Harken 16mm - Through-Deck High Load Ultralight Block - Part #421

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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) maximum working load.

Sheave Ø (mm)16 mm
Sheave Ø (in)5/8 in
Length (mm)60 mm
Length (in)2 3/8 in
Weight (g)18 g
Weight (oz).63 oz
Maximum line Ø (mm)5 mm
Maximum line Ø (in) 7/32 in
Fasteners (mm)4 RH mm
Fasteners (in)#8 RH in
Cutout (mm)11 x 35 mm
Cutout (in)7/16 x 1 3/8 in
Maximum working load (kg)113 kg
Maximum working load (lb)250 lb
Breaking load (kg)544 kg
Breaking load (lb)1200 lb