Ronstan RF630 5/16" Pin Twisted Shackle – 316 Stainless Marine Fitting

The Ronstan RF630 Twisted Shackle with a 5/16" (7.9mm) pin is a heavy-duty marine-grade fitting designed to handle angled loads where standard shackles can't align. Built from 316 stainless steel, it offers excellent corrosion resistance, strength, and longevity—ideal for marine and sailing environments.

The twisted body design enables a 90° connection between attachment points, making it ideal for deck fittings, hardware misalignments, or tight rigging systems on yachts, keelboats, and offshore vessels. A high-load-rated and space-efficient solution for serious sailors.

Specifications:

• Pin Diameter: 7.9mm (5/16")

• Internal Length: 37.0mm

• Internal Width: 14.0mm

• Material: 316 stainless steel

• Breaking Load: 1600kg

• Working Load Limit: 800kg

• Design: Twisted for 90° alignment in rigging systems

• Applications: Sailing rigging, deck hardware, angled marine connections

Built for tough marine use in NZ conditions, the RF630 delivers performance, alignment flexibility, and dependable strength. Available now at Barton Marine NZ, official supplier of Ronstan rigging hardware.