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HARKEN Mast Base Lead Blocks

For leading lines aft and over cabin tops or coamings. Narrow sheave carriers permit mounting several in a small area. Low lead profile keeps lines close to the deck. Standard block features a stainless shell, Delrin sheaves and roller bearings. High-load blocks have aluminum sheaves with ball bearings and Teflon-composite bushings designed to carry the high static loads of halyards.

  • Sheave: 1-3/4"
  • Ball Bearings: Standard: Delrin; Hi-Load: carbon-black bushings
  • Sheave Size: 1986: 1-3/4" (44mm); 1988 & 3002: 2-1/4" (57mm)
  • Line Diameter: 3/8" max.
  • Cheek Material/Finish: Standard: Polished stainless; Hi-Load: anodized aluminum
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
Mast Base Lead Block, Standard, 1-3/4" Sheave Dia., 3/8" Line Dia., 750lb. SWL 367070 1986
In stock online.

$64.99

Mast Base Lead Block, Hi-Load, 2-1/4" Sheave Dia., 3/8" Line Dia., 2,500lb. SWL 286809 1988
In stock online.

$172.99

Mast Base Lead Block, Hi-Load Over-the-Top, 2-1/4" Sheave Dia., 3/8" Line Dia., 2,500lb. SWL 286841 3002
In stock online.

$172.99

Product Description

For leading lines aft and over cabin tops or coamings. Narrow sheave carriers permit mounting several in a small area. Low lead profile keeps lines close to the deck. Standard block features a stainless shell, Delrin sheaves and roller bearings. High-load blocks have aluminum sheaves with ball bearings and Teflon-composite bushings designed to carry the high static loads of halyards.

  • Sheave: 1-3/4"
  • Ball Bearings: Standard: Delrin; Hi-Load: carbon-black bushings
  • Sheave Size: 1986: 1-3/4" (44mm); 1988 & 3002: 2-1/4" (57mm)
  • Line Diameter: 3/8" max.
  • Cheek Material/Finish: Standard: Polished stainless; Hi-Load: anodized aluminum

Specs

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