Ronstan RF51300 Series 50 All Purpose Triple Block for Sailboat Sheets, Halyards and Control Lines

Series 50 All PurposeBlock - Triple

Features:

• Exceptionally high working loads
• Low maintenance, long service life
• Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
• Slotted pin shackle eliminates fouled lines
• Lockable swiveling head post
• Snap fit removable becket pin

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.Head can be locked at 0 or 90 by engaging the grub screw in either the 0 or 90 degree position.

Applications:

• Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)
• S60 - on boats up to 12m (40ft)

Materials:

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

The Ronstan RF51300 Series 50 All Purpose Triple Block is a durable, versatile sailing block designed for cruising and racing applications. Its triple-sheave configuration supports mainsheets, halyards, vangs and spinnaker control lines on boats up to 33 feet, while the Series 50 design also suits demanding dynamic and high static load conditions. With low friction, durable construction and flexible installation features, this Ronstan triple block provides a practical solution for a wide range of sailboat control systems.

Self-lubricating Acetal polymer sheaves run on polished stainless steel races to help reduce friction and support a long service life with low maintenance. The impact- and UV-resistant fiber-reinforced Nylon cheeks are paired with a Grade 316 stainless steel load strap for dependable construction. A slotted pin shackle helps prevent fouled lines, while the lockable swiveling head post can be secured at 0 or 90 degrees by engaging the grub screw in the selected position.

The snap-fit removable becket pin makes servicing and line arrangement more convenient. This all purpose block is intended for mainsheet and halyard applications, as well as vang and spinnaker control lines. Series 50 blocks are suitable for boats up to 33 feet, and the manufacturer also identifies S60 applications for boats up to 40 feet. Whether outfitting a cruising sailboat or preparing a racing control system, the Ronstan RF51300 delivers versatile performance in a compact, serviceable design.

Key Features:

• Feature: Triple-sheave all purpose block for sheets, halyards and control lines
• Feature: Self-lubricating Acetal polymer sheaves help reduce friction and support durability
• Feature: Polished stainless steel races support dynamic and high static load applications
• Feature: Slotted pin shackle helps eliminate fouled lines
• Feature: Lockable swiveling head post secures at 0 or 90 degrees
• Feature: Snap-fit removable becket pin simplifies line arrangement and service

Product Details:

• Brand: Ronstan
• Model: RF51300
• Product type: Series 50 All Purpose Triple Block
• Load strap: Grade 316 stainless steel
• Cheeks: Impact- and UV-resistant fiber-reinforced Nylon
• Sheaves: Self-lubricating Acetal polymer
• Intended use: Mainsheet, halyard, vang and spinnaker control line applications
• Recommended boat size: Up to 33 feet for Series 50 applications

Choose the Ronstan RF51300 Series 50 Triple Block for a reliable, versatile solution to common sailboat rigging and control-line needs.

SEO Meta Description:
Shop the Ronstan RF51300 Series 50 Triple Block for sailboat sheets, halyards and control lines, with durable sheaves and a lockable swivel head.

Features:

• Triple-sheave all purpose block for sheets, halyards and control lines

• Self-lubricating Acetal polymer sheaves help reduce friction and support durability

• Polished stainless steel races support dynamic and high static load applications

• Slotted pin shackle helps eliminate fouled lines

• Lockable swiveling head post secures at 0 or 90 degrees

• Snap-fit removable becket pin simplifies line arrangement and service