Harken 57mm Fixed Mastbase Block (1988)

Harken 57mm Fixed Mastbase Block

Harken
SKU:
HK1988
|
UPC:
97653015185
$506.19
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Description

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

Part no. 1988:  57mm Aluminum Mastbase Block

Specifications

  • 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
  • Number of fasteners 3
  • 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
  • Breaking load (kg) 2273 kg

 

Resources/References