The Ronstan RF135 Boom Hanger (4 Point Fixing) is a heavy-duty marine fitting designed for securely attaching blocks, mainsheet systems, and rigging hardware to your boom. With its four-point mounting design, it distributes load evenly across the boom, improving strength and reliability under load.

Manufactured from marine-grade 316 stainless steel, the RF135 offers exceptional corrosion resistance and durability in New Zealand’s harsh saltwater conditions. Its slotted attachment hole allows the shackle body to pass through easily, enabling flexible rigging setups and simplifying installation.

Designed for versatility, this boom hanger can be slightly formed to suit different boom shapes, making it suitable for a wide range of vessels including dinghies, catamarans, and small keelboats.

Key Features

• 4-point fixing design for superior load distribution
• 316 stainless steel construction for corrosion resistance
• Slotted attachment hole for easy shackle fitting
• 8 x 5mm fixing holes for secure mounting
• Can be shaped slightly to suit different boom profiles
• Ideal for mainsheet and rigging attachment systems
• Trusted Ronstan marine hardware quality

Specifications

• Length: approx. 75–78mm
• Width: approx. 74–75mm
• Fixing Holes: 8 x 5mm (3/16") diameter
• Material: 316 Stainless Steel
• Weight: approx. 35g
• Type: Boom hanger (4-point fixing)
• Application: Mainsheet and boom-mounted rigging systems

Why Choose the Ronstan RF135?  

For New Zealand sailors, strength and reliability are critical when mounting hardware to the boom. The RF135 offers a much stronger alternative to strip hangers, thanks to its multi-point fixing design that spreads load and reduces stress on the boom.

It’s ideal for higher-load applications, making it a popular choice for mainsheet systems and performance setups on dinghies and small keelboats operating in NZ coastal conditions.