Skip to product information
1 of 1

Brand: Ronstan

Ronstan RF103 45mm Wire Block with Removable Nylatron Sheave

Ronstan RF103 45mm Wire Block with Removable Nylatron Sheave

Regular price $49.34
Regular price Sale price $49.34
Sale Sold out
Shipping calculated at checkout.

4 available

Quantity

This Ronstan wire block is engineered with a narrow sheave and groove profile to accommodate wire rope for sailing applications including halyards, vangs, and backstays. It features a removable Nylatron sheave, allowing for easy installation without the need to cut wire terminations, and flared cheeks to help minimize chafing.

Key Features and Specifications:

  • Sheave diameter: 45mm (1-3/4 in.)
  • Maximum cable diameter: 6mm (1/4 in.)
  • Maximum Working Load (M.W.L): 850kg (1,870 lbs.)
  • Breaking Load (B.L.): 1,700kg (3,740 lbs.)
  • Weight: 88g (3.1 oz.)
  • Materials: Grade 316 stainless steel cheeks with Nylatron sheave
  • Tubular rivet head design

Product facts

CT SKU
CT-117270
UPC / GTIN
9316800067466
Package weight
0.2 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.

Shipping & returns

Shipping methods, delivery estimates, and final costs appear at checkout before payment. Some bulky, supplier-shipped, or special-handling items may ship separately. See Shipping & Returns for return windows and eligibility.

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.

Need help choosing?

Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.