Harken 16mm Flip-flop Block 437

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  • Regular price $73.00
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  • In stock (2 units), ready to be shipped


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) maximum working load.

Sheave Ø (mm) 16 mm
Sheave Ø (in) 5/8 in
Length (mm) 34 mm
Length (in) 1 5/16 in
Weight (g) 21 g
Weight (oz) .75 oz
Maximum line Ø (mm) 5 mm
Maximum line Ø (in) 7/32 in
Fasteners (mm) 4 RH mm
Fasteners (in) #8 RH in
Maximum working load (kg) 113 kg
Maximum working load (lb) 250 lb
Breaking load (lb) 1200 lb
Breaking load (kg) 544 kg