Harken Long Shackle
Harken Long Shackles belong to the Forged Stainless Steel Shackle group. Stainless steel shackles are used on Harken blocks and available separately. The breaking strength of Harken Long Shackles are derived from tests that supported 80% of the length of the screw pin that is unsupported, which is similar to the area of a post in a block. Safe working loads are no more than half the minimum breaking strength.