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Harken 57mm Low Load Block
$197.95
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.
Low-load
blocks have red isolators. They use Torlon® rollers and 316 stainless
steel shackles. Standard blocks have 17-4 PH stainless headposts.
Sheave Ø (mm)57 mm
Sheave Ø (in)2 1/4 in
Length (mm)119 mm
Length (in)4 11/16 in
Weight (g)154 g
Weight (oz)5.44 oz
Shackle pin Ø (mm)6 mm
Shackle pin Ø (in)1/4 in
Maximum line Ø (mm)12 mm
Maximum line Ø (in)7/16 in
Maximum working load (kg)750 kg
Maximum working load (lb)1655 lb
Breaking load (kg)1500 kg
Breaking load (lb)3310 lb
P2 Marine
306 S Lake Dr
Stevensville, MD 21666
USA
Toll Free: (800) 456-6740
Local: (443) 569-8529
Email: [email protected]
Office Hours: M-F 8:30:-5:00 Eastern