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57 mm Aluminum Mastbase Block

Part No. 1988
$196.05  Limited Quantities In Stock
Sheave Ø (mm)57 mm
Sheave Ø (in)2 1/4 in
Maximum line Ø (mm)10 mm
Maximum line Ø (in) 3/8 in
Maximum working load (kg)1136 kg
Maximum working load (lb)2500 lb

Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase.

Sheave Ø (mm)57 mm
Sheave Ø (in)2 1/4 in
Length (mm)81 mm
Length (in)3 3/16 in
Width (mm)35 mm
Width (in)1 3/8 in
Height (mm)73 mm
Height (in)2 7/8 in
Weight (g)175 g
Weight (oz)6.2 oz
Maximum line Ø (mm)10 mm
Maximum line Ø (in) 3/8 in
Fasteners (mm)6 FH mm
Fasteners (in)1/4 FH in
Maximum working load (kg)1136 kg
Maximum working load (lb)2500 lb
Breaking load (lb)5000 lb
Manual: 4542.pdf (open/save)
DWG: 1988.dwg (open/save)
DXF: 1988.dxf (open/save)
IGS: 1988.igs (open/save)
EPS: 1988.eps (open/save)
High-res JPG: 1988.jpg (open/save)

DO NOT use Harken Equipment for Human suspension.

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