Harken 57mm HL Double Block (3217)

Harken 57mm HL Double Block

Harken
SKU:
HK3217
|
UPC:
97653264590
$992.97
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Description

Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting.

Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.

Part no. 3217: 57mm Aluminum Double Block - Swivel

Specifications

  • Sheave Ø (mm) 57 mm
  • Sheave Ø (in) 2 1/4 in
  • Length (mm) 132 mm
  • Length (in) 5 3/16 in
  • Weight (g) 336 g
  • Weight (oz) 11.86 oz
  • Shackle pin Ø (mm) 8 mm
  • Shackle pin Ø (in) 5/16 in
  • Maximum line Ø (mm) 12 mm
  • Maximum line Ø (in) 7/16 in
  • Maximum working load (kg) 1633 kg
  • Maximum working load (lb) 3600 lb
  • Breaking load (kg) 3267 kg
  • Breaking load (lb) 7200 lb

 

Resources/References