38mm Thru-Deck High-Strength Block

Harken 38mm Thru-Deck High-Strength Block allows lines through the deck and bulkhead.

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
• Sheave Diameter: 1 1/2" (38 mm) 
• Max. Wire Diameter: 1/8" (3 mm)  
• Max. Working Load (MWL): 1500 lb. (680 kg)  
• Breaking Load: 3000 lb. (1361 kg)   
• Weight: 3.25 oz. (92 g)