Wichard Self-Locking Long D Shackle - 10mm Diameter - 13/32"

The Wichard Self-Locking Long D Shackle in 10mm diameter is a marine-grade fastening solution engineered for serious boaters, anglers, and sailors who demand reliability under constant motion and stress. This shackle serves as the critical link between deck hardware, anchor systems, and rigging where vibration-induced loosening can spell disaster on the water. Whether you're securing an anchor bridle, connecting tow lines, or assembling a complex rigging system, this self-locking design eliminates the anxiety of hardware gradually working free during rough seas or extended cruising.

Forged from grade 316L stainless steel, the Wichard Self-Locking Long D Shackle resists corrosion in saltwater environments where standard hardware fails within seasons. The self-locking mechanism works by positioning the pin into one of several precision indentations molded into the shackle body, creating mechanical resistance that prevents rotation from vibration, shock loads, or wave action. Unlike traditional shackles that rely solely on friction or external lock washers, this design offers a passive safety feature requiring no additional components or tools to maintain security over months of continuous use.

Experienced anglers and cruising sailors benefit most from this investment in hardware integrity, particularly when working with multi-point anchor systems, boom gallows, or standing rigging that experiences constant micro-movement. The 10mm diameter and 13/32-inch pin size make it compatible with standard marine rigging hardware and deck fittings found on vessels ranging from center console fishing boats to offshore cruisers. Installation requires no special tools—simply align the pin with your chosen indentation and secure, knowing that vibration will not gradually loosen your connection under any normal boating condition.