RF51140 - Ronstan Series 50 All Purpose Block - Single Stand Up

Series 50 All Purpose Block - Single Stand Up

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
• Mount with 2 x 5mm (3/6") fasteners (not supplied)

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. Quick adjusting cleat arms require no tools to adjust and fix securely in position. Becket pin is removable so line can be spliced prior to fitting.

Applications:

• Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)
• S60 - on boats up to 12m (40ft)
• Typically used in direct 4:1 purchase systems such as mainsheets and boom vangs
• On larger boats they are used for fine-tune mainsheet tackles, outhauls, cunninghams, checkstays, genoa lead pullers and traveller controls.

Materials:

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

The Ronstan Series 50 All Purpose Block - Single Stand Up, part number RF51140, is designed for marine applications requiring reliable line management. This block features a self-lubricating Acetal polymer sheave that runs on polished stainless steel races, engineered for low friction and durability under both dynamic and high static loads. Its construction includes a Grade 316 stainless steel load strap and impact/UV resistant, fiber-reinforced Nylon cheeks, contributing to a long service life and reduced maintenance.

This unit is suitable for mainsheet and halyard applications, vang, and spinnaker control lines on boats up to 10 meters (33 feet). For larger vessels up to 12 meters (40 feet), it can be integrated into fine-tune mainsheet tackles, outhauls, cunninghams, checkstays, genoa lead pullers, and traveller controls. The Captive Lock universal head can be set to swivel or fixed in one of two planes, providing flexibility in rigging. It is mounted with two 5mm (3/16") fasteners, which are not supplied.