My Account
Shopping Cart

Ronstan RF35101 Series 30 Orbit Block Single Lashing Head

Manufacturer

Ronstan

<h3>About Ronstan – A Legacy Built on the Water</h3><p>Few names in the sailing world carry as much weight as Ronstan. <strong>Founded in 1953</strong> by Ron Allat and Stan Lenepveu, the company began as a small boatbuilding operation in Highett, a suburb of Melbourne, Australia. What started as handcrafting custom yacht fittings for fellow sailors at the nearby Black Rock Yacht Club steadily grew into one of the most respected sailboat hardware manufacturers on the planet. The brand name itself is a nod to its founders — Ron and Stan — whose passion for sailing and precision craftsmanship shaped the company's DNA from day one.</p><p>Today, <strong>Ronstan International</strong> is a globally recognised manufacturer and supplier of sailboat hardware, rigging components, winches, sailing gear, and accessories, with its head office remaining in Braeside, Victoria, Australia. The company has established manufacturing facilities in Australia, Denmark, and Indonesia, along with sales offices in the United States, and distributes products to sailors in over 40 countries around the world. In November 2023, Ronstan joined <strong>Groupe Wichard</strong>, aligning with an industry leader whose portfolio spans more than ten world-renowned brands in the sailing and safety markets — a move that further strengthens Ronstan's global reach and product offering.</p><h3>Engineered for Every Sailor, Proven at the Highest Levels</h3><p>Ronstan's reputation spans the full spectrum of sailing — from first-time dinghy sailors to elite competitors at the America's Cup and Olympic Games. The brand serves as the official supplier to the Australian Sailing Team, and Ronstan hardware has appeared aboard medal-winning boats across multiple Olympic campaigns. That pedigree at the pinnacle of racing directly fuels the innovation available to everyday sailors: the demanding performance requirements of top-tier competition have driven many of the technical breakthroughs found throughout Ronstan's broader product range.</p><p>The company's catalog encompasses well over 2,000 products, including pulley blocks, traveller systems, furlers, rope cleats, stainless steel fittings, shackles, snap shackles, and winches. Whether you're outfitting a small racing dinghy, a family cruiser, or an offshore race yacht, Ronstan offers hardware designed and tested to perform in real-world conditions. Their in-house capabilities span design, engineering, precision injection moulding, CNC machining, metal pressing, and assembly — all of which contribute to the consistent quality sailors have come to expect from the brand.</p><h3>Top Ronstan Product Categories</h3><p>Among Ronstan's most popular product lines are their <a href="/11561-ronstan-tiller-extensions-accessories-202641">Tiller Extensions &amp; Accessories</a>, which encompass both their renowned carbon fibre and alloy tiller extension ranges. Whether you need a lightweight, rigid fixed-length stick or a telescopic option for adjustable reach, Ronstan's tiller extensions are engineered for decisive helm response and positive grip in all conditions. Complementing these are Ronstan's <a href="/11561-ronstan-tiller-extensions-accessories-201068">Tiller Extension Accessories</a> — including universal joints, retaining clips, and end knobs — that allow sailors to fine-tune their setup or replace worn components with ease.</p><p>Ronstan also produces a well-regarded line of <a href="/11561-ronstan-fairleads-201944">Fairleads</a>, designed to guide lines smoothly across a boat's deck. Available in UV-stabilised nylon and with optional stainless steel liners for added strength and longevity, these practical fittings are a staple of both dinghy and keelboat rigging setups worldwide.</p><h3>Why Choose Ronstan?</h3><ul><li><strong>70+ years of marine hardware expertise</strong> rooted in Australian sailing culture</li><li>Products trusted by Olympic sailors, offshore racers, and cruising sailors alike</li><li>Over 2,000 products covering everything from small dinghy fittings to superyacht systems</li><li>Advanced manufacturing across three international production facilities</li><li>Part of Groupe Wichard, adding complementary product depth and global support</li></ul>

Part Number

RF35101
06/21/2036 6:37 AM
Sale Price

$13.28

Out of Stock

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Ronstan RF35101 is a lightweight, high-strength 30mm single block designed for modern rigging systems using high-tech lines. This versatile workhorse excels in applications including spinnaker sheets, barber haulers, 2:1 jib sheet systems, downhauls, and general control lines on dinghies and small keelboats.

Engineered for Maximum Strength-to-Weight Ratio:

Through advanced computer modeling, Ronstan replaced heavy metal components with engineered glass fiber reinforced nylon cheeks and head, achieving the highest strength-to-weight ratio in its class without compromising durability. The unique design accepts high-tech lashing (4mm), eliminating the need for heavy shackle pin posts and metal load frames. The hollow bearing at the sheave's center doubles as a becket, further reducing weight while adding versatility.

Advanced Two-Stage Bearing System:

  • High-compression grade acetal orbital ball bearings migrate to loaded areas of the sheave for efficient handling of light to moderate loads
  • Full-contact 316 stainless steel center bearing shoulders larger static loads
  • UV-resistant acetal sheave compatible with both conventional double-braid and high-tech 12-strand lines
  • Smooth, efficient operation throughout the entire load range

Key Features:

  • 30mm sheave diameter for 5/16" (8mm) line
  • Lashing head design accepts 4mm lashing line
  • Glass fiber reinforced nylon construction
  • Compact footprint and low profile for tight installations
  • Highest working loads in class
  • Hollow becket reduces weight and increases functionality

Ideal Applications:

  • Spinnaker sheets and barber haulers
  • 2:1 jib sheet systems
  • Cascade system boom vangs
  • Dinghy and small keelboat control lines
  • Downhauls and other line control systems

The RF35101 delivers professional-grade performance in a compact, lightweight package—perfect for sailors who demand efficiency and reliability from their rigging hardware.

Products specifications

Type

Single

Diameter

5/16 Inch or 8 mm

Mount Type

Rope/Webbing

Becket

No Becket

Direction

Any

Integral Cleat

No Integral Cleat

Ratchet

Non Ratcheting

Safe Working Load

661 Pounds

Sheave Diameter

1 3/16 Inches or 30 mm

So far, so good. More after receipt of product and installation. As it turned out, I ordered the wrong window kit, which is completely my fault, so I will have to pay return shipping and there will be a restock fee. Customer service dealt with my issue

I will continue to buy from you if all is good

Good prices and easy to order.

Convienient

Easy

GREAT PRICES

Reasonable shipping, quick checkout with amazon.

exellent

best price i found online

good so far

Fast, easy

Went well. Had to re enter everything because I am having it shipped to where I am working instead of my home. But, for security, I understand that. So, good experience.

Excellent.

Good prices

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy