Blocks

Harken blocks have become widely accepted as the industry standard for ball bearing blocks.  We, at Discount Marine Source, are you complete source for all Harken Blocks. From the smallest control line block on a dinghy, to large Big Boat Blocks.

Ball Bearing Blocks

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Harken, 29mm Triple Carbo Block w-Cam Cleat & Becket, 347

Harken, 29mm Triple Carbo Block w-Cam Cleat & Becket, 347

Description: triple / camSheave dia. (in): 1 1/8Sheave dia. (mm): 29Length (in): 2 7/8Length (mm): 7..

$118.95

Harken, 29mm Triple Carbo Block w-Cam Cleat, 346

Harken, 29mm Triple Carbo Block w-Cam Cleat, 346

Description: Triple / swivel / becketSheave dia. (in): 1 1/8Sheave dia. (mm): 29Length (in): 3 3/8Le..

$114.95

Harken, 3.00 Heavy Duty Cruiser Block w-Becket, 12

Harken, 3.00 Heavy Duty Cruiser Block w-Becket, 12

Description: Heavy duty singleSheave dia. (in): 3Sheave dia. (mm): 76Length (in): 5 1/4Length (mm): ..

$123.15

Harken, 3.00 Heavy Duty Cruiser Block, 11

Harken, 3.00 Heavy Duty Cruiser Block, 11

Description: Ball/socket*Height (in): 1 3/4Height (mm): 44Weight (oz): 3Weight (g): 85Base dia. (in)..

$102.90

Harken, 3.00 Hexa-Cat Base w-Adjustable Cam Cleat, 170

Harken, 3.00 Hexa-Cat Base w-Adjustable Cam Cleat, 170

Description: Single/swivel/becketSheave dia. (in): 1 1/2Sheave dia. (mm): 38Length (in): 4Length (mm..

$302.95

Harken, 3.00 Hexaratchet II + 2 Block - Port, 44

Harken, 3.00 Hexaratchet II + 2 Block - Port, 44

Description: SingleSheave dia. (in): 2 1/4Sheave dia. (mm): 57Length (in): 4 1/4Length (mm): 108Weig..

$119.70

Harken, 3.00 Hexaratchet II + 2 Cheek Block (Port) w-Fasteners, 16

Harken, 3.00 Hexaratchet II + 2 Cheek Block (Port) w-Fasteners, 16

Description: Cheek (stbd)+Sheave dia. (in): 3Sheave dia. (mm): 76Length (in): 4Length (mm): 102Weigh..

$114.30

Harken, 3.00 Midrange Cheek Block, 1548

Harken, 3.00 Midrange Cheek Block, 1548

Description: TripleSheave dia. (in): 3Sheave dia. (mm): 76Length (in): 7 3/4Length (mm): 197Weight (..

$96.95

Harken, 3.00 Midrange Double Block, 1544

Harken, 3.00 Midrange Double Block, 1544

Description: Single/aluminum sheaveSheave dia. (in): 3Sheave dia. (mm): 76Length (in): 6 1/8Length (..

$248.95

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