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, 1

Harken, 1" Wire Forkhead Block w-Bkt, 466

*: Shackle to shackleDistance between pins (in): 5 11/16*Distance between pins (mm): 144*Max. luff w..

$39.99

Harken, 1.00 Single Wire Block, 300

Harken, 1.00 Single Wire Block, 300

Description: Wire fairleadWeight (oz): .50Weight (g): 14Fastener spacing (in): 1 1/2Fastener spacing..

$37.99

Harken, 1.00 Wire Sheave, 303
Harken, 1.00 Wire Thru Deck Block, 302

Harken, 1.00 Wire Thru Deck Block, 302

Description: Cheek+ *Sheave dia. (in): 1Sheave dia. (mm): 25Weight (oz): 1.25Weight (g): 35Max. wire..

$48.99

Harken, 1.50 Single Wire Block w-Becket, 313

Harken, 1.50 Single Wire Block w-Becket, 313

Description: Adjustable pinstop/shackleLength (in): 4 7/16Length (mm): 113Width (in): 2 1/4Width (mm..

$70.99

Harken, 1.50 Single Wire Block, 304
Harken, 1.50 Wire Sheave, 307
Harken, 1.50 Wire Thru Deck Block, 306

Harken, 1.50 Wire Thru Deck Block, 306

Description: Cheek+ **Sheave dia. (in): 1 1/2Sheave dia. (mm): 38Weight (oz): 3.25Weight (g): 92Max...

$68.99

Harken, 100mm ESP Footblock, 6093
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