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Harken 40mm Triple Swivel Carbo Airblock

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Harken 40mm Triple Swivel Carbo Airblock
SKU #: HK_HAR2640

Regular Price: $121.15

Special Price $106.99

Availability: In stock

Harken's Carbo AirBlocks® are 60% stronger and 30% lighter than Classic blocks.  The nylon-resin sideplates are densely packed with long glass fibers for a compact block with a high strength-to-weight ratio.  Sheaves spin on high-load ball bearings with fitted races for low-friction operation. Ball bearings, sheave, and sideplates are UV-stablized for maximum protection.

Companions to the popular Harken® Black Magic® line, these small, compact blocks have very high working loads for safe, easy trimming. Use for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats.  Other common uses are mainsheet fine-tune, vangs, cunninghams, and outhauls.

Swivel blocks can lock in two directions or spin freely.




  Imperial Metric
Sheave Diameter 1 9/16 in 40 mm
Max Line Diameter 3/8 in 10 mm
Max Working Load 1,455 lb 660 kg
Breaking Load 3,050 lb 1,383 kg
Shackle Pin Diameter 3/16 in 5 mm
Weight w/ Shackle 4.6 oz 118 g
Length 3 11/16 in 94 mm
Additional Information

Additional Information

Brand Harken
Gender No
Location No
Activity No
Material Carbo
Max Working Load 1,455lb / 660kg
Max Line Diam 10 mm (3/8")
Length No