Harken 1988 57mm Fixed Mastbase Halyard Lead Block
HARKEN 1988
Mast-Base Halyard Lead Blocks
Low-profile, mast-base halyard lead blocks are lightweight and can be grouped in a small area at the mast base. Flared cheeks prevent chafe on the halyards.
High-load bearing system has PTFE-composite bushing and side-load balls. Hardkote-anodized aluminum sheave for additional strength.
Mast-Base Halyard Lead Blocks
Low-profile, mast-base halyard lead blocks are lightweight and can be grouped in a small area at the mast base. Flared cheeks prevent chafe on the halyards.
High-load bearing system has PTFE-composite bushing and side-load balls. Hardkote-anodized aluminum sheave for additional strength.
Mfg No. | Description | Sheave Diameter |
Dimensions (W x L x H) |
Max Line Diameter |
Max Working Load |
Breaking Load |
Fasteners | Weight |
1988 | Halyard lead block / fixed | 2-1/4" (57mm) |
1-3/8" x 3-13/16" x 2-7/8" (35 x 81 x 73mm) |
3/8" (10mm) |
2,500 Lbs (1,136kg) |
5,000 Lbs (2,273kg) |
1/4" (6mm) RH |
6.2 oz. (175g) |
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Harken 1988 57mm Fixed Mastbase Halyard Lead Block
Sale price$236.95
Regular price$269.25