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16 mm Flip-flop Block 16 mm Flip-flop Block
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16 mm Flip-flop Block

Part No. 437
$38.85  In Stock
Sheave Ø (mm)16 mm
Sheave Ø (in)5/8 in
Maximum line Ø (mm)5 mm
Maximum line Ø (in) 7/32 in
Maximum working load (kg)113 kg
Maximum working load (lb)250 lb

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)0.75 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 (kg)544 kg
Breaking load (lb)1200 lb
Manual: 4852.pdf (open/save)
DWG: 437.dwg (open/save)
DXF: 437.dxf (open/save)
EPS: 437.eps (open/save)
High-res JPG: 437.jpg (open/save)

DO NOT use Harken Equipment for Human suspension.

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