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Harken HK421 16 mm Through-Deck Block
The Harken HK421 16 mm Through-Deck Block is a small boat block engineered for high-tech dinghies, providing exceptional strength and durability for a wide range of control lines. Equipped with stainless steel balls in a grooved race, this block offers an excellent strength-to-weight ratio, making it a reliable choice for demanding conditions.
With a maximum working load of 113 kg (250 lb) and a breaking load of 544 kg (1200 lb), it ensures dependable performance in various rigging setups, including dinghy control lines, leech lines, downhauls, travel controls, spinnaker pole trip lines, out-hauls, cunninghams, and pram halyards.
The hardened stainless steel inner race enhances its durability, ensuring long-lasting use even under heavy loads and frequent handling. The sheave diameter is 16 mm (5/8"), with a cutout size of 11 x 35 mm (7/16" x 1 3/8"), offering compatibility with lines up to 5 mm (7/32") in diameter.
Despite its robust construction, the block weighs only 18 g (0.63 oz), making it a lightweight and efficient solution for your rigging needs.
Product Specifications
- Sheave Diameter: 16 mm (5/8")
- Length: 60 mm (2 3/8")
- Weight: 18 g (0.63 oz)
- Maximum Line Diameter: 5 mm (7/32")
- Maximum Working Load: 113 kg (250 lb)
- Breaking Load: 544 kg (1200 lb)
Specifications:Sheave Ø, mm Length, mm Weight, gr Max Ø, mm Max Working Load, kg Breaking Load, kg 16 60 18 5 113 544 -