Harken 16 mm Triple Air Block

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The 16 mm is Harken's® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) safe working load - the highest on the market compared to similarly sized blocks.

Use for: Dinghy control lines, Spinnaker pole trip lines, Big Boat leech lines, Outhauls, Downhauls, Cunninghams, Traveler controls and Halyards on prams. 

Part Number: 408


  Imperial Metric
Sheave Dia. 5/8" 16 mm
Length 1 13/16" 46 mm
Weight 1.44 oz 41 gr
Max Line Dia. 7/32" 5 mm
Maximum Working Load 700 lbs 318 kg
Breaking Load 1200 lbs 544 kg


Need help to design your Harken system - take a look here for the Harken System Guides and Drawings
Or perhaps you need some other information (load calculators, block selectors, service instructions or manuals)?   Take a look here for all the official Harken Support Information