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102mm Aluminum Mastbase Block

Part No. 3123

Sheave Ø (mm) 102 mm

Sheave Ø (in) 4 in

Maximum line Ø (mm) 18 mm

Maximum line Ø (in) 11/16 in

Maximum working load (kg) 4990 kg

Maximum working load (lb) 11000 lb

Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase.
Sheave Ø (mm)102 mm
Sheave Ø (in)4 in
Length (mm)130 mm
Length (in)5 1/8 in
Width (mm)41 mm
Width (in)1 5/8 in
Height (mm)130 mm
Height (in)5 1/8 in
Weight (g)708 g
Weight (oz)24.9 oz
Maximum line Ø (mm)18 mm
Maximum line Ø (in) 11/16 in
Number of fasteners2
Fasteners (mm)16 HH mm
Fasteners (in)5/8 HH in
Maximum working load (kg)4990 kg
Maximum working load (lb)11000 lb
Breaking load (lb)22000 lb
Breaking load (kg)9980 kg