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

The Wichard Self-Locking Bow Shackle — 8mm diameter (5/16") — is a marine-grade stainless steel fastening solution engineered for applications demanding absolute security against vibration-induced loosening. Forged from 316L stainless steel, this self-locking bow shackle features a pin secured within precision-machined indentations that eliminate the risk of unintended disengagement during dynamic loading or continuous movement. The design carries CE marking certification, confirming compliance with industrial safety standards.

316L stainless steel construction delivers superior corrosion resistance in saltwater and harsh environmental conditions, making this shackle ideal for marine rigging, offshore equipment securing, and tactical load-bearing systems exposed to spray or immersion. The self-locking pin mechanism operates through contact with indentations on the shackle body — once seated, the pin cannot migrate laterally due to vibration, impact, or operational shock. Outstanding working and breaking loads are documented for each unit via batch numbering, enabling traceability and compliance verification for critical applications. The 8mm diameter accommodates standard rigging hardware and slings without requiring custom adapters.

This shackle is specified for industrial lifting operations, vessel mooring systems, cargo securing, and field equipment attachment where traditional pins or bolts would loosen under repetitive stress. Operators and technicians managing high-consequence rigging applications — including maritime recovery, tactical transport, and heavy equipment staging — depend on self-locking hardware to eliminate regular re-torquing maintenance and the associated safety risks. The compact footprint (2 x 1 x 6 inches) and lightweight profile (0.15 lbs) allow integration into existing rigging without significant weight penalties.

Wichard Marine is recognized for producing high-specification stainless steel fasteners and rigging hardware engineered to withstand sustained tensile and shear loads in demanding environments. The self-locking bow shackle represents a engineering approach preferred over slotted pins or safety wire, which require periodic inspection and replacement. For applications where gear failure is not an option — recovery operations, load-critical rigging, or extended deployments — certified self-locking hardware provides verifiable security without additional maintenance intervention.