Ronstan Series 50 All Purpose Fiddle Block with Becket - Heavy-Duty Marine Hardware

Series 50 All Purpose Block - Fiddle - Becket

Features:

• Exceptionally high working loads
• Low maintenance, long service life
• Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
• Captive Lock universal head
• Slotted pin shackle eliminates fouled lines
• Snap fit removable becket pin
• Spare Parts - RF51010 Replacement Becket Pin, RF150 Shackle

All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Captive Lock universal head can be fixed in either of two planes, or free to swivel as required. Becket pin is removable so line can be spliced prior to fitting and is ingeniously locked into position without the use of a clevis pin, split ring or tools

Applications:

• Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)
• S60 - on boats up to 12m (40ft)
• Ideal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems.

Materials:

• Grade 316 stainless steel load strap
• Impact and UV resistant, fiber reinforced Nylon cheeks

The Ronstan Series 50 All Purpose Fiddle Block with Becket is a versatile and durable solution designed for demanding sailing applications. Featuring a self-lubricating Acetal polymer sheave that runs smoothly on polished stainless steel races, this block is engineered to perform reliably under both dynamic and static loads. Its construction ensures a long service life with minimal maintenance, making it ideal for sheets, halyards, and control line systems on boats up to 33 feet. The low-friction sheaves and robust materials provide excellent performance in a variety of sailing scenarios, whether racing or cruising.
The captive Lock universal head offers flexibility, allowing the block to be fixed in two planes or freely swivel as needed. The removable becket pin simplifies line splicing and installation, locking securely into place without tools or additional hardware. The slotted pin shackle prevents line fouling, ensuring smooth operation during critical maneuvers. Crafted from Grade 316 stainless steel and impact-resistant, fiber-reinforced Nylon cheeks, this block is built to withstand harsh marine environments and UV exposure, ensuring durability over time.
Designed for a range of applications including mainsheets, halyards, vang, spinnaker controls, and fine-tuning tackle systems, the Ronstan Series 50 is suitable for boats up to 33 feet and even up to 40 feet when using the S60 variant. Its high working loads and low maintenance requirements make it a reliable choice for sailors seeking performance and longevity. Spare parts such as the RF51010 Replacement Becket Pin and RF150 Shackle are available, facilitating easy maintenance and extended service life. Whether outfitting a racing yacht or a cruising sailboat, this all-purpose block offers exceptional value and dependable operation in demanding marine conditions.

Features:

• Exceptionally high working loads for demanding sailing conditions

• Low maintenance, long service life thanks to durable materials

• Self-lubricating Acetal polymer sheave for smooth operation and durability

• Captive Lock universal head for versatile positioning and secure fixing

• Slotted pin shackle prevents line fouling during operation

• Snap fit removable becket pin for easy line splicing and installation

• Constructed with Grade 316 stainless steel load strap and impact-resistant nylon cheeks

• Suitable for mainsheets, halyards, vang, spinnaker controls, and fine-tune systems