
60mm Triple Aluminum Element Block with SwivelElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design...
60mm Double Aluminum Element Block with Swivel & BecketElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust....
60mm Double Aluminum Element Block with SwivelElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design...
60mm Single Aluminum Element Block with Swivel & BecketElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust....
Harken is a trusted name in sailing hardware, and its blocks run smooth under load thanks to quality bearings and tough sheaves. This collection covers single, double and triple blocks plus micro blocks and beckets.
Start with sheave size, listed in millimeters such as 16mm or 22mm. Larger sheaves handle thicker line and higher loads with less friction. Then count the sheaves you need. A single block changes direction, while double and triple blocks build the purchase you need in a mainsheet or vang system.
A becket gives you a fixed attachment point to dead-end a line, which is essential in a block and tackle setup. Swivel blocks rotate to align with the load and reduce twist. Always match the block working load to your line and rig loads. Micro and high-load Harken blocks cover everything from dinghy control lines to keelboat sheets, so check the rated load before you rig.
The number refers to the sheave size, such as 16mm or 22mm. A larger sheave accepts thicker line and runs with less friction under higher loads.
A becket is a fixed attachment point on the block where you can tie off or dead-end a line. It is needed when you build a multi-part block and tackle for extra purchase.
Check the maximum line diameter and working load listed for each Harken block. Choose a sheave size that accepts your line and a working load that exceeds your expected rig loads.
