Brand: Ronstan
Ronstan Nylatron Sheave Box - Single Upright Lead Block (RF453)
Ronstan Nylatron Sheave Box - Single Upright Lead Block (RF453)
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The Ronstan Nylatron Sheave Box is a low-profile, single upright lead block designed for leading halyards and sail control lines to cleats or jammers. Its external tabs can be custom-formed to fit specific spar profiles before installation.
- Materials: Durable Nylatron sheave with a grade 316 stainless steel load housing.
- Sheave Diameter: 22mm (7/8 in.)
- Max Rope and Cable Diameter: 3mm (1/8 in.)
- Fastener Diameter: 5mm (3/16 in.)
- Maximum Working Load (M.W.L.): 160kg (350 lbs.)
- Breaking Load (B.L.): 350kg (700 lbs.)
- Weight: 30g (1.1 oz.)
Typical applications include use in dinghy spars for control lines such as outhauls. When mounted in an inverted position, this unit functions as an effective upright lead.
Product facts
- CT SKU
- CT-114615
- Model / MPN
- RF453
- UPC / GTIN
- 9316800000425
- Package dimensions
- 1" X 1" X 1"
- Package weight
- 0.04 lb
Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.
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Shipping & returns
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Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
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Need help choosing?
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