Wichard Self-Locking Allen Head Pin Bow Shackle - 8mm Diameter - 5/16"

The Wichard Self-Locking Allen Head Pin Bow Shackle in 8mm diameter (5/16") is purpose-built for marine applications where secure anchor connections are non-negotiable. After years on the water, any serious angler or boater knows that equipment failure isn't an option—your safety and your vessel's integrity depend on hardware that won't slip, loosen, or corrode. This shackle is engineered specifically to eliminate the guesswork, providing a permanently locked connection that performs reliably whether you're anchoring in rough seas or securing rigging in challenging conditions.

Forged from marine-grade 316L stainless steel, this self-locking shackle features an Allen head pin that twists into a specially indented bow, creating a mechanical lock that resists vibration and prevents accidental loosening over time. The twisted-pin design and precise indentations work together to distribute load evenly while maintaining constant tension, eliminating the need for secondary locking mechanisms like safety wire or cotter pins. The 8mm diameter accommodates standard 5/16" deck hardware and anchor systems, making it a direct fit for most modern marine applications without modification or adapters.

Cruising sailors, commercial fishermen, and yacht owners rely on Wichard hardware because it performs in salt spray, extreme weather, and high-vibration environments where ordinary fasteners fail. This shackle works seamlessly with anchor rodes, bridle systems, and deck-mounted hardware on vessels of all sizes. Installation is straightforward—simply twist the Allen head pin into the bow indentation until locked, and your connection is secured without additional tools or maintenance. For anyone who trusts their life to equipment every time they leave the dock, the Wichard Self-Locking Allen Head Pin Bow Shackle delivers the dependability that comes from decades of marine engineering expertise.