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Harken Mast Base Blocks

Harken Blocks

Harken Mast Base Blocks

Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase.  Flared cheeks prevent chafe on the halyards.

High-load bearing system has TeflonŽ composite bushing, sideload balls. Hardkote-anodized aluminum sheave for additional strength.

Part No. Description (Click for more information) Price Buy Now
har1986 Harken 44mm Halyard Block $64.55 Add to cart
har1988 Harken 57mm Fixed Mastbase Block $172.52 Add to cart
har1990 Harken 75mm Fixed Mastbase Block $265.23 Add to cart
har3123 Harken 100mm Hi-Load Fixed Mastbase Block $416.24 Add to cart

Specifications:

Part No. Description Sheave dia. (in) Sheave dia. (mm) Width (in) Width (mm) Length (in) Length (mm) Height (in) Height (mm) Max. line dia. (in) Max. line dia. (mm) Weight (oz) Weight (g) SWL (lb) SWL (kg) Breaking strength (lb) Breaking strength (kg)
1986 44 mm Halyard lead block 1 3/4 44 7/8 22 3 13/16 97 2 1/4 57 3/8 10 3.36 95 750 340 1500 680
1988 Fixed mastbase block* 2 1/4 57 1 3/8 35 3 3/16 81 2 7/8 73 3/8 10 6.2 175 2500 1136 5000 2273
1990 Fixed mastbase block** 3 76 1 5/8 41 4 5/8 117 3 3/4 95 1/2 12 11.5 326 5000 2273 10000 4544


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