Brand: Ronstan
Ronstan Series 50 All Purpose Single Stand-Up Block RF51140
Ronstan Series 50 All Purpose Single Stand-Up Block RF51140
6 available
About this product
The Ronstan Series 50 All Purpose Single Stand-Up Block is built for mainsheet, halyard, vang, and control-line applications on cruising and racing boats. Its Captive Lock universal head can be fixed in either of two planes or left free to swivel.
- Self-lubricating Acetal polymer sheave runs on polished stainless steel races.
- Slotted pin shackle helps prevent fouled lines.
- Quick-adjusting cleat arms adjust without tools and lock securely in position.
- Mounts with two 5 mm fasteners, not supplied.
- Grade 316 stainless steel load strap and impact- and UV-resistant, fiber-reinforced Nylon cheeks.
- Applications include mainsheets and halyards, vang and spinnaker control lines on boats to 10 m, and fine-tune mainsheet tackles, outhauls, cunningham, checkstays, genoa lead pullers, and traveller controls on larger boats.
- Typically used in direct 4:1 purchase systems, such as mainsheets and boom vangs.
- Secure checkout
- 21-day return requests
- Free standard shipping $100+
Product facts
- CT SKU
- CT-113963
- Model / MPN
- RF51140
- UPC / GTIN
- 9316800334599
- Package dimensions (H × W × L)
- 1" X 3" X 5"
- Package weight
- 0.28 lb
Specifications
- Mounting Fastener Diameter
- 5 mm
Shipping & returns
Shipping & returns
Request an eligible return within 21 calendar days after delivery. Every physical return requires written approval and an RMA number and must be shipped within five business days after the RMA is issued. The customer pays return shipping for an ordinary return. Tug & Tow provides prepaid return shipping for a verified damaged, defective, short, or incorrect shipment. We do not charge a restocking fee. See Shipping & Returns for eligibility, exclusions, and details.
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.
Need help choosing?
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.
