RF51510 - Ronstan Series 50 All Purpose Block - Fiddle - Becket

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 Block - Fiddle - Becket (part number RF51510) is designed for marine applications requiring reliable line management. This block features a self-lubricating Acetal polymer sheave, engineered for low friction and durability under both dynamic and high static loads. Its construction includes a Grade 316 stainless steel load strap and fiber-reinforced Nylon cheeks, providing resistance to impact and UV exposure for extended service life. The block is equipped with a Captive Lock universal head, offering flexibility to fix in two planes or swivel freely, and a slotted pin shackle to prevent line fouling. A snap-fit removable becket pin simplifies line splicing and is secured without additional tools. This product is suitable for sheets, halyards, and control line applications on boats up to 10m (33ft), and up to 12m (40ft) for S60 applications. It addresses the need for robust, low-maintenance hardware in mainsheet, halyard, vang, and spinnaker control systems.