Harken midrange blocks
Harken Harken sailboat hardware
  • Harken midrange blocks

Harken Midrange Single Blocks

Harken Midrange Single Blocks are used for main sheets, spinnaker sheets, halyards and control lines. 3 Inch diameter sheave with robust construction is ideal for high loads on medium and large offshore boats.

Free-rolling Delrin ball bearings, sheave and sideplates UV-stabilized with carbon-black additive for maximum protection. A stainless steel sidestrap wraps across the block head for increased strength and safety.

The wide-diameter 3.00 inch (76 mm) ball bearing sheave accepts 9/16 in (14 mm) line. High-load Midrange blocks use Torlon ball bearings.

$148.54 / ea
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Tech Spec Product Info User Generated Content
Aluminum sheave model has increased wear resistance for wire.



1540 Midrange


1542 Aluminum Sheave/ Wire


1586 High Load

Sheave diameter  3 inch  3 inch  3 inch 
Length  6-1/8 inch  6-1/8 inch  6-1/8 inch 
Weight  13 oz  15 oz  13 oz 
Max. line diameter  9/16 inch  9/16 inch  9/16 inch 
Shackle pin diameter  5/16 inch  5/16 inch  5/16 inch 
Safe Working Load  1800 lbs  1800 lbs  2300 lbs 
Breaking Strength  5000 lbs  5000 lbs  5000 lbs 
BRAND: Harken
Type: Blocks and Sheaves
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