Ronstan RF191 Halyard Lock – Stainless Steel Vee Jammer for Halyards

The Ronstan RF191 Halyard Lock is a compact and reliable solution for securing wire halyards at a set length, commonly used on dinghies and small keelboats. Constructed from Grade 316 stainless steel, this vee jammer ensures exceptional corrosion resistance and durability in marine environments.

Designed to lock halyards off on a Talurit or Nico press swage, the RF191 allows for precise tensioning of wire halyards. Typically, a lightweight synthetic rope tail is used to hoist the sail, with a wire strop between the top of the sail and the RF191 taking the load once fully hoisted. A copper ferrule on the wire, swaged in the correct spot, is pulled down slightly beyond the RF191, then eased up the v-shaped groove until the ferrule is locked into place.

Key Features:

• Material: Grade 316 stainless steel

• Fastener Hole Diameter: 5 mm

• Fastener Hole Spacing: 35.9 mm

• Overall Dimensions: 48.4 mm (length) x 14.3 mm (width)

• Weight: 5 g

Ideal for terminating wire rigging, the RF191 provides a secure and efficient method for halyard management, enhancing sail performance and safety.