Wire High-Strength Blocks

Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes.

High-load composite bearings carry axial loads. Hard Lube-anodized with PTFE impregnation sheave for strength and corrosion resistance.

25 mm (1.00 in) wire blocks use low-friction thrust washers. 38 mm (1.50 in) and 51 mm (2.00 in) wire blocks feature sideload balls between the sheave and the sideplate to minimize friction from unfair leads.

Specifications:

• Sheave Ø 25 mm | 1 in
• Weight 28 g | 1 oz
• Shackle pin Ø 5 mm | 3/16 in
• Maximum wire Ø 2 mm | 3/32 in
• Maximum line Ø 4 mm | 5/32 in
• Maximum working load 454 kg | 1000 lb
• Breaking load 907 kg | 2000 lb

Harken 300