Harken 51mm Single High-Strength Block. Used in good working order

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Harken's Lightweight, low-friction blocks with high-load composite bearings carry wire halyards and control line cascades. Side-load balls reduce friction from twists or unfair leads on 304-311. 300-303 has thrust washers. Blocks open to allow passage of swaged wire. Hard Lube-anodized sheave for strength and corrosion resistance. Cheek blocks include fasteners.

Key Features

Impregnated Hardkote anodized aluminum bearings

Side-load carbon-black Delrin®

washers

Use for wire halyards, vangs, control lines

Polished stainless steel strap type fixed shackle

Sheave Diameter: 2" (51 mm)

Max. Wire Diameter: 3/16" (5 mm)

Max. Working Load (MWL): 2000 lb. (907 kg)

Breaking Load: 4000 lb. (1814 kg)

Weight: 5.25 oz. (149 g)

Harken, Lewmar, Wichard, Schaefer, Garhauer. Spinlock